ccna2 - rounting protocols and concepts

1Which routing protocol maintains a topology table separate from the routing table?IGRPRIPv1RIPv2*EIGRP

2

Refer to the exhibit. All routers are running RIPv1. The two networks 10.1.1.0/29 and 10.1.1.16/29 are unable to access eachother. What can be the cause of this problem?Because RIPv1 is a classless protocol, it does not support this access.*RIPv1 does not support discontiguous networks.RIPv1 does not support load balancing.RIPv1 does not support automatic summarization.

3Which two statements are correct about the split horizon with poison reverse method of routing loop prevention? (Choosetwo.)It is enabled by default on all Cisco IOS implementations.*It assigns a value that represents an infinite metric to the poisoned route.It sends back the poisoned route update to the same interface from where it was received.It instructs routers to hold all changes that might affect routes, for a specified period of time.*It limits the number of hops a packet can traverse through the network before it is discarded.

Holddown timers are used to prevent regular update messages from inappropriately reinstating a route that may have gone bad. The split horizon rule says that a router should not advertise a network through the interface from which the update came. Route poisoning is used to mark the route as unreachable in a routing update that is sent to other routers. The rule for split horizon with poison reverse states when sending updates out a specific interface, designate any networks that were learned on that interface as unreachable.

4What are two reasons for the occurrence of a routing loop? (Choose two.)slow convergence*incorrectly configured static routesroutes that are learned via two routing protocols*static and dynamic routing being used on the same routerlack of a default route on the router that connects to the Internet

The loop may be a result of: Incorrectly configured static routes Incorrectly configured route redistribution (redistribution is a process of handing the routing information from one routing protocol to another routing protocol and is discussed in CCNP-level courses) Inconsistent routing tables not being updated due to slow convergence in a changing network Incorrectly configured or installed discard routes

5All routers in a network are configured in a single OSPF area with the same priority value. No loopback interface has beenset on any of the routers. Which secondary value will the routers use to determine the router ID?The highest MAC address among the active interfaces of the network will be used.There will be no router ID until a loopback interface is configured.The highest IP address among the active FastEthernet interfaces that are running OSPF will be used.*The highest IP address among the active interfaces will be used.

Determining the Router ID The OSPF router ID is used to uniquely identify each router in the OSPF routing domain. A router ID is simply an IP address. Cisco routers derive the router ID based on three criteria and with the following precedence: 1. Use the IP address configured with the OSPF router-id command. 2. If the router-id is not configured, the router chooses highest IP address of any of its loopback interfaces. 3. If no loopback interfaces are configured, the router chooses highest active IP address of any of its physical interfaces.

6

Refer to the exhibit. Although R2 is configured correctly, host A is unable to access the Internet. What are two staticroutes that can be configured on R1, either of which would enable Internet connectivity for host A? (Choose two.)

ip route 0.0.0.0 0.0.0.0 Fa0/0*ip route 0.0.0.0 0.0.0.0 Fa0/1ip route 0.0.0.0 0.0.0.0 10.1.1.1*ip route 0.0.0.0 0.0.0.0 10.1.1.2ip route 209.165.202.0 255.255.255.0 10.1.1.1

7What is the function of the OSPF LSR packet?It is used to confirm the receipt of LSUs.It is used to establish and maintain adjacency with other OSPF routers.*It is used by the receiving routers to request more information about any entry in the DBD.It is used to check the database synchronization between routers

1. Hello - Hello packets are used to establish and maintain adjacency with other OSPF routers. 2. DBD - The Database Description (DBD) packet contains an abbreviated list of the sending router's link-state database and is used by receiving routers to check against the local link-state database. 3. LSR - Receiving routers can then request more information about any entry in the DBD by sending a Link-State Request (LSR). 4. LSU - Link-State Update (LSU) packets are used to reply to LSRs as well as to announce new information. LSUs contain seven different types of Link-State Advertisements (LSAs). LSUs and LSAs are briefly discussed in a later topic. 5. LSAck - When an LSU is received, the router sends a Link-State Acknowledgement (LSAck) to confirm receipt of the LSU.

8

Refer to the exhibit. A network administrator is accessing router R1 from the console port. Once the administrator isconnected to the router, which password should the administrator enter at the R1> prompt to access the privileged EXECmode?Cisco001Cisco123*Cisco789Cisco901

9Which two technologies can be used in distance vector routing protocols to prevent routing loops? (Choose two.)authenticationlink-state advertisements*hold-down timersSpanning Tree Protocol*split horizon


10

Refer to the exhibit. An administrator is adding a new subnet of 50 hosts to R3. Which subnet address should be used forthe new subnet that provides enough addresses while wasting a minimum of addresses?

192.168.1.0/24192.168.1.48 /28192.168.1.32/27*192.168.1.64/26

11*192.168.1.64/26

Refer to the exhibit. Host A is unable to access the Internet. What is the reason for this?

The IP address of host A is incorrect.The default gateway of host A is incorrect.*The Fa0/1 interfaces of the two routers are configured for different subnets.The subnet mask for the Fa0/0 interface of R1 is incorrect.

12A network administrator uses the RIP routing protocol to implement routing within an autonomous system. What are twocharacteristics of this protocol? (Choose two.)*It uses the Bellman-Ford algorithm to determine the best path.It displays an actual map of the network topology.It offers rapid convergence in large networks.*It periodically sends complete routing tables to all connected devices.It is beneficial in complex and hierarchically designed networks.

13

Refer to the exhibit. What is the meaning of the highlighted value 2?It is the administrative distance of the routing protocol.*It is the number of hops between R2 and the 192.168.8.0/24 network.It is the value used by the DUAL algorithm to determine the bandwidth for the link.It is the convergence time measured in seconds.

14

http://www.ccna4u.org/


Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choosetwo.)*10.0.0.0/864.100.0.0/16128.107.0.0/16172.16.40.0/24192.168.1.0/24*192.168.2.0/24

Ingat recursive lookup , ingat (via)^_^ 15

Refer to the exhibit. The 10.4.0.0 network fails. What mechanism prevents R2 from receiving false update informationregarding the 10.4.0.0 network?*split horizonhold-down timersroute poisoningtriggered updates


16Refer to the exhibit. The routers are properly configured using a dynamic routing protocol with default settings, and thenetwork is fully converged. Router A is forwarding data to router E. Which statement is true about the routing path?*If the network uses the RIP protocol, router A will determine that all paths have equal cost.If the network uses the RIP protocol, router A will update only the A-C-E path in its routing table.If the network uses the EIGRP routing protocol, router A will determine that path A-D-E has the lowest cost.If both RIP and EIGRP protocols are configured on router A, the router will use the route information that islearned by the RIP routing protocol.

17Refer to the exhibit. All routers are running the same routing protocol. Based on the exhibit and its displayed commands,which statement is true?The wildcard mask is incorrectly configured.A default route must be configured on every router.Routers B, C, and D have no access to the Internet.*The link to the ISP is not advertised by the routing protocol process.

18



Refer to the exhibit. A ping between host A and host B is successful, but pings from host A to operational hosts on theInternet fail. What is the reason for this problem?The FastEthernet interface of R1 is disabled.*One of the default routes is configured incorrectly.A routing protocol is not configured on both routers.The default gateway has not been configured on host A.

19

Refer to the exhibit. While trying to diagnose a routing problem in the network, the network administrator runs the debug iprip command. What can be determined from the output of this command?The router is broadcasting RIP updates.The router will be unable to ping 192.168.1.2.The router is directly connected to network 172.16.1.0 /24.*The router has two interfaces that participate in the RIP process.

20A router boots and enters setup mode. What is the reason for this?The IOS image is corrupt.Cisco IOS is missing from flash memory.*The configuration file is missing from NVRAM.The POST process has detected hardware failure.

21

Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.)

The route to network 172.16.0.0 has an AD of 156160.Network 192.168.0.16 can best be reached using FastEthernet0/0.*The AD of EIGRP routes has been manually changed to a value other than the default value.*Router1 is running both the EIGRP and OSPF routing process. Network 172.17.0.0 can only be reached using a default route. *No default route has been configured.

22

A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands willprevent RIP updates from being sent to Router A?A(config)# router ripA(config-router)# passive-interface S0/0B(config)# router ripB(config-router)# network 192.168.25.48B(config-router)# network 192.168.25.64A(config)# router ripA(config-router)# no network 192.168.25.32*B(config)# router rip B(config-router)# passive-interface S0/0 A(config)# no router rip

23

Refer to the exhibit. The show cdp neighbors command was run at R1. Which two facts about the newly detected device canbe determined from the output? (Choose two.)*ABCD is a router that is connected to R1.ABCD is a non-CISCO device that is connected to R1.*The device is connected at the Serial0/0/1 interface of R1.R1 is connected at the S0/0/1 interface of device ABCD.ABCD does not support switching capability.

24Which statement is true about the metrics used by routing protocols?*A metric is a value used by a particular routing protocol to compare paths to remote networks. A common metric is used by all routing protocols.The metric with the highest value is installed in the routing table.

The router may use only one parameter at a time to calculate the metric.

25Refer to the exhibit. What action will R2 take for a packet that is destined for 192.168.2.0?It will drop the packet.It will forward the packet via the S0/0/0 interface.It will forward the packet via the Fa0/0 interface.*It will forward the packet to R1.

26Which two router component and operation pair are correctly described? (Choose two.)DRAM - loads the bootstrapRAM - stores the operating systemFlash - executes diagnostics at bootup*NVRAM - stores the configuration fileROM - stores the backup configuration file*POST - runs diagnostics on hardware modules

27Which two statements are true about the EIGRP successor route? (Choose two.)It is saved in the topology table for use if the primary route fails.*It may be backed up by a feasible successor route. *It is used by EIGRP to forward traffic to the destination.It is flagged as active in the routing table.After the discovery process has occurred, the successor route is stored in the neighbor table.

28

Refer to the exhibit. Which two facts can be derived from this output? (Choose two.)*Three network devices are directly connected to Router2. *The serial interface between Router2 and Router3 is up.Router1 and Router3 are directly connected.Six devices are up and running on the network.Layer 3 functionality between routers is configured properly.

Ilustrasi gambarnya :

29In a lab test environment, a router has learned about network 172.16.1.0 through four different dynamic routing processes.Which route will be used to reach this network?*D 172.16.1.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Serial0/0/0O 172.16.1.0/24 [110/1012] via 192.168.200.1, 00:00:22, Serial0/0/0R 172.16.1.0/24 [120/1] via 192.168.200.1, 00:00:17, Serial0/0/0I 172.16.1.0/24 [100/1192] via 192.168.200.1, 00:00:09, Serial0/0/0

30Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through arouter? (Choose three.)*The router modifies the TTL field, decrementing it by one.The router changes the source IP to the IP of the exit interface.*The router maintains the same source and destination IP. *The router changes the source physical address to the physical address

of the exit interface. The router changes the destination IP to the IP of the exit interface.The router sends the packet out all other interfaces, besides the one it entered the router on.31

Refer to the exhibit. Both routers are using the RIPv2 routing protocol and static routes are undefined. R1 can ping192.168.2.1 and 10.1.1.2, but is unable to ping 192.168.4.1.

What is the reason for the ping failure?The serial interface between two routers is down.R2 is not forwarding the routing updates.*The 192.168.4.0 network is not included in the RIP configuration of R2. RIPv1 needs to be configured.

32

Refer to the exhibit. Two routers are unable to establish an adjacency. What is the possible cause for this?The two routers are connected on a multiaccess network.*The hello and dead intervals are different on the two routers. They have different OSPF router IDs.They have different process IDs.

33

Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfaces and are both running the EIGRProuting protocol. R1 and R2 can ping the directly connected serial interface of their neighbor, but they cannot form anEIGRP neighbor adjacency.

What action should be taken to solve this problem?Enable the serial interfaces of both routers.Configure EIGRP to send periodic updates.Configure the same hello interval between the routers.*Configure both routers with the same EIGRP process ID.

34

Refer to the exhibit. R1 and R2 are unable to establish an adjacency. What two configuration changes will correct theproblem? (Choose two.)Set a lower priority on R2.*Configure the routers in the same area.Set a lower cost on R2 compared to R1.Add a backup designated router to the network.*Match the hello and dead timers on both routers.

35

Refer to the exhibit. All routers are properly configured to use the EIGRP routing protocol with default settings, and thenetwork is fully converged. Which statement correctly describes the path that the traffic will use from the 10.1.1.0/24network to the 10.1.2.0/24 network?It will use the A-D path only.It will use the path A-D, and the paths A-C-D and A-B-D will be retained as the backup paths.It will use all the paths equally in a round-robin fashion.*The traffic will be load-balanced between A-B-D and A-C-D.

36

Refer to the exhibit. Which router is advertising subnet 172.16.1.32/28?Router1Router2Router3*Router4

37

Refer to the exhibit. The hosts that are connected to R2 are unable to ping the hosts that are connected to R1. How can thisproblem be resolved?Configure the router ID on both routers.

*Configure the R2 router interfaces for area 0.Configure a loopback interface on both routers.Configure the proper subnet masks on the router interfaces.

38

Refer to the exhibit. The network has three connected routers: R1, R2, and R3. The routes of all three routers aredisplayed. All routers are operational and pings are not blocked on this network.

Which ping will fail?from R1 to 172.16.1.1from R1 to 192.168.3.1from R2 to 192.168.1.1from R2 to 192.168.3.1

39Refer to the exhibit. Router R2 is configured properly and all interfaces are functional. Router R1 has been installedrecently. Host A is unable to ping host B.

Which procedure can resolve this problem?Configure a static route on R1 using the IP address of the serial interface on R1.Configure a default route on R1 with the exit interface Fa0/0 on R1.*Configure a static route on R1 using the IP address of S0/0/0 on R2.Configure a default route on R1 using the IP address of Fa0/0 on R2.

40Refer to the exhibit. To implement the RIPv2 protocol, the network administrator runs the commands as displayed. However,the show ip protocol command fails to display any output. How can the administrator solve the problem that is indicated bythe lack of output from this command?Include the default-information originate command.Include the no auto-summary command.*Specify the network for which RIP routing has to be enabled.Implement RIPv2 authentication in the network.

41

Refer to the exhibit. A router learns a route to the 192.168.6.0 network, as shown in the output of the show ip rip databasecommand. However, upon running the show ip route command, the network administrator sees that the router has installed a

different route to the 192.168.6.0 network learned via EIGRP. What could be the reason for the missing RIP route?*Compared to RIP, EIGRP has a lower administrative distance.Compared to EIGRP, RIP has a higher metric value for the route.Compared to RIP, the EIGRP route has fewer hops.Compared to RIP, EIGRP has a faster update timer.

42

Refer to the exhibit. A network administrator has configured R1 as shown, and all interfaces are functioning correctly. Aping from R1 to 172.16.1.1 fails. What could be the cause of this problem?The serial interface on R1 is configured incorrectly.*The default route is configured incorrectly.The default-information originate command must be issued on R1.Autosummarization must be disabled on R1.

43

Refer to the exhibit. A network administrator wants to reduce the size of the routing table of R1. Which partial routingtable entry in R1 represents the route summary for R2, without including any additional subnets?10.0.0.0/16 is subnetted, 1 subnets

D 10.5.0.0[90/205891] via 192.168.1.2, S0/0/010.0.0.0/24 is subnetted, 4 subnetsD 10.5.0.0[90/205198] via 192.168.1.2, S0/0/0*10.0.0.0/22 is subnetted, 1 subnets *D 10.5.0.0[90/205901] via 192.168.1.2, S0/0/010.0.0.0/8 is subnetted, 4 subnetsD 10.5.0.0[90/205001] via 192.168.1.2, S0/0/0

44Which two statements are true for link-state routing protocols? (Choose two.)*Routers that run a link-state protocol can establish a complete topology of the network. Routers in a multipoint network that run a link-state protocol can exchange routing tables.Routers use only hop count for routing decisions.*The shortest path first algorithm is used. Split horizon is used to avoid routing loops.

45Refer to the exhibit. Which two components are required to complete the configuration? (Choose two.)a crossover cablea DCE device*a DTE devicea modem*a V.35 cable

46Refer to the exhibit. The output of the show ip route command for router R1 is displayed. What action will the router takefor a packet that is destined for 192.168.1.5?*It will drop the packet.It will forward the packet to interface Serial0/0/0.It will determine the route for the packet through a routing protocol.It will forward the packet to the default gateway.

47Refer to the exhibit. A network administrator has run the show interface command. The output of this command isdisplayed. What is the first step that is required to make this interface operational?Switch the cable with a known working cable.*Issue the no shutdown command on the interface. Configure the interface as a loopback interface.Set the encapsulation for the interface.

48What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.)The routers must elect a designated router.*The routers must agree on the network type. *The routers must use the same dead interval.The routers must exchange link state requests.The routers must exchange database description packets.

