Friday, 8 March 2013Take Assessment DRSEnt Chapter 3 CCNA Discovery: Introducing Routing and Switching in the Enterprise (Version 4.0) full marks

1Top of FormIn which STP state does a switch port transmit user data and learn MAC addresses?

blocking

learning

disabling

listening

forwarding

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2Top of FormRefer to the exhibit. What two conclusions can be drawn from the information that is shown in the exhibit? (Choose two.)

All ports that are listed in the exhibit are access ports.

ARP requests from Host1 will be forwarded to Host2.

Attaching Host1 to port 11 will automatically allow communication between both hosts.

The default gateway for each host must be changed to 192.168.3.250/28 to allow communication between both hosts.

A router connected to the switch is needed to forward traffic between the hosts.

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3Top of FormWhat is the purpose of VTP?

maintaining consistency in VLAN configuration across the network

routing frames from one VLAN to another

routing the frames along the best path between switches

tagging user data frames with VLAN membership information

distributing BPDUs to maintain loop-free switched paths

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4Top of FormWhich statement best describes adaptive cut-through switching?

The switch initially forwards all traffic using cut-through switching and then changes to store-and-forward switching if errors exceed a threshold value.

The switch initially forwards all traffic using cut-through switching and then changes to fast-forward switching if errors exceed a threshold value.

The switch initially forwards all traffic using cut-through switching and then temporarily disables the port if errors exceed a threshold value.

The switch initially forwards all traffic using store-and-forward switching and then changes to cut-through switching if errors exceed a threshold value.

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5Top of FormWhich Catalyst switch feature causes an access port to enter the spanning-tree forwarding state immediately?

backbonefast

uplinkfast

portfast

rapid spanning tree

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6Top of FormWhich two items will prevent broadcasts from being sent throughout the network? (Choose two.)

bridges

routers

switches

VLANs

hubs

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7Top of FormRefer to the exhibit. Switch1 is not participating in the VTP management process with the other switches. Which two are possible reasons for this? (Choose two.)

Switch2 is in transparent mode.

Switch1 is in client mode.

Switch1 is using VTP version 1 and Switch2 is using VTP version 2.

Switch2 is in server mode.

Switch1 is in a different management domain.

Switch1 has no VLANs.

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8Top of FormWhich two criteria are used by STP to select a root bridge? (Choose two.)

memory size

bridge priority

switching speed

number of ports

base MAC address

switch location

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9Top of FormWhat is the first step in the process of convergence in a spanning tree topology?

election of the root bridge

determination of the designated port for each segment

blocking of the non-designated ports

selection of the designated trunk port

activation of the root port for each segment

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10Top of FormWhich two items are contained within a BPDU? (Choose two.)

identity of the default gateway

number of ports blocked by STP

identity of the root bridge

identity of the source port

VTP domain name

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11Top of FormWhich statement describes a difference between STP and RSTP?

RSTP is proprietary while STP is defined by IEEE.

RSTP defines four port states while STP defines five port states.

When a topology changes, RSTP reconfigures the spanning tree in less than 1 second.

STP is more commonly used in large switched enterprise networks that require faster recovery.

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12Top of FormA router has two serial interfaces and two Fast Ethernet interfaces. This router must be connected to a WAN link and to a switch that supports four VLANs. How can this be accomplished in the most efficient and cost-effective manner to support inter-VLAN routing between the four VLANs?

Connect a smaller router to the serial interface to handle the inter-VLAN traffic.

Add two additional Fast Ethernet interfaces to the router to allow one VLAN per interface.

Connect a trunked uplink from the switch to one Fast Ethernet interface on the router and create logical subinterfaces for each VLAN.

Use serial-to-Fast Ethernet transceivers to connect two of the VLANs to the serial ports on the router. Support the other two VLANs directly to the available FastEthernet ports.

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13Top of Form

Refer to the exhibit. A network administrator noticed that the VLAN configuration changes at SW2 did not propagate to SW3. On the basis of the partial output of theshow vtp statuscommand, what is the possible cause of the problem?

VTP V2 mode is disabled.

SW3 is configured as transparent mode.

The number of existing VLANs does not match.

The configuration revision number does not match.

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14Top of FormWhen are MAC addresses removed from the CAM table?

at regular 30 second intervals

when a broadcast packet is received

when the IP Address of a host is changed

after they have been idle for a certain period of time

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15Top of FormUsing STP, how long does it take for a switch port to go from the blocking state to the forwarding state?

2 seconds

15 seconds

20 seconds

50 seconds

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16Top of Form

Refer to the exhibit. A router is configured to connect to a trunked uplink of a switch. A packet is received on the FastEthernet 0/1 physical interface from VLAN 10 with a destination address of 192.168.1.120. What will the router do with this packet?

forward the packet out interface FastEthernet 0/1.1 tagged for VLAN 10

forward the packet out interface FastEthernet 0/1.2 tagged for VLAN 60

forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 120

not process the packet (because the source and destination are on the same subnet)

drop the packet (because no network that includes the source address is attached to the router)

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17Top of FormRefer to the exhibit. What is the effect of the commands in the exhibit?

There will be no effect unless the commandswitchport port-security mac-addressmac-addris added.

The first device that is connected to port fa0/6 will be allowed to transmit data. Any other devices that connect to it will shut down the port.

The first device that is connected to port fa0/6 will be allowed to transmit data. The learned MAC will be kept even after the switch is restarted.

