What are three characteristics of CSMA/CD? (Choose three.)1. A device listens and waits until the media is not busy before transmitting.

2. All of the devices on a segment see data that passes on the network medium.

3. After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?gateway of last resortAn organization is assigned an IPv6 address block of 2001:db8:0:ca00::/56. How many subnets can be created without using bits in the interface ID space?256Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Which code is displayed on the web browser?It works!Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)1. The UDP destination port number identifies the application or service on the server which will handle the data.

2. UDP segments are encapsulated within IP packets for transport across the network.

3. The source port field identifies the running application or service that will handle data returning to the PC.What are two actions performed by a Cisco switch? (Choose two.)1. using the source MAC addresses of frames to build and maintain a MAC address table

2. utilizing the MAC address table to forward frames via the destination MAC addressA network administrator is issuing the login block-for 180 attempts 2 within 30 command on a router. Which threat is the network administrator trying to prevent?a user who is trying to guess a password to access the routerHow will a router handle static routing differently if Cisco Express Forwarding is disabled?Ethernet multiaccess interfaces will require fully specified static routes to avoid routing inconsistencies.A network administrator is designing an IPv4 addressing scheme and requires these subnets.

1 subnet of 100 hosts2 subnets of 80 hosts2 subnets of 30 hosts4 subnets of 20 hosts

Which combination of subnets and masks will provide the best addressing plan for these requirements?3 subnets of 126 hosts with a 255.255.255.128 mask6 subnets of 30 hosts with a 255.255.255.224 maskMatch the description to the various trunking modes for Cisco 2960 Catalyst switches. Not all options are used.

A. The interface becomes a nontrunk interface regardless of whether the neighboring interface is a trunk interface.

B. The interface becomes a trunk interface if the neighboring interface is set to trunk or desirable mode.

C. The interface becomes a trunk interface even if the neighboring interface is not a trunk interface.1. switchport nonegotiate

2. switchport mode trunk - C

3. switchport mode dynamic desirable

4. switchport mode dynamic auto - B

5. switchport mode access - AHow many /30 subnets can be created from one /27 subnet?8Which layer of the OSI model handles the process of identifying and discarding damaged frames?data linkRefer to the exhibit. Which password will the administrator need to use on this device to enter privileged EXEC mode?ciscoIn which memory location are the VLAN configurations of normal range VLANs stored on a Catalyst switch?flashA user calls the help desk to report that a Windows XP workstation is unable to connect to the network after startup and that a popup window says "This connection has limited or no connectivity." The technician asks the user to issue the ipconfig /all command. The user reports the IP address is 169.254.69.196 with subnet mask of 255.255.0.0 and nothing is displayed for the DNS server IP address. What is the cause of the problem?The workstation is unable to obtain an IP address from a DHCP server.What will be the result of adding the command ip dhcp excluded-address 172.16.4.1 172.16.4.5 to the configuration of a local router that has been configured as a DHCP server?The DHCP server function of the router will not issue the addresses from 172.16.4.1 through 172.16.4.5 inclusive.Refer to the exhibit. After the configuration that is shown in the exhibit is applied to the SVI, the switch fails to respond to Telnet attempts from a host in the same subnet. What is the cause of the problem?The interface is administratively down.Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all targets are used.)

A. Packets with a destination of 172.17.10.5

B. Packets with a destination of 172.17.12.10

C. Packets with a destination of 172.17.14.8

D. Packets with a destination of 172.17.8.20

E. Packets with a destination of 172.17.6.151. FastEthernet0/0 - E

2. FastEthernet0/1 - C

3. FastEthernet1/0 - B

4. FastEthernet1/1 - A

5. Serial0/0/0 - D

6. The packet is dropped.A network administrator is using the router-on-a-stick model to configure a switch and a router for inter-VLAN routing. What configuration should be made on the switch port that connects to the router?Configure the port as an 802.1q trunk port.Which three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)1. When the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode.

2. The duplex and speed settings of each switch port can be manually configured.

3. An autonegotiation failure can result in connectivity issues.Refer to the exhibit. A network administrator has configured R2 for PAT. Why is the configuration incorrect?NAT-POOL2 is bound to the wrong ACL.Which address type is not supported in IPv6?broadcastWhich device connects a local LAN to a geographically separate network?routerWhat is the purpose of the SVI on a Cisco switch?The SVI provides a virtual interface for remote access to the switch.Refer to the exhibit. Interfaces Fa0/5, Fa0/7, and Fa0/9 are the only connected ports on the switch CiscoSwitch. All other ports are unused. Which security best practice did the administrator forget to configure?Configure all unused ports to a 'black-hole' VLAN that is not used for anything on the network.Refer to the exhibit. Routers R1 and R2 are connected via a serial link. One router is configured as the NTP master, and the other is an NTP client. Which two pieces of information can be obtained from the partial output of the show ntp associations detail command on R2? (Choose two.)1. Router R1 is the master, and R2 is the client.