49

Refer to the exhibit. All interfaces are addressed and functioning correctly. The network administrator runs the tracertcommand on host A. Which two facts could be responsible for the output of this command? (Choose two.)The gateway for Host A is missing or improperly configured.The gateway for Host B is missing or improperly configured.The entry for 192.168.1.0/24 is missing from the routing table of R1.*The entry for 192.168.1.0/24 is missing from the routing table of R2. *The entry for 192.168.2.0/24 is missing from the routing table of R1. The entry for 192.168.2.0/24 is missing from the routing table of R2.

50Refer to the exhibit. How many routes are ultimate routes?*3457

51Refer to the exhibit. Which summarization should R1 use to advertise its networks to R2?192.168.1.0/24192.168.0.0/24*192.168.0.0/22192.168.1.0/22

52How does route poisoning prevent routing loops?New routing updates are ignored until the network has converged.

*Failed routes are advertised with a metric of infinity. A route is marked as unavailable when its Time to Live is exceeded.The unreachable route is cleared from the routing table after the invalid timer expires.

53What are two functions of a router? (Choose two.)*It forwards data packets toward their destination. It forwards the packet to the destination if the TTL value is 0.It changes the destination IP address of data packets before forwarding them to an exit interface.It determines the best path based on the destination MAC address.*It acts as an intersection between multiple IP networks.

54Which two components are used to determine the router ID in the configuration of the OSPF routing process? (Choose two.)the IP address of the first FastEthernet interfacethe highest IP address of any logical interface*the highest IP address of any physical interface the default gateway IP address*the priority value of 1 on any physical interface

55

Refer to the exhibit. R2 is configured correctly. The network administrator has configured R1 as shown. Which two factsare true about the forwarding of route information by R1? (Choose two.)*R1 will forward the route information for subnet 192.168.100.0/30. *R1 will not forward route information for subnet 192.168.100.4/30. R1 will forward the route information with an administrative distance set to 50.R1 will forward the summarized route information for network 192.168.100.0/24.R1 will forward route information for subnet 10.10.10.0/30 out the serial interface.

56

Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.)*All routes are stable. Each route has one feasible successor.The serial interface between the two routers is down.The administrative distance of EIGRP has been set to 50.*The show ip eigrp topology command has been run on R1.

57A router has learned two equal cost paths to a remote network via the EIGRP and RIP protocols. Both protocols are usingtheir default configurations. Which path to the remote network will be installed in the routing table?*the path learned via EIGRP the path learned via RIPthe path with the highest metric value

both paths with load balancing

58

Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative distance values. Alldevices are properly configured and the destination network is advertised by both protocols.

Which path will be used to transmit the data packets from PC1 to PC2?*The packets will travel via R2-R1.The packets will travel via R2-R3.The traffic will be load-balanced between two paths via R2-R1 and via R2-R3.The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path.

59Which statement is true about the RIPv1 protocol?It is a link-state routing protocol.*It excludes subnet information from the routing updates. It uses the DUAL algorithm to insert backup routes into the topology table.It uses classless routing as the default method on the router.

1. Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. The PC is not communicating with the network properly. What is the cause? • The address is in the wrong subnet. • 192.168.10.31 is the broadcast address for this subnet. • The default gateway is incorrect. • The host address and default gateway are swapped.

2. Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192? • It is the value assigned by the Dijkstra algorithm that designates the number of hops in the network. • It is the value used by the DUAL algorithm to determine the bandwidth for the link. • It is the metric, which is cost. • It is the administrative distance.

3. Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.) • Paris(config)# router eigrp 100 • Paris(config)# router eigrp • Paris(config-router)# network 192.168.6.0 • Paris(config-router)# network 192.168.7.0 • Paris(config-router)# network 192.168.8.0 • Paris(config-router)# network 192.168.9.0

4. What are three features of CDP? (Choose three.) • tests Layer 2 connectivity • provides a layer of security • operates a OSI layers 2 and 3 • enabled by default on each interface • used for debugging Layer 4 connectivity issues • provides information on directly connected devices that have CDP enabled

5. Refer to the exhibit. What two statements are true based on the output shown? (Choose two.) • the reported distance to network 172.16.1.0 is 2172416 • 192.168.10.5 and 192.168.10.9 are feasible successors

• neighbors 192.168.10.9 and 192.168.10.5 have auto summary disabled. • router 3 is load balancing traffic to the 172.16.3.0 network across its serial interfaces. • all interfaces shown on Router3 are in the passive state and will not send EIGRP advertisements

6. Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.) • OSPF interval timers mismatch • gateway of last resort not redistributed • interface network type mismatch • no loopback interface configured • administrative distance mismatch • inconsistent authentication configuration

7. Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.) • The route to network 172.16.0.0 has an AD of 156160. • Network 192.168.0.16 can best be reached using FastEthernet0/0. • The AD of EIGRP routes has been manually changed to a value other than the default value. • Router1 is running both the EIGRP and OSPF routing process. • Network 172.17.0.0 can only be reached using a default route. • No default route has been configured.

8. Refer to the exhibit. The ORL router is unable to form a neighbor relationship with the JAX router. What is a possible cause of this problem? • Router JAX has the wrong autonomous-system number. • The command network 192.168.2.0 is missing from the EIGRP configuration on the JAX router. • Automatic summarization is not disabled on the JAX router. • Router JAX has the wrong IP address on the Fa0/1 interface.

9. Which statement is true regarding routing metrics? • All routing protocols use the same metrics. • EIGRP uses bandwidth as its only metric. • Routers compare metrics to determine the best route. • The larger metric generally represents the better path.

10. Which three statements are true of holddown timers? (Choose three.) • used by link state routing protocols to prevent routing loops • prevent update messages from reinstating a route that may have gone bad • allow routers to still forward packets to destination networks that are in holddown • limit the number of hops a packet can traverse through the network before it is discarded • prevent a router advertising a network through the same interface from which the network was learned permit lower metric updates received from any neighboring router to reinstate the route to a possibly down network

11. A router has learned about a network through static and dynamic routing processes. Which route will be used to reach network 192.168.168.0? • D 192.168.168.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Ethernet0 • O 192.168.168.0/24 [110/1012] via 192.168.200.1, 00:00:22, Ethernet0 • R 192.168.168.0/24 [120/1] via 192.168.200.1, 00:00:17, Ethernet0 • S 192.168.168.0/24 [1/0] via 192.168.200.1

12. The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result? • The ip classless command is not enabled on the Richmond router. • The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates. • The Richmond router is in a different autonomous system than the Suffolk router. • The ip subnet-zero command was not configured on the Suffolk router. • The ip classless command is not enabled on the Suffolk router.

13. Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.) • The router modifies the TTL field, decrementing it by one. • The router changes the source IP to the IP of the exit interface. • The router maintains the same source and destination IP. • The router changes the source physical address to the physical address of the exit interface. • The router changes the destination IP to the IP of the exit interface. • The router sends the packet out all other interfaces, besides the one it entered the router on.

14. Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.) • network address • loopback address • autonomous system number • subnet mask • wildcard mask • area ID

15. Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network? • The router chooses the first path that it learned and installs only that route in the routing table. • The router chooses the path with the lowest administrative distance and installs only that route in the routing table. • The router chooses the highest routing ID based on the advertised network IP addresses and installs only that route in the routing table. • The router installs all the equal cost paths in the routing table but sends packets out only one, holding the others in reserve in case the primary route goes down. • The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces.

16. Which of the following could describe the devices labeled "?" in the graphic? (Choose three.) • DCE • CSU/DSU • LAN switch • Modem • hub

17. Which three statements describe the operation of routing with EIGRP? (Choose three.) • As new neighbors are discovered, entries are placed in a neighbor table. • If the feasible successor has a higher advertised cost than the current successor route, then it becomes the primary route. • If hello packets are not received within the hold time, DUAL must recalculate the topology. • The reported distance is the distance to a destination as advertised by a neighbor. • EIGRP maintains full knowledge of the network topology in the topology table and exchanges full routing information with neighboring routers in every update. • EIGRP builds one routing table that contains routes for all configured routed protocols.

18. The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology? • The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork. • The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. • The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2. • The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.

19. Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choose two.) • 10.0.0.0/8 • 64.100.0.0/16 • 128.107.0.0/16 • 172.16.40.0/24 • 192.168.1.0/24 • 192.168.2.0/24

20. Refer to exhibit. A company network engineer enters the following commands in the routers:R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1When the engineer enters the show ip route command on R1, the routing table does not display the static route to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed per the graphic. What is a logical next step that the engineer could take in order to make the static route display in the routing table in R1? • Enter default routes in R1 and R2. • Enable the R1 and R2 serial interfaces. • Configure the static route to use an exit interface instead of a next-hop address. • Enter the copy run start command to force the router to recognize the configuration.

21. When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output? • D, SWH-2

• A, B, D • SWH-1, SWH-2 • B, D • SWH-1, A, B • A, B, D, SWH-1, SWH-2

22. Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table? • Both routes are installed and load balancing occurs across both paths. • The route via Path B is installed because the EIGRP route has the best metric to network 10.2.0.0/16. • The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16. • The route via Path B is installed because the EIGRP route has the lowest administrative distance to network 10.2.0.0/16. • The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.

23. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? • A(config)# router rip A(config-router)# passive-interface S0/0 • B(config)# router rip B(config-router)# network 192.168.25.48 B(config-router)# network 192.168.25.64 • A(config)# router rip A(config-router)# no network 192.168.25.32 • B(config)# router rip B(config-router)# passive-interface S0/0 • A(config)# no router rip

24. Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.) • Router1 is missing a route to the 172.16.0.0 network • Router1 is missing a route to the 192.168.1.0 network • Router2 is missing a route to the 10.0.0.0 network • Router2 is missing a route to the 172.16.0.0 network • Router3 is missing a route to the 10.0.0.0 network • Router3 is missing a route to the 192.168.0.0 network

25. Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1? • The Dijkstra algorithm will calculate the feasible successor. • DUAL will query neighbors for a route to network 192.168.1.0. • Neighbor 172.16.3.2 will be promoted to the feasible successor. • Traffic destined to the 192.168.1.0 network will be dropped immediately due to lack of a feasible successor.

26. Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is configured correctly, which two static routes could be configured on Router1 to enable Host A to reach network 172.16.0.0? (Choose two.) • ip route 172.16.0.0 255.255.0.0 S0/0 • ip route 172.16.0.0 255.255.0.0 S0/1 • ip route 172.16.0.0 255.255.0.0 192.168.0.1 • ip route 172.16.0.0 255.255.0.0 192.168.0.2 • ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0 • ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/1

27. Refer to the exhibit. The results of the show ip route command are displayed in the graphic for Router R2. Which route will be selected for a packet with a destination address of 10.1.4.1? • static route to 10.1.0.0/22 • RIP route to 10.1.0.0/23 • RIP route to 10.1.0.0/24 • 0.0.0.0/0 via 192.168.0.1

28. Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event? • Router4 will learn about the failed route 30 seconds later in the next periodic update. • Split horizon will prevent Router4 from fowarding packets to the 10.0.0.0 network until the holddown timer expires. • Router5 immediately flushes the unreachable route from its routing table. • Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.

29. Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router commands. On the basis of the exhibit, which three statements are true? (Choose three.) • The missing information for Blank 1 is the command show ip route. • The missing information for Blank 1 is the command debug ip route. • The missing information for Blank 2 is the number 100. • The missing information for Blank 2 is the number 120. • The missing information for Blank 3 is the letter R. • The missing information for Blank 3 is the letter C.

30. A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area? • Router_A(config-router)# ospf redistribute default-route • Router_B(config-router)# ospf redistribute default-route • Router_A(config-router)# default-information originate • Router_B(config-router)# default-information originate • Router_A(config-router)# ip ospf update-default • Router_B(config-router)# ip ospf update-default

31. Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26? • The packet will be dropped. • The packet will be forwarded to the gateway of last resort. • The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0. • The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.

32. Refer to the exhibit. A packet enters Router1 with a destination IP of 172.16.28.121. Which routing table entry will be used to forward this packet to the destination address? • 172.16.0.0/16 [1/0] via 192.168.0.1 • 172.16.0.0/20 [1/0] via 192.168.0.9 • 172.16.16.0/20 [1/0] via 192.168.0.17 • 0.0.0.0/0 is directly connected, Serial0/0/1

33. The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table? • C 172.16.1.0 is directly connected, Serial0/0 • S 172.16.1.0 is directly connected, Serial0/0 • C 172.16.1.0 [1/0] via 172.16.2.2 • S 172.16.1.0 [1/0] via 172.16.2.2

34. Using default settings, what is the next step in the router boot sequence after the IOS loads from flash? • Perform the POST routine. • Search for a backup IOS in ROM. • Load the bootstrap program from ROM. • Load the running-config file from RAM. • Locate and load the startup-config file from NVRAM.

35. What does RIP use to reduce convergence time in a larger network? • It reduces the update timer to 15 seconds if there are more then 10 routes. • It uses triggered updates to announce network changes if they happen in between the periodic updates. • It uses random pings to detect if a pathway is down and therefore is preemptive on finding networks that are down. • It uses multicast instead of broadcast to send routing updates.

36. Refer to the exhibit. What are the effects of the exhibited commands on the router? • All passwords are encrypted. • Only Telnet sessions are encrypted. • Only the enable password is encrypted. • Only the enable password and Telnet session are encrypted. • Enable and console passwords are encrypted.

37. Refer to the exhibit. What is the most efficient summarization of the routes attached to router R1? • 198.18.0.0/16 • 198.18.48.0/21 • 198.18.32.0/22 • 198.18.48.0/23

• 198.18.49.0/23 • 198.18.52.0/22

38. Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A? • All of the 192.168.x.0 networks will be in the routing table. • Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table. • The routing table will be empty because routes and dynamic routes have not been configured. • A default route is automatically installed in the routing table to allow connectivity between the networks.

39. Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route? • 1 • 2 • 3 • 4 • 5 • 6

40. When presented with multiple valid routes to a destination, what criteria does a router use to determine which routes to add to the routing table? • The router selects the routes with the best metric. All routes that have the same best metric are added to the routing table. • The router first selects routes with the lowest administrative distance. The resulting routes are then prioritized by metric and the routes with the best metric are added to the routing table. • The router selects the routes with the lowest administrative distance. All routes with the same lowest administrative distance are added to the routing table. • The router installs all routes in the routing table but uses the route with the best metric most when load balancing.

41. Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1? • 172.16.0.0/8 • 172.16.0.0/10 • 172.16.0.0/13 • 172.16.0.0/20 • 172.16.0.0/24

42. What is the purpose of the TTL field within an IP packet header? • clears an unreachable route from the routing table after the invalid timer expires. • prevents regular update messages from inappropriately reinstating a route that may have gone bad. • removes an unreachable route from the routing table after the flush timer expires • limits the period of time or number of hops a packet can traverse through the network before it should be discarded. • used to mark the route as unreachable in a routing update that is sent to other routers

43. Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router? • The JAX router has the wrong process ID. • The JAX router needs the network 10.0.0.0 0.0.0.255 area 0 command. • The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command. • The BOS router needs the network 192.168.3.0 0.0.0.255 area 0 command.

44. What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0? • R1(config-router)# network 172.16.0.0 0.0.0.255 area 0 • R1(config-router)# network 172.16.0.0 0.0.3.255 area 0 • R1(config-router)# network 172.16.0.0 0.0.15.255 area 0 • R1(config-router)# network 172.16.0.0 0.0.31.255 area 0

45. What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.) • The routers must elect a designated router. • The routers must agree on the network type. • The routers must use the same dead interval. • The routers must exchange link state requests. • The routers must exchange database description packets

46. Refer to the exhibit. Which statement is true concerning the routing configuration? • Using dynamic routing instead of static routing would have required fewer configuration steps.

• The 10.1.1.0/24 and 10.1.2.0/24 routes have adjacent boudaries and should be summarized. • The static route will not work correctly. • Packets routed to the R2 ethernet interface require two routing table lookups.

47. What can be determined from the output shown in the exhibit? (Choose two.) • Annapolis is a 2611 router that is connected to the S0/0 interface of the Montgomery router. • All of the routers are connected to Montgomery through an Ethernet switch. • Montgomery has Layer 2 connectivity with Cumberland. • Layer 3 connectivity is operational for all of the devices listed in the Device ID column. • An administrator consoled into the Waldorf router can ping the Brant router. • Brant, Fisherman, and Potomac are directly connected to Montgomery.

48. What is the function of the OSPF LSU packet? • used to confirm receipt of certain types of OSPF packets • used to establish and maintain adjacency with other OSPF routers • used to request more information about any entry in the BDR • used to announce new OSPF information and to reply to certain types of requests

50. Refer to the exhibit. All routers in the network are running RIPv2 and EIGRP with default routing protocol settings and have interfaces configured with the bandwidths that are shown in the exhibit. Which protocol will be used and how will traffic between the Router1 LAN and Router5 LAN be routed through the network? • RIPv2 will load balance across both paths between Router1 and Router5. • EIGRP will load balance across both paths between Router1 and Router5. • RIPv2 traffic will use the path Router1, Router2, Router5 because it has the least hops. • EIGRP traffic will use the path Router1, Router3, Router4, Router5 because it has the best metric.

51. Refer to the exhibit. A network administrator is trying to figure out why BOS does not have the 10.0.0.0/24 network in its routing table. All routers are configured for OSPF in area 0. The links between the routers are operational and the administrator is able to ping between all router interfaces. What is a logical next step that the network administrator should take to troubleshoot the problem? • Reboot the routers. • Change the OSPF process ID on all of the routers to 0. • Check to see if the cable is loose between BOS and JAX. • Check to see if CDP packets are passing between the routers. • Use show and debug commands to determine if hellos are propagating.

52. Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2? • triggered updates • poison reverse • holddown timers • split horizon

53. Which two router component and operation pair are correctly described? (Choose two.) • DRAM -loads the bootstrap • RAM -stores the operating system • Flash -executes diagnostics at bootup • NVRAM -stores the configuration file • ROM -stores the backup configuration file • POST -runs diagnostics on hardware modules

54. Which of the following are primary functions of a router? (Choose two.) • packet switching • microsegmentation • domain name resolution • path selection • flow control

55. Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network? • ADC • ABC • It will load balance the traffic between ADC and ABC • It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails.

56. Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem?

• Set the encapsulation on both routers to PPP. • Decrease the bandwidth on Serial 0/1/0 on router 2 to 1544. • Change the cable that connects the routers to a crossover cable. • Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.

57. Which two statements are true regarding link-state routing protocols? (Choose two.) • They do not work well in networks that require special heirarchical designs. • They are aware of the complete network topology. • They pass their entire routing tables to their directly connected neighbors only. • They offer rapid convergence times in large networks. • They rely on decreasing hop counts to determine the best path. • They do not include subnet masks in their routing updates.

58. Which three statements about routing protocols are true? (Choose three.) • OSPF elects designated routers on multiaccess links. • RIP does not support classless routing. • EIGRP supports unequal cost load balancing. • EIGRP uses broadcast traffic to establish adjacencies with its neighbors. • RIP does not advertise a route beyond a hop count of 15. • OSPF can convergence more quickly because it can find a feasible successor in its topology table when a successor route goes down.

1. Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26? • The packet will be dropped • The packet will be forwarded to the gateway of last resort. • The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0. • The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.

2. Which three statements are true of holddown timers? (Choose three.) • used by link state routing protocols to prevent routing loops • prevent update messages from reinstating a route that may have gone bad • allow routers to still forward packets to destination networks that are in holddown • limit the number of hops a packet can traverse through the network before it is discarded • prevent a router advertising a network through the same interface from which the network was learned • permit lower metric updates received from any neighboring router to reinstate the route to a possibly down Network

3. What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0? • R1(config-router)# network 172.16.0.0 0.0.0.255 area 0 • R1(config-router)# network 172.16.0.0 0.0.3.255 area 0 • R1(config-router)# network 172.16.0.0 0.0.15.255 area 0 • *R1(config-router)# network 172.16.0.0 0.0.31.255 area 0

4. Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router? • The JAX router has the wrong process ID. • The JAX router needs the network 10.0.0.0 0.0.0.255 area 0 command. • The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command. • The BOS router needs the network 192.168.3.0 0.0.0.255 area 0 command.

5. Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network? • ADC • ABC • It will load balance the traffic between ADC and ABC • It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails.

6. Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is configured correctly, which two static routes could be configured on Router1 to enable Host A to reach network 172.16.0.0? (Choose two.) • ip route 172.16.0.0 255.255.0.0 S0/0 • ip route 172.16.0.0 255.255.0.0 S0/1 • ip route 172.16.0.0 255.255.0.0 192.168.0.1 • ip route 172.16.0.0 255.255.0.0 192.168.0.2

• ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0 • ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/1

7. What can be determined from the output shown in the exhibit? (Choose two.) • Annapolis is a 2611 router that is connected to the S0/0 interface of the Montgomery router. • All of the routers are connected to Montgomery through an Ethernet switch. • Montgomery has Layer 2 connectivity with Cumberland. • Layer 3 connectivity is operational for all of the devices listed in the Device ID column. • An administrator consoled into the Waldorf router can ping the Brant router. • Brant, Fisherman, and Potomac are directly connected to Montgomery.

8. Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table? • Both routes are installed and load balancing occurs across both paths. • The route via Path B is installed because the EIGRP route has the best metric to network 10.2.0.0/16. • The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16. • The route via Path B is installed because the EIGRP route has the lowest administrative distance to network 10.2.0.0/16. • The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.

9. Which two statements are true regarding link-state routing protocols? (Choose two.) • They do not work well in networks that require special heirarchical designs. • They are aware of the complete network topology. • They pass their entire routing tables to their directly connected neighbors only. • They offer rapid convergence times in large networks. • They rely on decreasing hop counts to determine the best path. • They do not include subnet masks in their routing updates.

10. A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area? • Router_A(config-router)# ospf redistribute default-route • Router_B(config-router)# ospf redistribute default-route • Router_A(config-router)# default-information originate • Router_B(config-router)# default-information originate • Router_A(config-router)# ip ospf update-default • Router_B(config-router)# ip ospf update-default

11. Refer to the exhibit. What are the effects of the exhibited commands on the router? All passwords are encrypted. • Only Telnet sessions are encrypted. • Only the enable password is encrypted. • Only the enable password and Telnet session are encrypted. • Enable and console passwords are encrypted.

12. When presented with multiple valid routes to a destination, what criteria does a router use to determine which routes to add to the routing table? • The router selects the routes with the best metric. All routes that have the same best metric are added to the routing table. • The router first selects routes with the lowest administrative distance. The resulting routes are then prioritized by metric and the routes with the best metric are added to the routing table. • The router selects the routes with the lowest administrative distance. All routes with the same lowest administrative distance are added to the routing table. • The router installs all routes in the routing table but uses the route with the best metric most when load balancing.

13. Which statement is true regarding routing metrics? • All routing protocols use the same metrics. • EIGRP uses bandwidth as its only metric. • Routers compare metrics to determine the best route. • The larger metric generally represents the better path.

14. A router has learned about a network through static and dynamic routing processes. Which route will be used to reach network 192.168.168.0? • D 192.168.168.0/24 [90/2195456] via 192.168.200.1, 00:00:09, Ethernet0 • O 192.168.168.0/24 [110/1012] via 192.168.200.1, 00:00:22, Ethernet0 • R 192.168.168.0/24 [120/1] via 192.168.200.1, 00:00:17, Ethernet0 • S 192.168.168.0/24 [1/0] via 192.168.200.1

15. Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.) • The router modifies the TTL field, decrementing it by one. • The router changes the source IP to the IP of the exit interface. • The router maintains the same source and destination IP. • The router changes the source physical address to the physical address of the exit interface. • The router changes the destination IP to the IP of the exit interface. • The router sends the packet out all other interfaces, besides the one it entered the router on.

16. When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output? • D, SWH-2 • A, B, D • SWH-1, SWH-2 • B, D • SWH-1, A, B • A, B, D, SWH-1, SWH-2

17. Refer to the exhibit. A network administrator is trying to determine why router JAX has no OSPF routes in its routing table. All routers are configured for OSPF area 0. From the JAX router, the administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORL router but no other router interfaces. What is a logical step that the network administrator should take to troubleshoot the problem? • Reboot the routers. • Change the OSPF process ID on all of the routers to 0. • Check to see if the cable is loose between ORL and JAX. • Check to see if CDP packets are passing between the routers. • Use show and debug commands to determine if hellos are propagating.

18. Using default settings, what is the next step in the router boot sequence after the IOS loads from flash? • Perform the POST routine. • Search for a backup IOS in ROM. • Load the bootstrap program from ROM. • Load the running-config file from RAM. • Locate and load the startup-config file from NVRAM.

19. Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1? • 172.16.0.0/8 • 172.16.0.0/10 • 172.16.0.0/13 • 172.16.0.0/20 • 172.16.0.0/24

20. The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology? • The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork. • The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3. • The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2. • The subnetwork assigned to Ethernet0 of Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.

21. Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. • The PC is not communicating with the network properly. What is the cause? • The address is in the wrong subnet. • 192.168.10.31 is the broadcast address for this subnet. • The default gateway is incorrect. • The host address and default gateway are swapped.

22. Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event? • Router4 will learn about the failed route 30 seconds later in the next periodic update. • Split horizon will prevent Router4 from forwarding packets to the 10.0.0.0 network until the holddown timer expires. • Router5 immediately flushes the unreachable route from its routing table. • Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.


24. Refer to the exhibit. What is the most efficient summarization of the routes attached to router R1? • 198.18.0.0/16 • 198.18.48.0/21 • 198.18.32.0/22 • 198.18.48.0/23 • 198.18.49.0/23 • 198.18.52.0/22

25. What is the purpose of the TTL field within an IP packet header? • clears an unreachable route from the routing table after the invalid timer expires • prevents regular update messages from inappropriately reinstating a route that may have gone bad • removes an unreachable route from the routing table after the flush timer expires • limits the period of time or number of hops a packet can traverse through the network before it should be discarded • used to mark the route as unreachable in a routing update that is sent to other routers

26. Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.) • Paris(config)# router eigrp 100 • Paris(config)# router eigrp • Paris(config-router)# network 192.168.6.0 • Paris(config-router)# network 192.168.7.0 • Paris(config-router)# network 192.168.8.0 • Paris(config-router)# network 192.168.9.0

27. What does RIP use to reduce convergence time in a larger network? • It reduces the update timer to 15 seconds if there are more then 10 routes. • It uses triggered updates to announce network changes if they happen in between the periodic updates. • It uses random pings to detect if a pathway is down and therefore is preemptive on finding networks that are down. • It uses multicast instead of broadcast to send routing updates.

28. Refer to the exhibit. What two statements are true based on the output shown? (Choose two.) • the reported distance to network 172.16.1.0 is 2172416 • 192.168.10.5 and 192.168.10.9 are feasible successors • neighbors 192.168.10.9 and 192.168.10.5 have auto summary disabled • router 3 is load balancing traffic to the 172.16.3.0 network across its serial interfaces • all interfaces shown on Router3 are in the passive state and will not send EIGRP advertisements

29. Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2? • triggered updates • poison reverse • holddown timers • split horizon

30. What is the function of the OSPF LSU packet? • used to confirm receipt of certain types of OSPF packets • used to establish and maintain adjacency with other OSPF routers • used to request more information about any entry in the BDR • used to announce new OSPF information and to reply to certain types of requests

31. Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network? • The router chooses the first path that it learned and installs only that route in the routing table. • The router chooses the path with the lowest administrative distance and installs only that route in the routing table. • The router chooses the highest routing ID based on the advertised network IP addresses and installs only that route in the routing table.

• The router installs all the equal cost paths in the routing table but sends packets out only one, holding the others in reserve in case the primary route goes down. • The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces.

32. Refer to the exhibit. A packet enters Router1 with a destination IP of 172.16.28.121. Which routing table entry will be used to forward this packet to the destination address? • 172.16.0.0/16 [1/0] via 192.168.0.1 • 172.16.0.0/20 [1/0] via 192.168.0.9 • 172.16.16.0/20 [1/0] via 192.168.0.17 • 0.0.0.0/0 is directly connected, Serial0/0/1

33. Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem? • Set the encapsulation on both routers to PPP. • Decrease the bandwidth on Serial 0/1/0 on router 2 to 1544. • Change the cable that connects the routers to a crossover cable. • Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.

34. Which two router component and operation pair are correctly described? (Choose two.) • DRAM - loads the bootstrap • RAM - stores the operating system • Flash - executes diagnostics at bootup • NVRAM - stores the configuration file • ROM - stores the backup configuration file • POST - runs diagnostics on hardware modules

35. The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table? • C 172.16.1.0 is directly connected, Serial0/0 • S 172.16.1.0 is directly connected, Serial0/0 • C 172.16.1.0 [1/0] via 172.16.2.2 • S 172.16.1.0 [1/0] via 172.16.2.2

36. Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route? • 1 • 2 • 3 • 4 • 5 • 6

37. Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A? • All of the 192.168.x.0 networks will be in the routing table. • Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table. • The routing table will be empty because routes and dynamic routes have not been configured. • A default route is automatically installed in the routing table to allow connectivity between the networks.

38. Which three statements about routing protocols are true? (Choose three.) • OSPF elects designated routers on multiaccess links. • RIP does not support classless routing. • EIGRP supports unequal cost load balancing. • EIGRP uses broadcast traffic to establish adjacencies with its neighbors. • RIP does not advertise a route beyond a hop count of 15. • OSPF can convergence more quickly because it can find a feasible successor in its topology table when a successor route goes down.

39. Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1? • The Dijkstra algorithm will calculate the feasible successor. • DUAL will query neighbors for a route to network 192.168.1.0. • Neighbor 172.16.3.2 will be promoted to the feasible successor. • Traffic destined to the 192.168.1.0 network will be dropped immediately due to lack of a feasible successor.

40. Refer to the exhibit. Which statement is true concerning the routing configuration? • Using dynamic routing instead of static routing would have required fewer configuration steps.

• The 10.1.1.0/24 and 10.1.2.0/24 routes have adjacent boudaries and should be summarized. • The static route will not work correctly. • *Packets routed to the R2 ethernet interface require two routing table lookups.

41. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? • A(config)# router rip A(config-router)# passive-interface S0/0 • B(config)# router rip B(config-router)# network 192.168.25.48 B(config-router)# network 192.168.25.64 • A(config)# router rip A(config-router)# no network 192.168.25.32 • B(config)# router rip B(config-router)# passive-interface S0/0 A(config)# no router rip

42. Which of the following could describe the devices labeled "?" in the graphic? (Choose three.) • DCE • CSU/DSU • LAN switch • modem • hub

43. Which of the following are required when adding a network to the OSPF routing process configuration? Choose three.) • network address • loopback address • autonomous system number • subnet mask • wildcard mask • area ID

44. The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result? • The ip classless command is not enabled on the Richmond router. • The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates. • The Richmond router is in a different autonomous system than the Suffolk router. • The ip subnet-zero command was not configured on the Suffolk router. • The ip classless command is not enabled on the Suffolk router.

45. Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router commands. On the basis of the exhibit, which three statements are true? (Choose three.) • The missing information for Blank 1 is the command show ip route. • The missing information for Blank 1 is the command debug ip route. • The missing information for Blank 2 is the number 100. • The missing information for Blank 2 is the number 120. • The missing information for Blank 3 is the letter R. • The missing information for Blank 3 is the letter C.

46. Refer to exhibit. A company network engineer enters the following commands in the routers: R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 When the engineer enters the show ip route command on R1, the routing table does not display the static route to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed per the graphic. What is a logical next step that the engineer could take in order to make the static route display in the routing table in R1? • Enter default routes in R1 and R2. • Enable the R1 and R2 serial interfaces. • Configure the static route to use an exit interface instead of a next-hop address. • Enter the copy run start command to force the router to recognize the configuration.

47. Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.) • Router1 is missing a route to the 172.16.0.0 network • Router1 is missing a route to the 192.168.1.0 network • Router2 is missing a route to the 10.0.0.0 network

• Router2 is missing a route to the 172.16.0.0 network • Router3 is missing a route to the 10.0.0.0 network • Router3 is missing a route to the 192.168.0.0 network

48. What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency?Choose two.) • The routers must elect a designated router. • The routers must agree on the network type. • The routers must use the same dead interval. • The routers must exchange link state requests. • The routers must exchange database description packets.

49. Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192? • It is the value assigned by the Dijkstra algorithm that designates the number of hops in the network. • It is the value used by the DUAL algorithm to determine the bandwidth for the link. • It is the metric, which is cost. • It is the administrative distance.

50. Refer to the exhibit. The results of the show ip route command are displayed in the graphic for Router R2. Which route will be selected for a packet with a destination address of 10.1.4.1? • static route to 10.1.0.0/22 • RIP route to 10.1.0.0/23 • RIP route to 10.1.0.0/24 • 0.0.0.0/0 via 192.168.0.1


52. Which of the following are primary functions of a router? (Choose two.) • packet switching • microsegmentation • domain name resolution • path selection • flow control

53. What are three features of CDP? (Choose three.) • tests Layer 2 connectivity • provides a layer of security • operates a OSI layers 2 and 3 • enabled by default on each interface • used for debugging Layer 4 connectivity issues • provides information on directly connected devices that have CDP enabled

54. Refer to the exhibit. All routers in the network are running RIPv2 and EIGRP with default routing protocol settings and have interfaces configured with the bandwidths that are shown in the exhibit. Which protocol will be used and how will traffic between the Router1 LAN and Router5 LAN be routed through the network? • RIPv2 will load balance across both paths between Router1 and Router5. • EIGRP will load balance across both paths between Router1 and Router5. • RIPv2 traffic will use the path Router1, Router2, Router5 because it has the least hops. • EIGRP traffic will use the path Router1, Router3, Router4, Router5 because it has the best metric.