2. The IP address of R1 is 192. 168. 1. 2.Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52?2001:db8:0:f000::/52What is the purpose of deploying dual stack devices?Dual stack allows companies to migrate to IPv6 over time.Which two devices allow hosts on different VLANs to communicate with each other? (Choose two.)1. router

2. Layer 3 switchRefer to the exhibit. Fill in the blank.There are collision domains in the topology.12Refer to the exhibit. A switch with a default configuration connects four hosts. The ARP table for host A is shown. What happens when host A wants to send an IP packet to host D?Host A sends out a broadcast of FF:FF:FF:FF:FF:FF. Every other host connected to the switch receives the broadcast and host D responds with its MAC address.What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?2001:0:0:abcd::1Which three statements are true about full-duplex operation on an Ethernet network? (Choose three.)1. A dedicated switch port is required for each node.

2. There are no collisions in full-duplex mode.

3. The host network card and the switch port must both be in full-duplex mode.Refer to the exhibit. A network administrator is investigating a lag in network performance and issues the show interfaces fastethernet 0/0 command. Based on the output that is displayed, what two items should the administrator check next? (Choose two.)1. duplex settings

2. cable lengthsWhat is the purpose of using SSH to connect to a router?It allows a secure remote connection to the router command line interface.When creating an IPv6 static route, when must a next-hop IPv6 address and an exit interface both be specified?when the next hop is a link-local addressWhich series of commands will cause access list 15 to restrict Telnet access on a router?R1(config)# line vty 0 4R1(config-line)# access-class 15 inRefer to the exhibit. Host A sends a data packet to host B. What will be the addressing information of the data packet when it reaches host B?Source af:3c:dc:4c:55:66Destination a0:4c:5f:21:33:77Source 172.16.1.10Destination 172.16.2.10DataA network engineer is configuring PAT on a router and has issued the command:ip nat source list 1 interface serial 0/1/0 overloadWhich additional command is required to specify addresses from the 192.168.128.0/18 network as the inside local addresses?access-list 1 permit 192.168.128.0 0.0.63.255Refer to the exhibit. How will R1 generate the interface ID portion of the IPv6 address on interface FastEthernet 0/0?by using the interface MAC address with a 16-bit fillerRefer to the exhibit. A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output?They are configured as trunk interfaces.A network administrator has been allocated the IPv4 10.10.240.0/20 block of addresses for a LAN. Two devices on two different, but contiguous, subnets on the LAN have been assigned the addresses 10.10.247.1/21 and 10.10.248.10/24, respectively. The administrator has to create a third subnet from the remaining address range. To optimize the use of this address space, the new subnet will follow on directly from the existing subnets. What is the first available host address in the next available subnet?10.10.249.1Refer to the exhibit. Interfaces Fa0/2, Fa0/4, and Fa0/6 are connected to users on the data network of a switch named CiscoSwitch. Interface Fa0/24 is connected to a file server on the management network. All other ports are unused. Which security best practice did the administrator forget to configure?Disable autonegotiation on interfaces that are not being utilized as a trunk.Which combination of DTP modes will form a link to allow multiple VLANs?dynamic auto-dynamic desirableA network administrator has recently implemented OSPFv2 across the entire network topology. Which command can be implemented to prevent the forwarding of OSPF messages to Layer 2 switches and hosts on interface Fast Ethernet 0/1, while maintaining network connectivity?R1(config-router)# passive-interface FastEthernet 0/1A network technician is configuring port security on a LAN switch interface. The security policy requires host MAC addresses to be learned dynamically, stored in the address table, and saved to the switch running configuration. Which command does the technician need to add to the following configuration to implement this policy?

Switch(config)# interface fa0/1Switch(config-if)# switchport mode accessSwitch(config-if)# switchport port-securitySwitch(config-if)# switchport port-security mac-address stickyMatch the order of precedence to the process logic that an OSPFv3 network router goes through in choosing a router ID. (Not all options are used.)A. priority 1

B. priority 2

C. priority 3

D. priority 41. The router displays a console message to configure the router ID manually. - D

2. The router uses the highest configured IPv4 address of an active interface. - C

3. The router chooses the highest IPv6 address that is configured on the router.

4. The router uses the highest configured IPv4 address of a loopback interface. - B

5. The router uses the explicitly configured router ID if any. - ARefer to the exhibit. OSPFv2 has been configured on router R1, and the router-id command has not been manually configured. When the network administrator reboots router R1, what will be the value of the OSPF router ID?172.16.1.1A network administrator has enabled single-area OSPFv3 on a router via the ipv6 router ospf 100 command. Which command will enable this OSPFv3 process on an interface of that router?R1(config-if)# ipv6 ospf 100 area 0What can a network administrator modify on a router to specify the location from which the Cisco IOS loads? (Choose two.)1. the startup configuration file

2. the configuration register valueWhich three statements characterize UDP? (Choose three.)1. UDP provides connectionless, fast transport of data at Layer 4.