55. Which three statements describe the operation of routing with EIGRP? (Choose three.) • As new neighbors are discovered, entries are placed in a neighbor table. • If the feasible successor has a higher advertised cost than the current successor route, then it becomes the primary route. • If hello packets are not received within the hold time, DUAL must recalculate the topology. • The reported distance is the distance to a destination as advertised by a neighbor. • EIGRP maintains full knowledge of the network topology in the topology table and exchanges full routing information with neighboring routers in every update. • EIGRP builds one routing table that contains routes for all configured routed protocols.

56. Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.) • OSPF interval timers mismatch • gateway of last resort not redistributed • interface network type mismatch • no loopback interface configured • administrative distance mismatch • inconsistent authentication configuration

57. What is the first step OSPF and IS-IS routers take in building a shortest path first database? • learn about directly connected networks • send hello to discover neighbors and form adjacencies • choose successors and feasible successors to populate the topology table • flood LSPs to all neighbors informing them of all known networks and their link states

1. Refer to the exhibit. The output of the show ip route command for three routers on a network is displayed. All routers are operational, pings are not blocked on this network, and no default routes are installed. Which two pings will fail? (Choose two.) • from R1 to 172.16.1.1 • from R1 to 192.168.3.1 • from R2 to 192.168.1.1 • from R2 to 192.168.3.1 • from R3 to 192.168.1.1

2. A router that uses the RIP routing protocol has an entry for a network in the routing table. It then receives an update with another entry for the same destination network but with a lower hop count. What action will the router take for this new update? • It will append the update information to the routing table. • It will invalidate the entry for that network in the routing table. • It will replace the existing routing table entry with the new information. • It will ignore the new update.

3. Which two statements are true for OSPF Hello packets? (Choose two.) • They negotiate correct parameters among neighboring interfaces. • They are used for dynamic neighbor discovery. • They use timers to elect the designated router with the fastest link. • They are received from all routers on the network and used to determine the complete network topology. • They are used to maintain neighbor relationships.

4. A network administrator needs to configure a single router to load-balance the traffic over unequal cost paths. Which routing protocol should the administrator use? • EIGRP • OSPF • RIPv1 • RIPv2

5. Which two statements are correct about the split horizon with poison reverse method of routing loop prevention? (Choose two.) • It is enabled by default on all Cisco IOS implementations. • It assigns a value that represents an infinite metric to the poisoned route. • It sends back the poisoned route update to the same interface from where it was received. • It instructs routers to hold all changes that might affect routes, for a specified period of time. • It limits the number of hops a packet can traverse through the network before it is discarded.

6. Refer to the exhibit. The show cdp neighbors command was run on one of the devices as shown. Based on this information, which two facts can be determined? (Choose two.) • The command was run on the router. • ABCD is a non-CISCO device. • Layer 3 connectivity between two devices exists. • ABCD supports routing capability. • ABCD is connected to the Fa0/0 interface of the neighboring device.

7. Refer to the exhibit. The network has three connected routers: R1, R2 and R3. The routes of all three routers are displayed. What can be verified from the output? • R1 and R3 are connected to each other via the S0/0/0 interface. • The IP address of the S0/0/0 interface of R1 is 10.1.1.2. • The IP address of the S0/0/1 interface of R2 is 10.3.3.2. • R2 is connected to the S0/0/1 interface of R3.


9. Refer to the exhibit. All the routers are properly configured to use the RIP routing protocol with default settings, and the network is fully converged. Router A is forwarding data to router E. Which statement is true about the routing path? • Router A will send the data via the A-D-E path that is listed in the routing table. • Router A will load-balance the traffic between A-B-E and A-C-E. • Router A will determine that all paths have equal metric cost. • Router A will send the data through A-D-E and keep A-B-E and A-C-E as the backup paths.

10. Refer to the exhibit. The network administrator has run the following command on R1. R1# ip route 192.168.2.0 255.255.255.0 172.16.1.2What is the result of running this command? • Traffic for network 192.168.2.0 is forwarded to 172.16.1.2. • This route is automatically propagated throughout the entire network. • Traffic for all networks is forwarded to 172.16.1.2. • The command invokes a dynamic routing protocol for 192.168.2.0.

11. Refer to the exhibit. The network administrator is planning IP addressing of a new network. What part of this addressing scheme must be changed to allow communication between host A and the server? • the IP address of the server • the default gateway of host A • the IP address of host A • the default gateway of the server

12. Refer to the exhibit. A network administrator has configured OSPF using the following command: network 192.168.1.32 0.0.0.31 area 0 Which router interface will participate in OSPF? • FastEthernet 0/0 • FastEthernet 0/1 • Serial 0/0/0 • Serial 0/0/1

13. Refer to the exhibit. All routers are configured to run RIPv1 and are fully converged. Which routing updates will be received by R3? • updates for 192.168.1.0/24 and 192.168.2.0/24 • updates for 172.16.2.0/24 and 172.16.3.0/24 • updates for 172.16.1.0/24, 172.16.2.0/24 and 172.16.3.0/24 • updates for 172.16.0.0/16

14. Refer to the exhibit. Both routers are using the RIP protocol. Devices on the 192.168.1.1 network can ping the S0/0/0 interface on R2 but cannot ping devices on the 192.168.2.1 network. What is a possible cause of this problem? • The routers are configured with different versions of RIP. • R2 is not forwarding the routing updates. • The R1 configuration should include the no auto-summary command. • The maximum path number has been exceeded.

15. When a router boots, what is the default order to locate the Cisco IOS if there is no boot system command? • ROM, TFTP server, flash • flash, TFTP server, RAM • flash, NVRAM, TFTP server • ROM, flash, TFTP server

16. Refer to the exhibit. Which router is advertising subnet 172.16.1.32/28? • Router1 • Router2 • Router3 • Router4

17. Which mechanism helps to avoid routing loops by advertising a metric of infinity? • route poisoning

• split horizon • hold-down timer • triggered updates

18. Refer to the exhibit. What is the meaning of the highlighted value 120? • It is the metric that is calculated by the routing protocol. • It is the value that is used by the DUAL algorithm to determine the bandwidth for the link. • It is the administrative distance of the routing protocol. • It is the hold-down time, measured in seconds, before the next update.

19. Refer to the exhibit. A network administrator successfully pings R1 from R3. Next, the administrator runs the show cdp neighbors command on R3. The output of this command is displayed.What are two reasons for the absence of R1 in the output? (Choose two.) • There is a Layer 2 connectivity problem between R1 and R3. • The Fa0/0 interface of R1 is configured with an incorrect IP address. • The no cdp run command has been run at R1. • The no cdp enable command has been run at Fa0/1 interface of R3.R1 is powered off.

20. Refer to the exhibit. A device is required to complete the connection between router R1 and the WAN. Which two devices can be used for this? (Choose two.) • a CSU/DSU device • a modem • an Ethernet switch • a hub • a bridge

21. In a complex lab test environment, a router has discovered four paths to 192.168.1.0/24 via the use of the RIP routing process. Which route will be installed in the routing table after the discovery of all four paths? • R 192.168.1.0/24 [120/3] via 192.168.110.1, 00:00:17, Serial 0/1/0 • R 192.168.1.0/24 [120/2] via 192.168.200.1, 00:00:17, Serial 0/0/0 • R 192.168.1.0/24 [120/1] via 192.168.100.1, 00:00:17, Serial 0/0/1 • R 192.168.1.0/24 [120/4] via 192.168.101.1, 00:00:17, Serial 0/1/1

22. Refer to the exhibit. A network administrator accesses router R1 from the console port to configure a newly connected interface. What passwords will the network administrator need to enter to make the connection and the necessary configuration changes? • the Cisco123 password only • the Cisco789 password only • the Cisco001 password only • the Cisco001 password and the Cisco789 passwords • the Cisco001 password and the Cisco123 passwords

23. Refer to the exhibit. A network administrator adds this command to router R1: ip route 192.168.2.0 255.255.255.0 S0/0/0. What is the result of adding this command? • This route is automatically propagated throughout the network. • The traffic for network 172.16.1.0 is forwarded to network 192.168.2.0. • A static route is established. • The traffic for all Class C networks is forwarded to 172.16.1.2.

24. Refer to the exhibit. The router receives a packet that is destined for 192.168.5.79. How will the router handle this packet? • It will forward the packet via the Serial0/0/1 interface. • It will forward the packet via the FastEthernet0/0 interface. • It will forward the packet via the Serial0/0/0 interface. • It will drop the packet.

25. Which two statements are true about classless routing protocols? (Choose two.) • They can be used for discontiguous subnets. • They can forward supernet routes in routing updates. • They cannot implement classful routes in routing tables. • They use only a hop count metric. • They do not include the subnet mask in routing updates.

26. Refer to the exhibit. How many routes are child routes? • 1 • 3 • 4

• 6

27. A router has EIGRP configured as the only routing protocol. In what two ways does EIGRP respond if there is no feasible successor route to a destination network and the successor route fails? (Choose two.) • It broadcasts hello packets to all routers in the network to re-establish neighbor adjacencies. • It sends queries to adjacent neighbors until a new successor route is found. • It immediately sends its entire routing table to its neighbors. • It sends queries to adjacent neighbors until the lost route is unknown to the neighbors. • It automatically forwards traffic to a fallback default route until a successor route is found.


29. Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.) • The administrative distance of EIGRP has been set to 50. • All routes are stable. • The show ip eigrp topology command has been run on R1. • The serial interface between the two routers is down. • Each route has one feasible successor.

30. Refer to the exhibit. All routers are properly configured with default configurations and are running the OSPF routing protocol. The network is fully converged. A host on the 192.168.3.0/24 network is communicating with a host on the 192.168.2.0/24 network. Which path will be used to transmit the data? • The data will be transmitted via R3-R2. • The data will be transmitted via R3-R1-R2. • The traffic will be load-balanced between two paths — one via R3-R2, and the other via R3-R1-R2. • The data will be transmitted via R3-R2, and the other path via R3-R1-R2 will be retained as the backup path.

31. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? • A(config)# router rip A(config-router)# passive-interface S0/0 • B(config)# router rip B(config-router)# network 192.168.25.48 B(config-router)# network 192.168.25.64 • A(config)# router rip A(config-router)# no network 192.168.25.32 • B(config)# router rip B(config-router)# passive-interface S0/0 • A(config)# no router rip

32. Refer to the exhibit. The hosts on the R1 LAN are unable to access the Internet. What is incorrectly configured? • the IP address of the Fa 0/0 interface at R1 • the IP address of the S 0/0/1 interface at R2 • the IP address of the S 0/0/0 interface at R1 • the subnet mask of the S 0/0/1 interface at R2

33. Refer to the exhibit. A ping from R1 to 10.1.1.2 is successful, but a ping from R1 to 192.168.2.0 fails. What is the cause of this problem? • There is no gateway of last resort at R1. • The serial interface between the two routers is down. • A default route is not configured on R1. • The static route for 192.168.2.0 is incorrectly configured.

34. Refer to the exhibit. The network administrator has run the show ip protocol command on R1. What can be determined from the exhibited output? • The router is using RIPv2. • The router is not forwarding routing updates. • The router is receiving updates for both versions of RIP. • The FastEthernet0/0 interface is down.

35. Refer to the exhibit. All routers are configured to use the EIGRP routing protocol with default settings, all routes are advertised on all routers, and the network is fully converged. Which path will the data take to travel between 172.16.1.0/24 and 192.168.100.0/24? • It will travel via A, B, and C. • It will travel via A, F, E, D, and C. • It will travel via A, G, H, and C. • The traffic will be load-balanced on all paths.

36. Refer to the exhibit. All routers are configured for OSPF area 0. The network administrator requires that R2 always be the DR and maintain adjacency.Which two configurations can achieve this? (Choose two.) • Change the OSPF area of R2 to a higher value. • Change the router ID for R2 by assigning the IP address 172.16.30.5/24 to the Fa0/0 interface. • Change the priority values of the Fa0/0 interfaces of R1 and R3 to 0. • Configure a loopback interface on R2, with an IP address higher than any IPaddress on the other routers. • Configure R1 and R3 with an IP address whose value is higher than that of R2.

37. Refer to the exhibit. Host A is unable to access the Internet, and troubleshooting has revealed that this is due to an addressing problem. What is incorrectly configured in this network? • the IP address of the Fa 0/0 interface of R1 • the subnet mask of the S 0/0/0 interface of R1 • the IP address of the S 0/0/0 interface of R1 • the subnet mask of the S0/0/0 interface of R2

38. Refer to the exhibit. All routes are advertised and fully operational on all routers. Which statement is true about the path that the data will take from router A to router B? • If EIGRP is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, D. • If RIPv1 is used with default configurations, the data will be load-balanced on all paths. • If EIGRP and OSPF are both used with default configurations, the data will be sent through paths learned by the OSPF protocol. • If RIPv2 is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, D.

39. Refer to the exhibit. The interfaces of all routers are configured for OSPF area 0. R3 can ping R1, but the two routers are unable to establish a neighbor adjacency. What should the network administrator do to troubleshoot this problem? • Check if the interfaces of the routers are enabled. • Check the hello and dead intervals between the routers. • Check the process ID of both routers. • Check if CDP is enabled on all the routers.

40. Refer to the exhibit. What information can be determined from the highlighted output? • R1 is originating the route 172.30.200.32/28. • Automatic summarization is disabled. • The 172.30.200.16/28 network is one hop away from R1. • A classful routing protocol is being used.

41. Which two router component and operation pair are correctly described? (Choose two.) • DRAM -loads the bootstrap • RAM -stores the operating system • Flash -executes diagnostics at bootup • NVRAM -stores the configuration file • ROM -stores the backup configuration file • POST -runs diagnostics on hardware modules

42. Which routing protocol by default uses bandwidth and delay to calculate the metric of a route? • RIPv1 • RIPv2 • OSPF • EIGRP

43. Two routers need to be configured within a single OSPF area. Which two components need to be configured on both routers to achieve this? (Choose two.) • the same process ID • the same area ID • network addresses and wildcard masks • the same router ID • the same loop back address

44. Refer to the exhibit. The networks that are connected to R1 have been summarized for R2 as 192.168.136.0/21. Which packet destination address will R2 forward to R1? • 192.168.135.1 • 192.168.142.1 • 192.168.144.1 • 192.168.128.1

45. Refer to the exhibit. R1 is running RIP with default parameters. R1 has learned four different paths with the same metrics to network 192.168.6.0. Which path or paths will R1 use to forward a packet that is destined to 192.168.6.10? • the first path that the router learned. • only the first two of the four paths that the router learned. • the last path that the router learned. • all four paths.

46. What are two functions of a router? (Choose two.) • It connects multiple IP networks. • It controls the flow of data via the use of Layer 2 addresses. • It determines the best path to send packets. • It manages the VLAN database. • It increases the size of the broadcast domain.

47. Refer to the exhibit. Which statement is true about the routing process for this network? • A packet leaves interface Fa0/0 of R1 with the source MAC address as 000C.3010.9260. • The packet leaves interface Fa0/0 of R1 with the source MAC address as 000C.3010.9260. • The no shutdown command needs to run on the Fa0/0 interface of R1. • The Fa0/0 interface of R2 could be configured with the IP address 172.16.4.1/24.

48. Refer to the exhibit. A network administrator has run the show interface command. The output of this command is displayed. What is the first step that is required to make this interface operational? • Switch the cable with a known working cable. • Issue the no shutdown command on the interface. • Configure the interface as a loopback interface. • Set the encapsulation for the interface.

49. Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been recently installed in the network. Which set of commands is required to configure a single area OSPF for the networks that are connected to R2? • R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0 • R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config)# router ospf 2 R2(config-router)# network 10.1.1.0 0.0.0.3 area 0 • R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.1.1.0 0.0.0.3 area 1 • R2(config)# router ospf 1 R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 R2(config-router)# network 10.0.0.0 0.0.0.3 area 1

50. Refer to the exhibit. The command ip route 0.0.0.0 0.0.0.0 S0/0/0 is run on router R2. What are the two results of this command? (Choose two.) • A static route will be updated in the routing table. • The traffic from the Internet will be directed to R2. • The traffic from the source network 172.16.0.0/22 will be blocked. • The route will be specified as the default route for all networks not defined in the routing table. • All the broadcasts will be forwarded via the S0/0/0 interface of R2.

51. Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.) • The router modifies the TTL field, decrementing it by one. • The router changes the source IP to the IP of the exit interface. • The router maintains the same source and destination IP. • The router changes the source physical address to the physical address of the exit interface. • The router changes the destination IP to the IP of the exit interface.

• The router sends the packet out all other interfaces, besides the one it entered the router on.

52. What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.) • The routers must elect a designated router. • The routers must agree on the network type. • The routers must use the same dead interval. • The routers must exchange link state requests. • The routers must exchange database description packets.

53. Refer to the exhibit. Although both the routers can ping the serial interface of their neighbors, they are unable to ping the Ethernet interfaces of other routers. Which two statements are true for this network? (Choose two.) • The administrative distance has been set to 50 on both routers. • R2 is learning about network 192.168.1.0. • R1 is learning about network 192.168.2.0. • The network 10.1.1.0 command has not been run on both routers. • Autosummarization is enabled on both routers.