2. UDP relies on application layer protocols for error detection.

3. UDP works well when an application does not need to guarantee delivery of data.Fill in the blank.

A late collision occurs after bits of a frame have been transmitted.512Which three statements describe a DHCP Discover message? (Choose three.)1. The message comes from a client seeking an IP address.

2. The destination IP address is 255.255.255.255.

3. All hosts receive the message, but only a DHCP server replies.Which two issues might cause excessive runt and giant frames in an Ethernet network? (Choose two.)1. a malfunctioning NIC

2. excessive collisionsRefer to the exhibit. Which two statements are correct based on the output as shown in the exhibit? (Choose two.)1. The output is the result of the show ip nat translations command.

2. The host with the address 209.165.200.235 will respond to requests by using a source address of 192.168.10.10.Please allow access to your computers microphone to use Voice Recording.Having trouble?Click herefor help.

CCENT (ICND1) Practice Certification Exam v5

8Which three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)When the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode.An autonegotiation failure can result in connectivity issues.By default, the autonegotiation feature is disabled.Enabling autonegotiation on a hub will prevent mismatched port speeds when connecting the hub to the switch.The duplex and speed settings of each switch port can be manually configured.By default, the speed is set to 100 Mb/s and the duplex mode is set to autonegotiation.By default, autonegotiation is enabled on a Catalyst 2960 switch. However, the duplex and speed settings can be manually configured for each switch port. If the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode. Switches, not hubs, can be configured for auto negotiation.

10When creating an IPv6 static route, when must a next-hop IPv6 address and an exit interface both be specified?when CEF is enabledwhen the static route is a default routewhen the next hop is a link-local addresswhen the exit interface is a point-to-point interfaceLink-local addresses are only unique on a given link, and the same address could exist out multiple interfaces. For that reason, any time a static route specifies a link-local address as the next hop, it must also specify the exit interface. This is called a fully specified static route.

Refer to the exhibit. Which password will the administrator need to use on this device to enter privileged EXEC mode?Ciscoclasspasswordcisco

14

Refer to the exhibit. OSPFv2 has been configured on router R1, and the router-id command has not been manually configured. When the network administrator reboots router R1, what will be the value of the OSPF router ID?172.16.1.1192.168.2.25410.15.15.110.0.10.2If the router ID is not exactly specified by the router-id command, then the highest IPv4 address on any configured loopback interface(s) would become the router ID.

18A network administrator is using the router-on-a-stick model to configure a switch and a router for inter-VLAN routing. What configuration should be made on the switch port that connects to the router?Configure the port as an access port and a member of VLAN1.Configure the port as an 802.1q trunk port.Configure the port as a trunk port and assign it to VLAN1.Configure it as a trunk port and allow only untagged traffic.The port on the switch that connects to the router interface should be configured as a trunk port. Once it becomes a trunk port, it does not belong to any particular VLAN and will forward traffic from various VLANs.

20A network administrator is designing an IPv4 addressing scheme and requires these subnets.1 subnet of 100 hosts2 subnets of 80 hosts2 subnets of 30 hosts4 subnets of 20 hostsWhich combination of subnets and masks will provide the best addressing plan for these requirements9 subnets of 126 hosts with a 255.255.255.128 mask3 subnets of 126 hosts with a 255.255.255.128 mask6 subnets of 30 hosts with a 255.255.255.224 mask3 subnets of 126 hosts with a 255.255.255.192 mask6 subnets of 30 hosts with a 255.255.255.240 mask1 subnet of 126 hosts with a 255.255.255.192 mask2 subnets of 80 hosts with a 255.255.255.224 mask6 subnets of 30 hosts with a 255.255.255.240 maskIPv4 subnets that require 100 and 80 hosts are provided by creating subnets of 126 usable addresses, each of which requires 7 host bits. The resulting mask is 255.255.255.128.Subnets that require 30 and 20 hosts are provided by creating subnets of 30 usable addresses, each of which requires 5 host bits. The resulting mask is 255.255.255.224.Creating nine subnets, each consisting of 126 usable addresses, would waste large numbers of addresses in the six smaller subnets.

22

Refer to the exhibit. A network administrator has configured R2 for PAT. Why is the configuration in?The static NAT entry is missing.NAT-POOL2 is bound to the wrong ACL.The ACL does not define the list of addresses to be translated.The overload keyword should not have been applied.In the exhibit, NAT-POOL 2 is bound to ACL 100, but it should be bound to the configured ACL 1. This will cause PAT to fail. 100, but it should be bound to the configured ACL 1. This will cause PAT to fail.