54. Which two situations require the use of a link-state protocol? (Choose two.) • Fast convergence of the network is critical. • The network is very large. • The network administrator has limited knowledge to configure and troubleshoot routing protocols.The network is a flat network. • The capacity of the router is low.

55. Refer to the exhibit. What information can be determined from the displayed output? • EIGRP packets are waiting to be sent to the neighbors. • The adjacencies between the routers are yet to be established. • The IP address 192.168.10.10 is configured at serial interface S0/0/1 of router R2. • Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface.

56. Refer to the exhibit. PC1 is unable to access the Internet. What is the cause of the problem? • An incorrect IP address is configured between the two routers. • No static route is configured on Router2. • A routing loop has occurred. • No routing protocol is configured on either of the two routers.

57. Refer to the exhibit. What summarization should R2 use to advertise its LAN networks to R1? • 172.16.0.0/24 • 172.16.4.0/22 • 172.16.4.0/23 • 172.16.4.0/24

1. What are two functions of a router? (Choose two.) It connects multiple IP networks. It controls the flow of data via the use of Layer 2 addresses. It determines the best path to send packets. It manages the VLAN database. It increases the size of the broadcast domain

2. When a router boots, what is the default order to locate the Cisco IOS if there is no boot system command? ROM, TFTP server, flash flash, TFTP server, ROM flash, NVRAM, TFTP server NVRAM, TFTP server, flash

3. Which router component is used to store the routing table? Flash NVRAM ROM SDRAM

4. Refer to the exhibit. How many routes are child routes?


1 3 4 6

5. Refer to the exhibit. Which statement is true concerning the routing configuration? Using dynamic routing instead of static routing would have required fewer configuration steps. The 10.1.1.0/24 and 10.1.2.0/24 routes have adjacent boundaries and should be summarized. Packets routed to the R2 Fast Ethernet interface require two routing table lookups. The static route will not work correctly

6. Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26?

The packet will be dropped. The packet will be forwarded to the gateway of last resort. The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0. The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1

7. Refer to the exhibit. Routers R1 and R3 use different routing protocols with default administrative distance values. All devices are properly configured and the destination network is advertised by both protocols.

Which path will be used to transmit the data packets between PC1 and PC2? The packets will travel via R2-R1. The packets will travel via R2-R3. The traffic will be load-balanced between two paths — via R2-R1 and via R2-R3. The packets will travel via R2-R3, and the other path via R2-R1 will be retained as the backup path

8. Refer to the exhibit. Router R1 is configured as shown in the exhibit. PC1 on 172.16.1.0/24 network can reach the default gateway on R1. The rest of the routers are configured with the correct IP addresses on the interfaces. Routers R2 and R3 do not have static or dynamic routing enabled. How far will PC1 be able to successfully ping?

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wUaqtUI8I/AAAAAAAAAEM/D4T_FjnqIFc/s1600-h/4.png

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wVMT9N7aI/AAAAAAAAAEU/3DH7zIoPw7A/s1600-h/6.jpg

router R1 Fa0/0 interface router R1 S0/0/0 interface router R2 S0/0/0 interface router R2 Fa0/0 and S0/0/1 interfaces router R3 Fa0/0 and S0/0/0 interfaces

9. Refer to the exhibit. All routers are properly configured to use the EIGRP routing protocol with default settings, and the network is fully converged. Which statement correctly describes the path that the traffic will use from the 10.1.1.0/24 network to the 10.1.2.0/24 network?

It will use the A-D path only. It will use the path A-D, and the paths A-C-D and A-B-D will be retained as the backup paths. It will use all the paths equally in a round-robin fashion. The traffic will be load-balanced between A-B-D and A-C-D.

10. Which two statements are true regarding link-state routing protocols? (Choose two.) They are aware of the complete network topology. They offer rapid convergence times in large networks. They do not include subnet masks in their routing updates. They rely on decreasing hop counts to determine the best path. They do not work well in networks that require special hierarchical designs. They pass their entire routing tables to their directly connected neighbors only

11. Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table?

http://3.bp.blogspot.com/_nXUjvBK2YII/S5wV9vLhk5I/AAAAAAAAAEY/9hmN-4I-ecA/s1600-h/8.jpg

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wWP1rprpI/AAAAAAAAAEc/mXLFraMgVgc/s1600-h/9.jpg

Both routes are installed and load balancing occurs across both paths. The route via Path B is installed because the EIGRP route has the best metric to network 10.2.0.0/16. The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16. The route via Path B is installed because the EIGRP route has the lowest administrative distance to network 10.2.0.0/16. The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.

12. What two routing protocols use a hierarchal network topology? (Choose two.) IS-IS EIGRP OSPF RIPv1RIPv2

13. Refer to the exhibit. Based on the output from the show running-config and debug ip rip commands, what are two of the routes that are added to the routing table of R1? (Choose two.)

R 192.168.1.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/1 R 192.168.100.0/24 [120/1] via 172.16.1.1, 00:00:24, Serial0/0/0 S 192.168.1.0/24 [1/0] via FastEthernet0/0 R 192.168.9.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/0R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0

14. Refer to the exhibit. The network has three connected routers: R1, R2 and R3. The routes of all three routers are displayed. What can be verified from the output?

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wWmIZo2pI/AAAAAAAAAEg/lLHqNzDOHeU/s1600-h/11.jpg

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wXJ2oSDiI/AAAAAAAAAEk/Vb7syqNfeh0/s1600-h/13.jpg

R1 and R3 are connected to each other via the S0/0/0 interface. The IP address of the S0/0/0 interface of R1 is 10.1.1.2. The IP address of the S0/0/1 interface of R2 is 10.3.3.2. R2 is connected to the S0/0/1 interface of R3.

15. Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A?

All of the 192.168.x.0 networks will be in the routing table. Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table. The routing table will be empty because routes and dynamic routes have not been configured. A default route is automatically installed in the routing table to allow connectivity between the networks.

16. Refer to the exhibit. A network administrator is accessing router R1 from the console port. Once the administrator is connected to the router, which password should the administrator enter at the R1> prompt to access the privileged EXEC mode?

Cisco001 Cisco123 Cisco789

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wXrMlUYNI/AAAAAAAAAEs/0oYsg6K4BCY/s1600-h/15.jpg

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wYG6Dx4fI/AAAAAAAAAEw/YK364dK1lWg/s1600-h/16.jpg

Cisco901

17. Which of the following could describe the devices labeled "?" in the graphic? (Choose three.)

DCE CSU/DSU LAN switch modem hub

18. Refer to the exhibit. Which router is advertising subnet 172.16.1.32/28?

Router1 Router2 Router3 Router4

19. Refer to the exhibit. The show cdp neighbors command was run at R1. Which two facts about the newly detected device can be determined from the output? (Choose two.)

ABCD is a router that is connected to R1. ABCD is a non-CISCO device that is connected to R1. The device is connected at the Serial0/0/1 interface of R1. R1 is connected at the S0/0/1 interface of device ABCD. ABCD does not support switching capability.

20. A static route has been configured on a router. However, the destination network no longer exists. What should an administrator do to remove the static route from the routing table? Change the routing metric for that route. Nothing. The static route will go away on its own. Change the administrative distance for that route. Remove the route using the no ip route command.

21. Refer to the exhibit. A ping between host A and host B is successful, but pings from host A to operational hosts on the Internet fail. What is the reason for this problem?

http://3.bp.blogspot.com/_nXUjvBK2YII/S5wYWJcCX4I/AAAAAAAAAE0/fiq5ee7Wx7Q/s1600-h/17.jpg

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wYs2Sa7lI/AAAAAAAAAE4/S_H8zbGIPR4/s1600-h/18.jpg

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wY9o3-09I/AAAAAAAAAE8/2lBy3byA9WM/s1600-h/19.jpg

The FastEthernet interface of R1 is disabled. One of the default routes is configured incorrectly. A routing protocol is not configured on both routers. The default gateway has not been configured on host A.

22. Refer to the exhibit. The network has three connected routers: R1, R2, and R3. The routes of all three routers are displayed. All routers are operational and pings are not blocked on this network.

Which ping will fail?

from R1 to 172.16.1.1 from R1 to 192.168.3.1 from R2 to 192.168.1.1 from R2 to 192.168.3.1

23. Refer to the exhibit. What action will R2 take for a packet that is destined for 192.168.2.0? It will drop the packet.

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wZSPrISGI/AAAAAAAAAFA/KmztFOaiWro/s1600-h/21.jpg

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wZhjgKtRI/AAAAAAAAAFE/KoCGiiweKLU/s1600-h/22.jpg

It will forward the packet via the S0/0/0 interface. It will forward the packet via the Fa0/0 interface. It will forward the packet to R1

24. Refer to the exhibit. The users on the local network 172.16.1.0/24 complain that they are unable to connect to the Internet. What step should be taken to remedy the problem?

A new static route must be configured on R1 with the R3 serial interface as the next hop. A new default route must be configured on R1 with the R3 serial interface as the next hop. The default route on R2 should be configured with the R3 serial interface as the next hop. The default route on R2 must be replaced with a new static route and the next hop should be the R1 FastEthernet interface

25. Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1?

172.16.0.0/8 172.16.0.0/10

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wZ7cVQT4I/AAAAAAAAAFI/sApukwJBv24/s1600-h/23.jpg

http://4.bp.blogspot.com/_nXUjvBK2YII/S5waPq9nZBI/AAAAAAAAAFM/Gq8Qlw-qzyE/s1600-h/24.jpg

http://4.bp.blogspot.com/_nXUjvBK2YII/S5waiMRpVCI/AAAAAAAAAFQ/6ft1X_pvn9w/s1600-h/25.jpg

172.16.0.0/13 172.16.0.0/20 172.16.0.0/24

26. Refer to the exhibit. Host A is unable to access the Internet, and troubleshooting has revealed that this is due to an addressing problem. What is incorrectly configured in this network?

the IP address of the Fa0/0 interface of R1 the subnet mask of the S0/0/0 interface of R1 the IP address of the S0/0/0 interface of R1 the subnet mask of the S0/0/0 interface of R2

27. Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. The PC is not communicating with the network properly. What is the cause?

The default gateway is incorrect. The address is in the wrong subnet. The host address and default gateway are swapped. 192.168.10.31 is the broadcast address for this subnet

28. Refer to the exhibit. The network administrator is planning IP addressing of a new network. What part of this addressing scheme must be changed to allow communication between host A and the server?

the IP address of the server the default gateway of host A the IP address of host A the default gateway of the server

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wauI4J8PI/AAAAAAAAAFU/rUE15m8McHc/s1600-h/26.jpg

http://1.bp.blogspot.com/_nXUjvBK2YII/S5wa6jpl9nI/AAAAAAAAAFY/4hvttOkcQXo/s1600-h/27.jpg

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wbhuH_rzI/AAAAAAAAAFc/vRfqLd1KAo8/s1600-h/28.jpg

29. Which network design feature requires the deployment of a classless routing protocol? private IP addressing advertising default routes variable length subnet masks summarization on major network boundaries

30. A network administrator needs to assign the very last usable IP address in the 172.24.64.0/18 network range to the router interface that serves this LAN. Which IP address should the administrator configure on the interface? 172.16.128.154/18 172.16.255.254/18 172.24.64.254/18 172.24.127.254/18

31. Refer to the exhibit. All routers are running RIPv1. The two networks 10.1.1.0/29 and 10.1.1.16/29 are unable to access each other. What can be the cause of this problem?

Because RIPv1 is a classless protocol, it does not support this access. RIPv1 does not support discontiguous networks. RIPv1 does not support load balancing. RIPv1 does not support automatic summarization.

32. Refer to the exhibit. What information can be determined from the highlighted output?

R1 is originating the route 172.30.200.32/28. Automatic summarization is disabled. The 172.30.200.16/28 network is one hop away from R1. A classful routing protocol is being used

33. What does RIP use to reduce convergence time in a larger network? It uses multicast instead of broadcast to send routing updates. It reduces the update timer to 15 seconds if there are more than 10 routes. It uses triggered updates to announce network changes if they happen in between the periodic updates. It uses random pings to detect if a pathway is down and therefore is preemptive on finding networks that are down

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wb2qG_crI/AAAAAAAAAFg/yJ06qKG5HT8/s1600-h/31.jpg

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wcC2BjjXI/AAAAAAAAAFk/aAhZwH574qg/s1600-h/32.jpg

34. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?

A(config)# router rip A(config-router)# passive-interface S0/0 B(config)# router rip B(config-router)# network 192.168.25.48 B(config-router)# network 192.168.25.64 A(config)# router rip A(config-router)# no network 192.168.25.32 B(config)# router rip B(config-router)# passive-interface S0/0 A(config)# no router rip

35. Refer to the exhibit. Both routers are using the RIP protocol. Devices on the 192.168.1.1 network can ping the S0/0/0 interface on R2 but cannot ping devices on the 192.168.2.1 network.

What is a possible cause of this problem? The routers are configured with different versions of RIP. R2 is not forwarding the routing updates. The R1 configuration should include the no auto-summary command. The maximum path number has been exceeded.

36. Which two statements are correct about the split horizon with poison reverse method of routing loop prevention? (Choose two.) It is enabled by default on all Cisco IOS implementations. It assigns a value that represents an infinite metric to the poisoned route. It sends back the poisoned route update to the same interface from where it was received. It instructs routers to hold all changes that might affect routes, for a specified period of time. It limits the number of hops a packet can traverse through the network before it is discarded

http://4.bp.blogspot.com/_nXUjvBK2YII/S5wcW4bQVuI/AAAAAAAAAFo/k00m-RlYwHg/s1600-h/34.jpg

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wclkI2vzI/AAAAAAAAAFs/6-1er8vIX-0/s1600-h/35.jpg

37. Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.)

Paris(config)# router eigrp 100 Paris(config)# router eigrp Paris(config-router)# network 192.168.6.0 Paris(config-router)# network 192.168.7.0 Paris(config-router)# network 192.168.8.0 Paris(config-router)# network 192.168.9.0

38. A router has EIGRP configured as the only routing protocol. In what way might EIGRP respond if there is no feasible successor route to a destination network and the successor route fails? It broadcasts hello packets to all routers in the network to re-establish neighbor adjacencies. It sends queries to adjacent neighbors until a new successor route is found. It immediately sends its entire routing table to its neighbors. It will set the metric for the failed route to infinity.

39. Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router?

The JAX router has the wrong process ID. The JAX router needs the network 10.0.0.0 0.0.0.255 area 0 command. The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command. The BOS router needs the network 192.168.3.0 0.0.0.255 area 0 command

40. Which three statements describe the operation of routing with EIGRP? (Choose three.) As new neighbors are discovered, entries are placed in a neighbor table. If the feasible successor has a higher advertised cost than the current successor route, then it becomes the primary route. If hello packets are not received within the hold time, DUAL must recalculate the topology. The reported distance is the distance to a destination as advertised by a neighbor. EIGRP maintains full knowledge of the network topology in the topology table and exchanges full routing information with neighboring routers in every update.

http://3.bp.blogspot.com/_nXUjvBK2YII/S5wdA-c4i3I/AAAAAAAAAFw/jeSu9j61R7Q/s1600-h/37.jpg

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wdTnePElI/AAAAAAAAAF0/MrQkDpwo4RI/s1600-h/39.jpg

EIGRP builds one routing table that contains routes for all configured routed protocols.

41. Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing table that is shown?

The packet is discarded. The packet is flooded out all interfaces. The packet is forwarded via Serial0/0/0. The packet is forwarded via FastEthernet0/0.

42. A network is configured with the IP, IPX, and AppleTalk protocols. Which routing protocol is recommended for this network? RIPv1 RIPv2 EIGRP OSPF

43. Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.)

Automatic summarization is disabled. The EIGRP routing protocol is being used. There is one feasible successor in the routing table. The serial interface S0/0/0 is administratively down. The router is originating the route to 172.16.1.0/24 via the S0/0/0 interface

44. Refer to the exhibit. Two routers are unable to establish an adjacency. What is the possible cause for this?

The two routers are connected on a multiaccess network.

http://3.bp.blogspot.com/_nXUjvBK2YII/S5wdzueMs4I/AAAAAAAAAF4/tvULOgzDB_s/s1600-h/41.jpg

http://1.bp.blogspot.com/_nXUjvBK2YII/S5weGPzyTrI/AAAAAAAAAF8/LWdiJ1efX_A/s1600-h/43.jpg

http://3.bp.blogspot.com/_nXUjvBK2YII/S5wefbpQZYI/AAAAAAAAAGA/Ms58gr-AQS8/s1600-h/44.jpg

The hello and dead intervals are different on the two routers. They have different OSPF router IDs. They have different process IDs

45. What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0? R1(config-router)# network 172.16.0.0 0.0.0.255 area 0 R1(config-router)# network 172.16.0.0 0.0.3.255 area 0 R1(config-router)# network 172.16.0.0 0.0.15.255 area 0 R1(config-router)# network 172.16.0.0 0.0.31.255 area 0

46. What should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose two.) OSPF interval timers mismatch administrative distance mismatch interface network type mismatch no loopback interface configured gateway of last resort not redistributed

47. Which two components are used to determine the router ID in the configuration of the OSPF routing process? (Choose two.) the IP address of the first FastEthernet interface the highest IP address of any logical interface the highest IP address of any physical interface the default gateway IP address the priority value of 1 on any physical interface

48. What is the function of the OSPF LSR packet? It is used to confirm the receipt of LSUs. It is used to establish and maintain adjacency with other OSPF routers. It is used by the receiving routers to request more information about any entry in the DBD. It is used to check the database synchronization between routers.

49. Refer to the exhibit. All interfaces are configured with the correct IP addresses and subnet masks. OSPF has been configured as the routing protocol. During troubleshooting, it is determined that hosts on network B can ping the Lo0 interface on R1 but are unable to reach hosts on network A. What is the cause of the problem?

Routers R1 and R2 have incorrect router IDs configured. Router R1 is unable to form a neighbor relationship with router R2. Routers R1 and R2 have been configured in different OSPF areas. The configuration of router R1 fails to include network A in the OSPF routing process

http://2.bp.blogspot.com/_nXUjvBK2YII/S5wfA6ROMvI/AAAAAAAAAGE/01EWJI0GwYk/s1600-h/49.jpg

50. Refer to the exhibit. The interface addresses and OSPF priorities are configured as shown. Because of the boot order of the routers, router A is currently the DR and router B is the BDR. If router A fails and is replaced the next day by a new router, router D, what OSPF protocol action or actions will happen?

Router D will be elected DR, and router C will become the BDR. Router D will be elected DR, and router B will remain the BDR. Router C will become the DR, and router B will become the BDR. Router B will remain the BDR, and OSPF will function on the segment via the use of only the BDR

1. A company is developing an Internet store for its website. Which protocol should be used to transfer credit card information from customers to the company web server? FTPSHTTPHTTPSWEP2TFTP

2. Refer to the exhibit. A new branch office has been added to the corporate network and a new router is to be installed to allow branch office users to access the database server at headquarters. How should the serial 0/0/0 interface of the new branch office router be configured to connect to the headquarters router?branch_23(config-if)# ip address 192.168.5.19 255.255.255.240branch_23(config-if)# no shutdownbranch_23(config-if)# encapsulation hdlcbranch_23(config-if)# ip address 192.168.5.25 255.255.255.240branch_23(config-if)# no shutdownbranch_23(config-if)# encapsulation ppp branch_23(config-if)# no shutdown branch_23(config-if)# encapsulation pppbranch_23(config-if)# ip address 192.168.5.33 255.255.255.240branch_23(config-if)# encapsulation pppbranch_23(config-if)# ip address 192.168.5.21 255.255.255.240branch_23(config-if)# no shutdown

3. Which two commands ensure that any password that permits access to the privileged EXEC mode is not shown in plain text when the configuration files are displayed? (Choose two.)Router(config)# enable secret ciscoRouter(config)# enable ciscoRouter(config)# encryption-password allRouter(config)# enable login encryptedRouter(config)# enable password encryptionRouter(config)# service password-encryption

4. A new network is to be configured on a router. Which of the following tasks must be completed to configure this interface and implement dynamic IP routing for the new network? (Choose three.) Select the routing protocol to be configured.Assign an IP address and subnet mask to the interfaceUpdate the ip host configuration information with the device name and new interface IP address.

http://255.255.255.240/

http://192.168.5.21/

http://255.255.255.240/

http://192.168.5.33/

http://255.255.255.240/

http://192.168.5.25/

http://255.255.255.240/

http://192.168.5.19/

Configure the routing protocol with the new network IP address.Configure the routing protocol with the new interface IP address and subnet mask.Configure the routing protocol in use on all other enterprise routers with the new network information.

5. How does TCP ensure the reliable transfer of data?If data segments are not received from the source, the destination requests that the segments be resent. If an acknowledgment of the transmitted segments is not received from the destination in a predetermined amount of the time, the sourceresends the data.TCP uses the SYN-ACK portion of the three-way handshake to ensure that all data has been received. The TCP Protocol Interpreter process verifies the transmitted data at source and destination.

6. A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task? routable translationdynamic translationstatic translationport address translation

7. What is the most commonly used exterior routing protocol?BGPRIPOSPFEIGRP

8. Refer to the exhibit. The network administrator needs to configure the router with a name. Which command will the administrator use to configure the router name? Router# ip hostname BoiseRouter# enable hostname BoiseRouter(config-line)# name BoiseRouter(config)# hostname BoiseRouter(config)# ip hostname Boise

9. Why are port numbers included in the TCP header of a segment?to indicate the correct router interface that should be used to forward a segmentto identify which switch ports should receive or forward the segmentto determine which Layer 3 protocol should be used to encapsulate the datato enable a receiving host to forward the data to the appropriate applicationto allow the receiving host to assemble the packet in the proper order

10. What is the purpose of the routing process?to encapsulate data that is used to communicate across a networkto select the paths that are used to direct traffic to destination networksto convert a URL name into an IP addressto provide secure Internet file transferto forward traffic on the basis of MAC addresses

11. Which two statements are true about the use of the debug ip rip command on a Cisco router? (Choose two.) The debug ip rip command displays RIP routing activity in real time.The debug ip rip command can be issued at the user EXEC configuration mode.The debug ip rip command displays a combination of the information that is displayed by the show ip route and show ip protocols commands. Because of router processor usage, the debug ip rip command should be used only when necessary. The debug ip rip command should be used instead of the show ip route command whenever possible.

12. What minimum configurations must be set on a host to allow a request to be sent to http://www.cisco.com/? (Choose four.) DNS serverWINS serverIP address

http://www.cisco.com/

NetBIOSsubnet maskdefault gateway

13. A Catalyst 2960 switch has been taken out of storage to be used as a temporary replacement for another switch that needs to be repaired. About a minute after the switch has started, the SYST LED on the front of the switch transitions from blinking green to amber. What is the meaning of the amber SYST LED?The switch has no configuration file in NVRAM.The switch has failed POST and must be sent for service.The switch is functioning properly.The switch is in half-duplex mode.

14. Refer to the exhibit. Which combination of cables and symbols is correct?A - crossover, B - straight-through, C - straight-throughA - crossover, B - rollover, C - straight-throughA - straight-through, B -crossover, C - straight-throughA - straight-through, B -straight-through, C - straight-through A - straight-through, B - straight-through, C - crossoverA - rollover, B - straight-through, C - straight-through

15. After an unsuccessful ping to the local router, the technician decides to investigate the router. The technician observes that the lights and fan on the router are not operational. In which layer of the OSI model is the problem most likely occurring?transportnetworkdata linkphysical

16. What are three characteristics of the TCP protocol? (Choose three.)exchanges datagrams unreliablyis used to send IP error messages forces the retransmission of unacknowledged packetscreates a virtual session between end-user applicationscarries the IP address of the destination host in the TCP headeris responsible for breaking messages into segments and reassembling them at their destination

17. Refer to the exhibit. The network shown is connected using services from the same ISP. How will the Fohi router dynamically learn routes to the 192.168.16.16/28, 192.168.16.32/28, and 192.168.16.64/28 subnetworks?with BGPwith a static routewith a directly connected routewith an interior routing protocol

18. Refer to the exhibit. Which type of UTP cable should be used to connect Host A to Switch1? rolloverconsolecrossoverstraight-through

19. When customers use credit cards to make purchases at a small business, a modem is heard dialing a telephone number to transfer the transaction data to the central office. What type of WAN serial connection is in use?leased linepacket switchedcircuit switchedpoint-to-point

20. A user reports being unable to access the Internet. The help desk technician employs a bottom-up approach to troubleshooting. The technician first has the user check the patch cable connection from the

http://192.168.16.64/28

http://192.168.16.32/28

http://192.168.16.16/28

PC to the wall, and then has the user verify that the NIC has a green link light. What will the technician have the user do next?Enter an IP address into the WWW browser address bar to see if DNS is at fault.Use traceroute to identify the device along the path to the ISP that may be at fault.Verify the IP address, subnet, and gateway settings using ipconfig on the PC .Connect to the user home router to check firewall settings for blocked TCP ports.

21. A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)The router will block the ping request message.The router will reply to the echo request with a proxy ping response.Workstation A will send a UDP ping request message to workstation B.Workstation B will send a UDP ping reply message to workstation A. Workstation A will send an ICMP echo request message to workstation B.Workstation B will send an ICMP echo reply message to workstation A.

22. How does a router know of paths to destination networks? (Choose two.) inspection of the destination IP address in data packetsARP requests from connected routersmanual configuration of routesupdates from other routersDHCP information broadcastsupdates from the SMTP management information base

23. Refer to the exhibit. Which two statements describe the data conversation shown? (Choose two.) The data conversation was started by the HTTP application process running on the client.The data conversation is identified by TCP port 80 on the client.The user started the data conversation by sending an e-mail.The IP address of the Internet server is 192.168.17.43 .The Internet server will send data to port 8547 on the client.

24. What is one purpose of the TCP three-way handshake?sending echo requests from the source to the destination host to establish the presence of the destination determining the IP address of the destination host in preparation for data transferrequesting the destination to transfer a binary file to the source synchronizing sequence numbers between source and destination in preparation for data transfer

25. Which type of address is 192.168.17.111/28?host addressnetwork addressbroadcast addressmulticast address

26. A customer reports connectivity problems to an ISP technician. Upon questioning the customer, the technician discovers that all network applications are functioning except for FTP. What should the technician suspect is the problem?misconfigured firewallbad port on switch or hubmisconfigured IP addressing on the customer's workstationwrong DNS server configured on the customer's workstationwrong default gateway configured on the customer's workstation

27. The show ip route command was executed on one of the routers shown in the graphic and the following output was displayed: C 192.168.4.0/24 is directly connected, Serial0/0R 192.168.5.0/24 [120/1] via 192.168.4.2, 00:00:19, Serial0/0 R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1R 192.168.2.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1C 192.168.3.0/24 is directly connected, Serial0/1

http://192.168.3.0/24

http://192.168.3.1/

http://192.168.2.0/24

http://192.168.3.1/

http://192.168.1.0/24

http://192.168.4.2/

http://192.168.5.0/24

http://192.168.4.0/24

http://192.168.17.111/28

http://192.168.17.43/

http://192.1.1.20/

From which router was this command executed?ABCD

28. Refer to the exhibit. Which two sets of commands are required to configure passwords for all management ports on a Catalyst 2960 switch? (Choose two.) ALSwitch(config)# interface vlan 1ALSwitch(config-if)# password ciscoALSwitch(config-if)# loginALSwitch(config)# line vty 0 4ALSwitch(config-line)# password ciscoALSwitch(config-line)# loginALSwitch(config)# line vty 0 15ALSwitch(config-line)# password ciscoALSwitch(config-line)# loginALSwitch(config)# enable secret classALSwitch(config)# enable password cisco ALSwitch(config)# interface fa0/1ALSwitch(config-if)# password ciscoALSwitch(config-if)# no shutdownALSwitch(config)# line cons 0 ALSwitch(config-line)# password ciscoALSwitch(config-line)# login

29. A user reports being able to access the Internet but not being able to download e-mail from the mail server at the ISP. What should the user check on the user workstation? the POP3 and SMTP server settings in the e-mail applicationthe patch cable connections at the back of the workstation and at the wall platethe DHCP settings in the operating systemthe IP address, mask, and default gateway values the NIC drivers

30. Refer to the graphic. Which command will configure a static route on Router A to direct traffic from LAN A that is destined for LAN C? RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2RouterA(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.3.1RouterA(config)# ip route 192.168.3.2 255.255.255.0 192.168.4.0

31. Which subnet masks could be used when subnetting a Class B IP address? (Choose two.)255.255.255.240255.255.192.0255.255.0.0255.192.0.0240.0.0.0255.0.0.0

32. Refer to the exhibit. The network administrator has configured the RTA and RTB interfaces. In order to allow hosts that are attached to RTA to reach the server that is attached to RTB, a static route from RTA to the server LAN and a default route from RTB back to RTA need to be configured. Which two commands will the administrator use to accomplish these tasks on the two routers? (Choose two.)RTA(config)# ip route 10.16.10.5 255.255.255.252 10.16.10.6RTA(config)# ip route 0.0.0.0 0.0.0.0 10.16.10.6RTA(config)# ip route 10.16.10.96 255.255.255.252 10.16.10.6 RTB(config)# ip route 10.16.10.6 255.255.255.248 10.16.10.6 RTB(config)# ip route 0.0.0.0 0.0.0.0 S0/0/1RTB(config)# ip route 0.0.0.0 0.0.0.0 10.16.10.6

33. How do port filtering and access lists help provide network security?They prevent specified types of traffic from reaching specified network destinations.They alert network administrators to various type of denial of service attacks as they occur.

http://10.16.10.6/

http://0.0.0.0/

http://0.0.0.0/

http://0.0.0.0/

http://0.0.0.0/

http://10.16.10.6/

http://255.255.255.248/

http://10.16.10.6/

http://10.16.10.6/

http://255.255.255.252/

http://10.16.10.96/

http://10.16.10.6/

http://0.0.0.0/

http://0.0.0.0/

http://10.16.10.6/

http://255.255.255.252/

http://10.16.10.5/

http://255.0.0.0/

http://240.0.0.0/

http://255.192.0.0/

http://255.255.0.0/

http://255.255.192.0/

http://255.255.255.240/

http://192.168.4.0/

http://255.255.255.0/

http://192.168.3.2/

http://192.168.3.1/

http://255.255.255.0/

http://192.168.3.0/

http://192.168.3.2/

http://255.255.255.0/

http://192.168.5.0/

http://192.168.3.2/

http://255.255.255.0/

http://192.168.4.0/

http://192.168.5.2/

http://255.255.255.0/

http://192.168.4.0/

They prevent viruses, worms, and Trojans from infecting host computers and servers. They enable encryption and authentication of confidential data communications.

34. Refer to the exhibit. The network administrator of the building in the graphic needs to choose the type of cable best suited to add ServerB to the network. Which cable type is the best choice? STPUTPcoaxialfiber optic

35. What is used by a routing protocol to determine the best path to include in the routing table?Convergence timeDefault distanceMetricType of router

36. Refer to the exhibit. Which IP addresses could be assigned to the hosts in the diagram? (Choose two.) 192.168.65.31192.168.65.32192.168.65.35192.168.65.60192.168.65.63192.168.65.64

37. Given the network 192.168.25.0 shown in the graphic, which subnet mask would accommodate the number of hosts in each subnet?255.255.0.0255.255.224.0255.255.255.0255.255.255.224255.255.255.240255.255.255.248

38. Which two protocols allow network devices to report their status and events to a centralized network management device? (Choose two.) SyslogTelnetHTTPHTTPSSNMP

39. What is true regarding the differences between NAT and PAT?PAT uses the word "overload" at the end of the access-list statement to share a single registered address. Static NAT allows an unregistered address to map to multiple registered addresses.Dynamic NAT allows hosts to receive the same global address each time external access is required.PAT uses unique source port numbers to distinguish between translations.

40. Refer to the exhibit. The graphic shows the output of a command issued on router RTB. According to the output, what two statements are true of router RTB? (Choose two.) The router is connected to a router named Boise.Router RTB is connected to a Cisco 1841 router.Router RTB is directly connected to two other routers.The IP address of the router interface connected to router RTB is 192.168.2.6 .The RTB router is connected to two Cisco devices by Fast Ethernet links.

41. Refer to the exhibit. The network administrator uses the command below to configure a default route to the ISP network : RTB(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.6A ping issued from the ISP is successful to router RTB. However, ping echo request packets arrive at a host that is attached to the Fa0/0 interface of RTB, and the replies do not make it back to the ISP router. What will fix this problem?

http://10.1.1.6/

http://0.0.0.0/

http://0.0.0.0/

http://192.168.2.6/

http://255.255.255.248/

http://255.255.255.240/

http://255.255.255.224/

http://255.255.255.0/

http://255.255.224.0/

http://255.255.0.0/

http://192.168.25.0/

http://192.168.65.64/

http://192.168.65.63/

http://192.168.65.60/

http://192.168.65.35/

http://192.168.65.32/

http://192.168.65.31/

The ISP must be configured to forward packets from the 192.168.1.0 network. The ip route command needs to be edited so that the next hop address is 10.1.1.5.The ip route command needs to be edited so that the 192.168.1.1 address is the next hop address. The ip route command should be removed from the RTB router configuration.