24

Refer to the exhibit. Which two statements are based on the output as shown in the exhibit? (Choose two.)The output is the result of the show ip nat translations command.The host with the address 209.165.200.235 will respond to requests by using a source address of 192.168.10.10.The host with the address 209.165.200.235 will respond to requests by using a source address of 209.165.200.235.Traffic with the destination address of a public web server will be sourced from the IP of 192.168.1.10.The output is the result of the show ip nat statistics command.The output displayed in the exhibit is the result of the show ip nat translations command. Static NAT entries are always present in the NAT table, while dynamic entries will eventually time out.

26

Refer to the exhibit. Interfaces Fa0/5, Fa0/7, and Fa0/9 are the only connected ports on the switch CiscoSwitch. All other ports are unused. Which security best practice did the administrator forget to configure?Change the native VLAN to a fixed VLAN other than VLAN 1.All active user ports are associated with VLANs distinct from VLAN 1.Delete VLAN 1 from the switch CiscoSwitch.Configure all unused ports to a black-hole VLAN that is not used for anything on the network.All access ports are placed in VLAN 1 by default. This VLAN is the default VLAN and cannot be deleted or renamed. Security best practices dictate that user ports should be changed to something other than VLAN 1 with the command switchport access vlan ID.

27

Refer to the exhibit. Interfaces Fa0/2, Fa0/4, and Fa0/6 are connected to users on the data network of a switch named CiscoSwitch. Interface Fa0/24 is connected to a file server on the management network. All other ports are unused. Which security best practice did the administrator forget to configure?Configure all unused ports to a black-hole VLAN that is not used for anything on the network.Change the native VLAN to a fixed VLAN other than VLAN 1.Disable autonegotiation on interfaces that are not being utilized as a trunk.Delete VLAN 1 from CiscoSwitch.Cisco switches use DTP to autonegotiate between each other. It is recommended to disable autonegotiation to prevent any malicious users from forming a trunk with the Cisco switch on nontrunking interfaces.

29A network engineer is configuring PAT on a router and has issued the command:ip nat source list 1 interface serial 0/1/0 overloadWhich additional command is required to specify addresses from the 192.168.128.0/18 network as the inside local addresses?access-list 1 permit 192.168.128.0 255.255.192.0access-list 1 permit 192.168.128.0 0.0.127.255access-list 1 permit 192.168.128.0 0.0.63.255ip nat inside source list 1 pool INSIDE_NAT_POOLip nat inside source static 192.168.128.0 209.165.200.254A standard access list with the appropriate wildcard mask specifies the inside local addresses to be translated. The ip nat inside source list 1 pool NAT_POOL command configures NAT to use a pool of outside global addresses, not a single outside interface address as required. The ip nat inside source static 192.168.128.0 209.165.200.254 command configures one-to-one static NAT, not PAT as the overload keyword specifies.

36Which three statements describe a DHCP Discover message? (Choose three.)The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF).The destination IP address is 255.255.255.255.The message comes from a server offering an IP address.The message comes from a client seeking an IP address.All hosts receive the message, but only a DHCP server replies.Only the DHCP server receives the message.

37Which two issues might cause excessive runt and giant frames in an Ethernet network? (Choose two.)native VLAN mismatchdamaged cable connectora malfunctioning NICexcessive collisionsusing the in cable typeinly configured auto-MDIX featureIn an Ethernet network, a runt is a frame that is shorter than 64 bytes and a giant is a frame that is longer than the maximum allowed length. Both are often caused by NIC malfunctioning, but can also be caused by excessive collisions. CRC errors usually indicate a media or cable error caused by electrical interference, loose or damaged connections, or using the in cabling type.

40Fill in the blank.A late collision occurs after 512 bits of a frame have been transmitted.

46Which series of commands will cause access list 15 to restrict Telnet access on a router?R1(config)# line vty 0 4R1(config-line)# access-class 15R1(config)# line vty 0 4R1(config-line)# ip access-group 15 inR1(config)# int gi0/0R1(config-if)# access-class 15 inR1(config)# int gi0/0R1(config-if)# ip access-group 15 inOnce an access list to restrict Telnet or SSH access has been created, it is applied to the vty lines with the access-class command. This will restrict Telnet or SSH access.

49A user calls the help desk to report that a Windows XP workstation is unable to connect to the network after startup and that a popup window says This connection has limited or no connectivity. The technician asks the user to issue the ipconfig /all command. The user reports the IP address is 169.254.69.196 with subnet mask of 255.255.0.0 and nothing is displayed for the DNS server IP address. What is the cause of the problem?The workstation NIC has malfunctioned.The subnet mask was configured inly.The DNS server IP address needs to be configured.The workstation is unable to obtain an IP address from a DHCP server.

50Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Which code is displayed on the web browser?Great!It works!Welldone!Inter-VLAN configured!

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