42. A network technician is using a network management station to gather data about the performance of devices and links within the ISP. Which application layer protocol makes this possible? SNMPFTPDHCPSMTP

43. What are two purposes of DNS? (Choose two.)to dynamically assign IP addressing information to network hoststo simplify the administration of host and default gateway addressing on client computersto assign TCP port numbers to hosts as part of the data transfer processto resolve human-readable domain names to numeric IP addressesto replace the static HOSTS file with a more practical dynamic system

44. A hacker attempts to reach confidential information that is stored on a server inside the corporate network. A network security solution inspects the entire packet, determines that it is a threat, and blocks the packet from entering the inside network. Which security measure protected the network?an IDSan IPSa host-based firewallAnti-X software

45. How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?302562046204840944096

46. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another? destination network addresssource network addresssource MAC addresswell known port destination address

47. A small tire retailer requires a low-cost WAN connection to its headquarters in order to manage its inventory and process customer sales in real time. Which WAN connection type is best suited to its needs? SonetT3dialupDSLleased line

48. The command copy tftp running-config has been entered on the router. What will this command do? copy the configuration in RAM to a servercopy the configuration file from a server to RAMcopy the configuration file in NVRAM to RAMcopy the configuration file in NVRAM to a servercopy the configuration file from a server to NVRAM

49. Refer to the exhibit. The network administrator needs to configure the Fa0/0 interface of RTB so that hosts from RTA can connect to the server that is attached to RTB. Which two commands will the administrator use to accomplish this task? (Choose two.)

http://255.255.248.0/

http://130.68.0.0/

http://192.168.1.1/

http://10.1.1.5/

http://192.168.1.0/

RTB# ip address 192.168.102.98 255.255.255.248RTB(config-if)# ip address 192.168.102.99 255.255.255.252RTB(config)# ip address 192.168.102.97 255.255.255.252RTB(config)# no shutdownRTB(config-if)# no shutdownRTB(config-if)# ip address 192.168.102.97 255.255.255.252

50. Refer to the exhibit. A NOC technician at an ISP enters the command shown. What are two reasons to use this command? (Choose two.) to map the path to 192.168.1.7to test reachability to 192.168.1.7 to locate connectivity problems along the route to 192.168.1.7 to identify the ISPs that interconnect the NOC with the remote host with the address 192.168.1.7to measure the time that packets take to reach 192.168.1.7 and return to the technician's

1. If a router cannot find a valid configuration file during the startup sequence, what will occur? • The startup sequence will reset. • The router will prompt the user for a response to enter setup mode. • The startup sequence will halt until a valid configuration file is acquired. • The router will generate a default configuration file based on the last valid configuration. • The router will monitor local traffic to determine routing protocol configuration requirements.

2. Refer to the exhibit. The network administrator has configured the router with the interface IP addresses shown for the directly connected networks. Pings from the router to hosts on the connected networks or pings between router interfaces are not working. What is the most likely problem? • The destination networks do not exist. • The IP addresses on the router interfaces must be configured as network addresses and not host addresses. • The interfaces must be enabled with the no shutdown command. • Each interface must be configured with the clock rate command.

3. Refer to the exhibit. What can be concluded from the routing table output in the exhibit? (Choose two.) • This router only has two interfaces. • The router interfaces are not operational yet. • This router is configured to forward packets to remote networks. • The FastEthernet0/0 and Serial0/0/0 interfaces of this router were configured with an IP address and the no shutdown command. • An IP packet received by this router with a destination address of 198.18.9.1 will be forwarded out of the Serial0/0/0 interface.

4. Refer to the exhibit. The frame shown in the exhibit was received by the router. The router interfaces are operational. How will the router process this frame? (Choose two.) • The router will change the source and destination IP address in the packet before forwarding the frame. • The router will change the frame type to one supported by the WAN link before forwarding the frame. • The router will use the destination MAC address to determine which interface to forward the packet. • The router will look up the MAC address of the S0/0/0 interface in the ARP table and add it to the frame before forwarding. • The frame was received on the Fa0/0 interface of the router and will be switched to the S0/0/0 interface. • The frame was received on the S0/0/0 interface of the router and will be switched to the Fa0/0 interface.

5. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.) • VTY interface • console interface • Ethernet interface • secret EXEC mode • privileged EXEC mode • router configuration mode

6. Which two statements correctly describe the components of a router? (Choose two.) • RAM permanently stores the configuration file used during the boot sequence. • ROM contains diagnostics executed on hardware modules. • NVRAM stores a backup copy of the IOS used during the boot sequence. • Flash memory does not lose its contents during a reboot. • ROM contains the most current and most complete version of the IOS. • Flash contains boot system commands to identify the location of the IOS

http://192.168.1.7/

http://192.168.1.7/

http://192.168.1.7/

http://192.168.1.7/

http://192.168.1.7/

http://255.255.255.252/

http://192.168.102.97/

http://255.255.255.252/

http://192.168.102.97/

http://255.255.255.252/

http://192.168.102.99/

http://255.255.255.248/

http://192.168.102.98/

7.Refer to the exhibit. After host 2 is connected to the switch on the LAN, host 2 is unable to communicate with host 1. What is the cause of this problem? • The subnet mask of host 2 is incorrect. • Host 1 and host 2 are on different networks. • The switch needs an IP address that is not configured. • The router LAN interface and host 1 are on different networks. • The IP address of host 1 is on a different network than is the LAN interface of the router.

8. Which are functions of a router? (Choose three.) • packet switching • extension of network segments • segmentation of broadcast domains • selection of best path based on logical addressing • election of best path based on physical addressing

9. Refer to the exhibit. All routers have a route in its routing table to each network that is shown in the exhibit. Default routes have not been issued on these routers. What can be concluded about how packets are forwarded in this network? (Choose two.)

• If RouterC receives a packet that is destined for 10.5.1.1, it will be forwarded out interface Fa0/0. • If RouterA receives a packet that is destined for 192.168.3.146, it will be forwarded out interface S0/0/1. • If RouterB receives a packet that is destined for 10.5.27.15, it will be forwarded out interface S0/0/1. • If RouterB receives a packet that is destined for 172.20.255.1, it will be forwarded out interface S0/0/0. • If RouterC receives a packet that is destined for 192.16.5.101, it will be forwarded out interface S0/0/1.

10. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.) • Sydney(config-if)# ip address 201.100.53.2 255.255.255.0 • Sydney(config-if)# no shutdown • Sydney(config-if)# ip address 201.100.53.1 255.255.255.224 • Sydney(config-if)# clock rate 56000 • Sydney(config-if)# ip host Melbourne 201.100.53.2

11. Rfer to the exhibit. What can be concluded from the output of the running-configuration of a router? • The passwords are encrypted. • The current configuration was saved to NVRAM. • The configuration that is shown will be the one used on the next reboot. • The commands that are displayed determine the current operation of the router.

12. Refer to the exhibit. Host A pings host B. When R4 accepts the ping into the Ethernet interface, what two pieces of header information are included? (Choose two.) • source IP address: 192.168.10.129 • source IP address: BBBB.3333.5677 • destination IP address: 192.168.10.33 • destination IP address: 192.168.10.134 • destination MAC address: 9999.DADC.1234

13. What is the outcome of entering these commands? • R1(config)# line vty 0 4 • R1(config-line)# password check123 • R1(config-line)# login • ensures that a password is entered before entering user EXEC mode • sets the password to be used for connecting to this router via Telnet • requires check123 to be entered before the configuration can be saved • creates a local user account for logging in to a router or switch

14. Which of the following is the correct flow of routines for a router startup? • load bootstrap, load IOS, apply configuration • load bootstrap, apply configuration, load IOS • load IOS, load bootstrap, apply configuration, check hardware • check hardware, apply configuration, load bootstrap, load IOS

15. What three processes does a router execute when it receives a packet from one network that is destined for another network? (Choose three.) • decapsulates the Layer 3 packet by stripping off the Layer 2 frame header • uses the destination MAC Address in the IP Header to look up the next-hop address in the routing table • leaves the Layer 2 frame header intact when decapsulating the Layer 3 packet

• uses the destination IP Address in the IP header to look up the next-hop address in the routing table • encapsulates the Layer 3 packet into the new Layer 2 frame and forwards it out the exit interface • encapsulates the Layer 3 packet into a special Layer 1 frame and forwards it to the exit interface

16. The network administrator needs to connect two routers directly via their FastEthernet ports. What cable should the network administrator use? • straight-through • rollover • cross-over • serial

17. Which two statements describe characteristics of load balancing? (Choose two.) • Load balancing occurs when a router sends the same packet to different destination networks. Load balancing occurs when a router sends the same packet to different destination networks. • Load balancing allows a router to forward packets over multiple paths to the same destination network. • Unequal cost load balancing is supported by EIGRP. • If multiple paths with different metrics to a destinations exist, the router cannot support load balancing.

18. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.) • the last restart method • the command buffer contents • the amount of NVRAM and FLASH used • the configuration register settings • the location from where the IOS loaded

19. Which interfaces in the exhibit could be used for a leased line WAN connection? (Choose two.) • 1 • 2 • 3 • 4 • 5 • 6

20. From what location can a router load the Cisco IOS during the boot process? (Choose two.) • RAM • TFTP server • NVRAM • setup routine • Flash memory • terminal

21. A network administrator has just entered new configurations into Router1. Which command should be executed to save configuration changes to NVRAM? • Router1# copy running-config flash • Router1(config)# copy running-config flash • Router1# copy running-config startup-config • Router1(config)# copy running-config startup-config • Router1# copy startup-config running-config • Router1(config)# copy startup-config running-config

22. What is the default sequence for loading the configuration file? • NVRAM, FLASH, ROM • FLASH, TFTP,CONSOLE • NVRAM, TFTP, CONSOLE • FLASH, TFTP, ROM

23. What header address information does a router change in the information it receives from an attached Ethernet interface before information is transmitted out another interface? • only the Layer 2 source address • only the Layer 2 destination address • only the Layer 3 source address • only the Layer 3 destination address • the Layer 2 source and destination address • the Layer 3 source and destination address

1. A static route that points to the next hop IP will have what administrative distance and metric in the routing table? • administrative distance of 0 and metric of 0 • administrative distance of 0 and metric of 1 • administrative distance of 1 and metric of 0 • administrative distance of 1 and metric of 1

2. What address can be used to summarize networks 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24, and 172.16.4.0/24? • 172.16.0.0/21 • 172.16.1.0/22 • 172.16.0.0 255.255.255.248 • 172.16.0.0 255.255.252.0

3. The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud? • 192.1.1.0/26 and 192.1.1.64/27 • 192.1.1.128/25 • 192.1.1.0/23 and 192.1.1.64/23 • 192.1.1.0/24 • 192.1.1.0/25 • 192.1.1.0/24 and 192.1.1.64/24

4. Refer to the exhibit. What is the significance of the /8 in the route to the 10.0.0.0 network? • It indicates that there are 8 hops between this router and the 10.0.0.0 network. • It represents the time, in milliseconds, it takes for a ping to reply when sent to the 10.0.0.0 network. • It indicates that there are 8 subnets in the destination network to which the router can forward packets. • It indicates the number of consecutive bits, from the left, in the destination IP address of a packet that must match 10.0.0.0 to use that route.

5. Refer to the exhibit. How will packets destined to the 172.16.0.0 network be forwarded? • Router1 will perform recursive lookup and packet will exit S0/0. • Router1 will perform recursive lookup and packet will exit S0/1. • There is no matching interface associated with network 172.16.0.0 so packets will be dropped. • There is no matching interface associated with network 172.16.0.0 so packets will take gateway of last resort and exit out S0/2.

6. A network administrator enters the following command into Router1: ip route 192.168.0.0 255.255.255.0 S0/1/0. Router1 then receives a packet that is destined for 192.168.0.22/24. After finding the recently configured static route in the routing table, what does Router1 do next to process the packet? • drops the packet because the destination host is not listed in the routing table • looks up the MAC address of the S0/1/0 interface to determine the destination MAC address of the new frame • performs a recursive lookup for the IP address of the S0/1/0 interface before forwarding the packet • encapsulates the packet into a frame for the WAN link and forwards the packet out the S0/1/0 interface

7. Refer to the exhibit. Given the output in the exhibit, how would a clock rate be determined for this link? • The rate would be negotiated by both routers. • A rate would not be selected due to the DCE/DTE connection mismatch. • The rate configured on the DTE determines the clock rate. • The rate configured on the DCE determines the clock rate.

8. Refer to the exhibit. Which set of commands will configure static routes that will allow the WinterPark and the Altamonte routers to deliver packets from each LAN and direct all other traffic to the Internet? • WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/1 • WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 198.18.222.0 255.255.255.255 s0/1 • WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1 • WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 • WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1 Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/0

9. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.) • ping

• show arp • traceroute • show ip route • show interface • show cdp neighbor detail

10. Refer to the exhibit. A company network engineer is assigned to establish connectivity between the two Ethernet networks so that hosts on the 10.1.1.0/24 subnet can contact hosts on the 10.1.2.0/24 subnet. The engineer has been told to use only static routing for these company routers. Which set of commands will establish connectivity between the two Ethernet networks?

• R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 • R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2 R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1 • R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 • R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1 R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2 • R1(config)# ip route 0.0.0.0 0.0.0.0 10.1.2.1 R2(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.1

11. Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.) • load • platform • reliability • holdtime • local interface

12. Refer to the exhibit. What two commands are required to provide connectivity between the 192.168.1.0 and 10.0.0.0 networks without requiring recursive lookup? (Choose two.) • A(config)# ip route 10.0.0.0 255.0.0.0 s 0/1/0 • A(config)# ip route 10.0.0.0 255.0.0.0 172.16.40.2 • A (config)# ip route 10.0.0.0 255.0.0.0 s 0/0/0 • B(config)# ip route 192.168.1.0 255.255.255.0 s 0/0/0 • B (config)# ip route 192.168.1.0 255.255.255.0 172.16.40.1 • B(config)# ip route 192.168.1.0 255.255.255.0 s 0/1/0

13. Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.) • A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2 • A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2 • A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2 • A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0 • A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2

14. What happens to a static route entry in a routing table when the outgoing interface is not available? • The route is removed from the table. • The router polls neighbors for a replacement route. • The route remains in the table because it was defined as static. • The router redirects the static route to compensate for the loss of the next hop device.

15. A router has one static route to each destination network. Which two scenarios would require an administrator to alter the static routes that are configured on that router? (Choose two.) • The destination network no longer exists. • The destination network is moved to a different interface on the same router. • The path between the source and destination is upgraded with a higher bandwidth link. • A topology change occurs where the existing next-hop address or exit interface is not accessible. • The remote destination network interface has to be down for 15 minutes of maintenance.

16. Why is it advisable to enter a next-hop IP address when creating a static route whose exit interface is an Ethernet network? • Adding the next-hop address eliminates the need for the router to do any lookups in the routing table before forwarding a packet. • In a multi-access network, the router cannot determine the next-hop MAC address for the Ethernet frame without a next-hop address. • Using a next-hop address in a static route provides a route with a lower metric. • In multi-access networks, using a next-hop address in a static route makes that route a candidate default route.

17. The output of the Router# show interfaces serial 0/1 command displays the following: • Serial0/1 is up, line protocol is down. • What is the most likely cause for the line protocol being down? • Serial0/1 is shutdown. • There is no cable connecting the routers. • The remote router is using serial 0/0. • No clock rate has been set.

18. Refer to the exhibit. Which static route should be configured on Router1 so that host A will be able to reach host B on the 172.16.0.0 network? • ip route 192.168.0.0 172.16.0.0 255.255.0.0 • ip route 172.16.0.0 255.255.0.0 192.168.0.1 • ip route 172.16.0.0 255.255.0.0 S0/0/1 • ip route 172.16.0.0 255.255.0.0 S0/0/0

19. What two devices are responsible for converting the data from the WAN service provider into a form acceptable by the router? (Choose two). • the serial port of the router • a modem • a switch • the ethernet port of the router • a CSU/DSU device • a DTE device

20. Which of the following is true regarding CDP and the graphic shown? • CDP running on Router D will gather information about routers A, B, C, and E. • By default, Router A will receive CDP advertisements from routers B and C. • If routers D and E are running different routing protocols, they will not exchange CDP information. • Router E can use CDP to identify the IOS running on Router B.

21. Which two statements describe functions or characteristics of CDP? (Choose two.) • It starts up automatically and allows the device to detect directly connected neighbor devices that use CDP. • It operates at the network layer and allows two systems to learn about each other. • It creates a topology map of the entire network. • It allows systems to learn about each other even if different network layer protocols are configured. • It forwards advertisements about routes for faster convergence.

22. Which piece of information is available from examining the output of the command show ip interface brief? • Interface speed and duplex • Interface MTU • Errors • Interface MAC address • Interface IP address

1. Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.) • Administrative distance refers to the trustworthiness of a particular route. • Routes with the smallest metric to a destination indicate the best path.

2. Refer to the exhibit. Which statement correctly describes how R1 will determine the best path to R2? • R1 will install an EIGRP route using network B in its routing table because the administrative distance of EIGRP is lower than RIP.

3. Which two statements are true regarding classless routing protocols? (Choose two.) • sends subnet mask information in routing updates • allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology

4. Which command would the network administrator issue to determine if load balancing is in effect on a router? • show ip route

5. Which statement is true regarding routing protocols? • EIGRP uses DUAL to calculate the shortest path and can be configured to do unequal cost load balancing.

6. Which two conditions would create a setting where the use of a distance-vector routing protocol would be efficient? (Choose two.) • the network is using a hub and spoke topology

• the network is using a flat design

7. What is the purpose of a routing protocol? • It allows a router to share information about known networks with other routers.

8. Which of the following best describes the operation of distance vector routing protocols? • hey send their routing tables to directly connected neighbors.

9. Which of the following is associated with link-state routing protocols? • shortest-path first calculations

10. Why is fast convergence desirable in networks that use dynamic routing protocols? • Routers may make incorrect forwarding decisions until the network has converged.

11. Which of the following conditions must be met in order for a network to have converged • The routers in the network are operating with consistent routing knowledge.

12. Which two statements are true regarding metrics? (Choose two.) • EIGRP uses bandwidth as a metric. • OSPF uses cost based on bandwidth as a metric.

13. Which two statements are true regarding the advantages of the use of static routes? (Choose two). • increased security • the administrator maintains control over routing

14. The following line of code is displayed in a routing table: R 209.165.201.0/24 [120/2] via 192.168.252.2, 00:00:16, S0/0/0 What can be concluded from this output? • The value, 120, is used to determine the best path when a router has more than one routing protocol configured for the same destination network.

15. What will be the result of the following commands? ORL(config)# interface fastethernet 0/0 ORL(config-if)# ip address 172.16.3.1 255.255.255.0 ORL(config-if)# no shutdown • A routing table entry is made to the 172.16.3.0 network with a code of "C".

16. An engineer creates a static route by entering the Router(config)# ip route 10.0.0.0 255.255.255.0 192.168.1.2 command. What can be concluded about this route? • The administrative distance of this route is 1.

17. Refer to the exhibit. Router1 and Router2 are running EIGRP. All interfaces are operational and packets can be forwarded between all networks. What information will be found in the routing table for Router1? • The administrative distance of the route to network 172.16.0.0 will be 90.

18. The following line of code is present in the routing table: O 10.16.1.0/27 [110/129] via 192.168.1.5, 00:00:05, Serial0/0/1 What does the number 129 indicate in this output? • The cost for this link has a value of 129.

19. A growing medium-sized manufacturing company recently began to have routing instability issues. The company uses static routes and has a mixture of over 30 Cisco and non-Cisco routers. The network administrator has decided to convert the network to dynamic routing. What characteristics of protocols should be considered in this selection process? • OSPF can be used between the routers.

20. Refer to the exhibit. If RIP is the routing protocol, what is the value of the metric from router A to network 192.168.5.0/24? • 3

21. A router learns two paths with equal metrics to a destination network via the RIP routing protocol. How will the router handle packets to the destination network? • The router will install both routes in the routing table and load balance between the two.

1. Which event will cause a triggered update? • a route is installed in the routing table

2. Three routers running a distance-vector routing protocol lost all power, including the battery backups. When the routers

reload, what will happen? • They will send updates that include only directly connected routes to their directly connected neighbors.

3. What does the RIP holddown timer do? • instructs routers to ignore updates, for a specified time or event, about possible inaccessible routes

4. Which two statements are true regarding the function of the RIPv1 routing updates? (Choose two). • updates are broadcast at regular intervals • broadcasts are sent to 255.255.255.255

5. Which of the following statements are correct about RIP? • will send out an update if there is a failure of a link

6. Which two statements describe EIGRP? (Choose two.) • EIGRP sends triggered updates whenever there is a change in topology that influences the routing information. • EIGRP sends a partial routing table update, which includes just routes that have been changed.

7. Which statement is true regarding cisco's RIP_JITTER variable? • It prevents the synchronization of routing updates by subtracting a random length of time ranging from 0% to 15% of the specified interval time from the next routing update interval.

8. What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.) • RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA. • Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB

9. Which of the following methods does split horizon use to reduce incorrect routing information? • Information learned from one source is not distributed back to that source.

10. The graphic shows a network that is configured to use RIP routing protocol. Router2 detects that the link to Router1 has gone down. It then advertises the network for this link with a hop count metric of 16. Which routing loop prevention mechanism is in effect? • route poisoning

11. What is the purpose of the TTL field in the IP header? • limits the time or hops that a packet can traverse through the network before it should be discarded

12. Which of the following can exist in a distance vector network that has not converged? (Choose three.) • routing loops • inconsistent traffic forwarding • inconsistent routing table entries

13. Refer to the exhibit. The routers in this network are running RIP. Router A has not received an update from Router B in over three minutes. How will Router A respond? • The Invalid timer will mark the route as unusable if an update has not been received in 180 seconds.

14. A network administrator is evaluating RIP versus EIGRP for a new network. The network will be sensitive to congestion and must respond quickly to topology changes. What are two good reasons to choose EIGRP instead of RIP in this case? (Choose two.) • EIGRP only updates affected neighbors. • EIGRP updates are partial.

15. Refer to the exhibit. What path will packets from the 192.168.1.0/24 network travel to reach the 10.0.0.0/8 network if RIP is the active routing protocol? • The path will be router A -> router D -> router E.

16. Which three routing protocols are distance vector routing protocols? (Choose three). • RIPv1 • EIGRP • RIPv2

17. What is a routing loop? • a condition where a packet is constantly transmitted within a series of routers without ever reaching its intended destination

18. Which two conditions are most likely to cause a routing loop? (Choose two.) • inconsistent routing tables • incorrectly configured static routes

19. What metric does the RIP routing protocol consider to be infinity? • 16

20. What does a router running RIP do first with a new route that is received from an advertisement? • adjusts the metric for the new route to show the added distance for the route

21. Refer to the exhibit. If all routers are using RIP, how many rounds of updates will occur before all routers know all networks? • 3

1. Refer to the exhibit. The network that is shown is running RIPv1. The 192.168.10.0/24 network was recently added and will only contain end users. What command or set of commands should be entered on Router1 to prevent RIPv1 updates from being sent to the end user devices on the new network while still allowing this new network to be advertised to other routers? • Router1(config-router)# no network 192.168.10.0

2. The following line was displayed in the output of the show ip route command. R 192.168.3.0/24 [120/3] via 192.168.2.2, 00:00:30, Serial0/0 What is the value of the routing metric? • 3

3. Which of the following is considered a limitation of RIP v1? • RIP v1 does not send subnet mask information in its updates.

4. Refer to the exhibit. The Ethernet interface on Router2 goes down and the administrator notices that the route is still in the Router1 routing table. How much longer will Router1 keep the down network in its routing table before marking it as possibly down? • 155 seconds

5. Refer to the exhibit. Router1 is running RIPv1. What command was entered into Router1 to configure the gateway of last resort? • ip route 0.0.0.0 0.0.0.0 S0/0/1

6. What are three characteristics of the RIPv1 routing protocol? (Choose three.) • uses hop count as a metric • considers a metric of 16 as infinity • calculates metrics using the Bellman Ford algorithm

7. Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks? • RouterB(config)# router rip RouterB(config-router)# network 198.16.4.0 RouterB(config-router)# network 210.36.7.0 RouterB(config-router)# network 220.17.29.0

8. What is the default update period in seconds for the RIP routing protocol? • 30

9. Refer to the exhibit. What can be concluded from the routing table output of router B? • The default-information originate command has been entered on A.

10. Refer to the exhibit. A network consists of multiple routers. What can be verified when the show ip protocols command is issued on one of the routers in the network? • routing protocol configuration in use for IP on this router

11. Refer to the exhibit. All routers are configured with valid interface addresses in the indicated networks and are running RIPv1. The network is converged. Which routes are present in the routing tables? • All routers have all /30 routes. Routers A and E also have some of the /24 routes in their routing table.

12. Which two statements are true regarding the characteristics of RIPv1? (Choose two). • It is a distance vector routing protocol. • The data portion of a RIP message is encapsulated into a UDP segment.

13. Which command or set of commands will stop the RIP routing process? • RouterB(config)# no router rip

14. Refer to the exhibit. All routers in the exhibit are running RIP v1. The network administrator issues the show ip route command on router A. What routes would appear in the routing table output if the network is converged? (Choose two).

• R 192.168.2.0/24 [120/1] • R 10.10.1.0/24 [120/2]

15. Which command will display RIP activity as it occurs on a router? • debug ip rip

16. Refer to the output from the show ip route command. What can be concluded from the output of this router command? • There are two equal cost paths to network 1.0.0.0.

17. Refer to the exhibit. Router1 and Router2 are running the RIPv1 protocol. The network administrator configures the command network 10.1.0.0 on Router1. What network will Router1 advertise to Router2? • 10.0.0.0/8

18. Refer to the exhibit. Pings between the serial interfaces of the routers are successful. Hosts on each LAN can ping the Fa0/0 interface of the router to which they are directly connected through the switch. However, pings between hosts on the 10.1.1.0/24 and 10.1.2.0/24 networks are unsuccessful. What is a likely cause of this problem? • RIP is configured incorrectly on R1.

19. What will happen if an interface IP address is entered for the address portion of the network command in a RIPv1 configuration instead of a network address? • All interfaces in the same classful network as the configured address will be included in the RIPv1 routing process.

20. Refer to the exhibit. All routers that are shown are running the RIP routing protocol. All unknown IP traffic must be forwarded to the ISP. What router or set of routers are recommended to have both a default route and the default-information originate command issued to implement this forwarding policy? • only the gateway router

1. What two advantages does CIDR provide to a network? (Choose two.) • reduced routing table size • reduced routing update traffic

2. Refer to the exhibit. Which address is a broadcast address for one of the subnets that are shown in the exhibit? • 192.168.4.15/29

3. In the network shown in the graphic, three bits were borrowed from the host portion of a Class C address. How many valid host addresses will be unused on the three point-to-point links combined if VLSM is not used? • 84

4. Which of the following are contained in the routing updates of classless routing protocols? (Choose two.) • 32-bit address • Subnet mask

5. Refer to the exhibit. The network administrator wants to create a subnet for the point-to-point connection between the two routers. Which subnetwork mask would provide enough addresses for the point-to-point link with the least number of wasted addresses? • 255.255.255.252

6. What does VLSM allow a network administrator to do? • utilize multiple subnet masks in the same IP address space

7. Which three interior routing protocols support VLSM? (Choose three.) • OSPF • RIP v2 • EIGRP

8. Which of the following problems does VLSM help to alleviate? • the shortage of IP addresses

9. Refer to the exhibit. A network technician enters the static route in R1 needed to reach network 10.1.1.0/24. A ping from the S0/0/0 interface on R1 to host B fails. The technician begins testing the network and has the following results: 1. pings from R1 to the S0/0/0 interface on R2....successful 2. pings from R1 to the Fa0/0 interface on R2....successful 3. pings from host B to hosts on the 10.1.1.0/24 network....successful 4. pings from host B to the Fa0/0 interface on R2....successful 5. pings from R2 to host B....successful.

What is the likely cause of the failure of the ping from R1 to host B? • The default gateway on host B is not correctly set.

10. A network administrator is tasked with dividing up a class C network among the QA, Sales, and Administration departments. The QA department is made up of 10 people, the Sales is made up of 28 people, and the Administration has 6. Which two subnets masks adequately address the QA and Sales departments? (Choose two.) • 255.255.255.224 for Sales • 255.255.255.240 for QA

11. Refer to the exhibit. A network engineer is summarizing the two groups of routes on router R1 shown in the exhibit. Which summarization will work for all the subnets? • 192.168.0.0/21

12. A Class C address has been assigned for use in the network shown in the graphic. Using VLSM, which bit mask should be used to provide for the number of host addresses required on Router A, while wasting the fewest addresses? • /27

13. Refer to the exhibit. In the network that is shown, the router interfaces are assigned the first address in each subnet. Which IP address would be usable for a host on one of the LANs in this network? • 192.168.2.130/25

14. Refer to the exhibit. What subnet mask will be applied if Router A sends a RIPv1 update for the network 172.16.1.0 to Router B? • 24

15. Refer to the exhibit. The number of required host addresses for each subnet in a network is listed in the exhibit. This number includes the host address requirements for all router ports and hosts on that subnet. After all device and router port address assignments are determined, what will be the total number of unused host addresses available? • 29

16. An additional subnet is required for a new Ethernet link between Router1 and Router2 as shown in the diagram. Which of the following subnet addresses can be configured in this network to provide a maximum of 14 useable addresses for this link while wasting the fewest addresses? • 192.1.1.224/28

17. What is a supernet? • a summarization of classful addresses

18. Refer to the exhibit. A network administrator needs to create two subnetworks from 10.0.0.0/8 for a router running RIPv2. The Admin subnet requires 120 hosts and the Sales subnet requires 58 hosts. The network administrator assigned 10.0.1.128/25 to the Admin subnet. The Sales subnet is given 10.0.1.192/26. What will be the result of this addressing scheme? • The subnets overlap and will be rejected by the router.

19. A router has a summary route to network 192.168.32.0/20 installed in its routing table. What range of networks are summarized by this route? • 192.168.32.0 – 192.168.47.0/24

20. Refer to the exhibit. The network administrator wants to minimize the number of entries in Router1’s routing table. What should the administrator implement on the network? • CIDR

1. A network administrator has been told that the company IP address infrastructure must adhere to RFC 1918. What three IP address ranges from RFC 1918 could the administrator use on the network? (Choose three.) • 10.0.0.0/8 • 172.16.0.0/12 • 192.168.0.0/16

2. Refer to the exhibit. Routers East and West are configured using RIPv1. Both routers are sending updates about their directly connected routes. The East router can ping the West router serial interface and West can ping the serial interface of East. However, neither router has dynamically learned routes from the other. What is most likely the problem? • VLSM is not supported by RIPv1.

3. Refer to the exhibit. What effect will the commands that are shown have on RIP updates for Router1? • Only version 2 updates are sent to 224.0.0.9.

4. Refer to the exhibit. What can be concluded from the output shown in the exhibit? • The no auto-summary has not been configured on this router.

5. What are two reasons to implement RIP version 2 rather than RIP version 1? (Choose two.) • RIP version 2 supports VLSM. • RIP version 2 supports routing update authentication.

6. Refer to the exhibit. RIPv1 is configured as the routing protocol for the network that is shown. The following commands are used on each router: • router rip network 10.0.0.0 network 172.16.0.0

7. A network administrator installed four new routers that are running RIPv2. Router1 is a boundary router in the RIPv2 network and has a default route configured. Once the network has converged, the network administrator enters Router1(config-router)# default-information originate on Router1. How will this affect the network? • propagates the default route to all routers in the network

8. Refer to the exhibit. A technician needs to add a new loopback interface to test routing functionality and network design. The technician enters the following set of commands on the router: Sanford(config)# interface loopback1 Sanford(config-if)# ip address 192.168.6.62 255.255.255.252 • The network address for Loopback1 overlaps with an already configured interface address.

9. What is the maximum network diameter permitted by the default metric of RIPv2? • 15 hops

10. What are two functions of the network command used when configuring routing protocols? (Choose two.) • identifies which networks will be included in the routing updates • determines which interfaces can send and receive routing updates

11. Refer to the exhibit. All routers are running RIPv1. What changes will occur in the routing table of router B if a loopback interface with an address of 10.16.1.129/27 is configured on router B? • A connected route to the 10.16.1.128/27 network is added.

12. Refer to the exhibit. If all routers are running RIP version 2, why is there no route for the 192.168.1.32/27 network? • Rip version 2 will auto summarize routes by default.

13. RIPv2 is the configured routing protocol on the routers in a network. The command Router(config-router)# no version 2 is entered on the routers. What effect does entering this command have on routing updates? • Version 1 and 2 updates will be received and the version 2 updates will not be sent.

14. How are RIP v1 and RIP v2 similar to one another? (Choose three.) • They both use hop count as a metric. • They both have the same metric value for infinite distance. • They both use split horizon to prevent routing loops.

15. Refer to the exhibit. The exhibited network contains a mixture of Cisco and non-Cisco routers. The command debug ip rip was entered on the JAX router. All routers are running the same version of RIP. Router CHI and Router ORL are not able to reach the 192.168.1.16/28 network. What is a possible solution to this problem? • Configure RIPv2 on routers.

16. What field was added to the RIP message header by RFC 1723 to add support for VLSM and CIDR? • Subnet mask

17. Refer to the exhibit. Which command on which router will allow Router1 to learn about the 192.168.0.0/20 network? • Router2(config-router)# version 2

18. Refer to the exhibit. Which two statements are true? (Choose two.) • Router1 will install a route to 192.168.0.0/20 • Router2 will not install a route to 192.168.16.0/20

19. Refer to the exhibit. All routers are running RIP version 2. JAX is configured to just advertise the 10.0.0.0/24 network. CHI is configured to advertise the 172.16.0.0/16 network. A network administrator enters the commands shown in the exhibit. What changes will occur in this network?

• The CHI router will install a route to the 192.168.0.0/16 network in its routing table.

20. Refer to the exhibit. Which command will allow Router2 to learn about the 192.168.16.0/28 network? • Router1(config-router)# network 192.168.16.0

21. When this configuration is complete, users on the LAN of each router are unable to access the remote LANs. Why? • RIPv1 is unable to route to discontiguous subnets of a major network.

ccna2 - rounting protocols and concepts

Documents