The first device that is connected to port fa0/6 will be allowed to transmit data. Any other devices that connect to it will be allowed to transmit data and a warning will be sent to the syslog server.

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18Top of FormIn an enterprise network, why would voice traffic typically require a dedicated VLAN?

It guarantees end-to-end delivery for voice traffic.

It guarantees higher bandwidth for voice traffic.

It separates voice traffic from data traffic so data traffic does not impact voice traffic.

It provides backup support for voice traffic because voice traffic is more critical than data traffic.

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19Top of FormWhich statement is true about the port security feature in a Cisco switch?

It disables unused ports.

It filters network traffic based on host MAC addresses.

It executes a shutdown on the port, based on Layer 4 port numbers.

It disables Telnet traffic because the username and password are transmitted in plain text.

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20Top of FormRefer to the exhibit. The switches are interconnected by trunked links and are configured for VTP as shown. A new VLAN is added to Switch1. Which three actions will occur? (Choose three.)

Switch1 will not add the VLAN to its database and will pass the update to Switch 2.

Switch2 will add the VLAN to its database and pass the update to Switch3.

Switch3 will pass the VTP update to Switch4.

Switch3 will add the VLAN to its database.

Switch4 will add the VLAN to its database.

Switch4 will not receive the update.

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21Top of FormWhich three must be used when a router interface is configured for VLAN trunking? (Choose three.)

one subinterface per VLAN

one physical interface for each subinterface

one IP network or subnetwork for each subinterface

one trunked link per VLAN

a management domain for each subinterface

a compatible trunking protocol encapsulation for each subinterface

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22Top of FormWhich two characteristics describe a port in the STP blocking state? (Choose two.)

receives BPDUs

provides port security

displays a steady green light

learns MAC addresses as BPDUs are processed

discards data frames received from the attached segment

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23Top of Form

Refer to the exhibit. Which statement is true about the network traffic flow on this switch?

All PCs that are connected to this switch will be able to communicate with each other as long as they belong to the same IP network.

A PC that is connected to port Fa0/2 can communicate with another PC that is connected to Port Fa0/22 if the PCs belong to the same IP network.

A PC that is connected to port Fa0/11 can communicate with another PC that is connected to Port Fa0/20 if the PCs belong to the same IP network.

A PC that is connected to port Fa0/15 can communicate with another PC that is connected to Port Fa0/24 regardless of the IP network to which the PCs belong.

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24Top of FormRefer to the exhibit. The switches are connected with trunks within the same VTP management domain. Each switch is labeled with its VTP mode. A new VLAN is added to Switch3. This VLAN does not show up on the other switches. What is the reason for this?

VLANs cannot be created on transparent mode switches.

Server mode switches neither listen to nor forward VTP messages from transparent mode switches.

VLANs created on transparent mode switches are not included in VTP advertisements.

There are no ports assigned to the new VLAN on the other switches.

Transparent mode switches do not forward VTP advertisements.

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25Top of FormWhich statement describes the function of a VLAN Management Policy Server (VMPS)?

VMPS provides easy organization of static VLAN membership.

VMPS provides flexible dynamic assignments of VLAN membership.

VMPS provides a backup service for static VLAN membership configuration.

VMPS provides the easiest deployment of VLANs regardless of the number of switches involved.

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DRSEnt Chapter 3 CCNA Discovery 3 4.0 2012 2013 100%January 1, 2012byHeiseR 0 Comments and 0 ReactionsTake Assessment DRSEnt Chapter 3 CCNA Discovery: Introducing Routing and Switching in the Enterprise (Version 4.0) Answers 2012 20131. Refer to the exhibit. What two statements can be concluded from the information that is shown in the exhibit? (Choose two.)All ports that are listed in the exhibit are access ports.ARP requests from Host1 will be forwarded to Host2.Attaching Host1 to port 3 will automatically allow communication between both hosts.The default gateway for each host must be changed to 192.168.3.250/28 to allow communication between both hosts.A router connected to the switch is needed to forward traffic between the hosts.2. A router is configured to connect to a trunked uplink as shown in the exhibit. A packet is received on the FastEthernet 0/1 physical interface from VLAN 10. The packet destination address is 192.168.1.120. What will the router do with this packet?The router will forward the packet out interface FastEthernet 0/1.1 tagged for VLAN 10.The router will forward the packet out interface FastEthernet 0/1.2 tagged for VLAN 60.The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 60.The router will forward the packet out interface FastEthernet 0/1.3 tagged for VLAN 120.The router will not process the packet since the source and destination are on the same subnet.The router will drop the packet since no network that includes the source address is attached to the router.3. The information contained in a BPDU is used for which two purposes? (Choose two.)to prevent loops by sharing bridging tables between connected switchesto set the duplex mode of a redundant linkto determine the shortest path to the root bridgeto determine which ports will forward frames as part of the spanning treeto activate looped paths throughout the network4. A router has two serial interfaces and two Fast Ethernet interfaces. This router must be connected to a WAN link and to a switch that supports four VLANs. How can this be accomplished in the most efficient and cost-effective manner to support inter-VLAN routing between the four VLANs?Connect a smaller router to the serial interface to handle the inter-VLAN traffic.Add two additionalFast Ethernetinterfaces to the router to allow one VLAN per interface.Connect a trunked uplink from the switch to oneFast Ethernetinterface on the router and create logical subinterfaces for each VLAN.Use serial-to-Fast Ethernet transceivers to connect two of the VLANs to the serial ports on the router. Support the other two VLANs directly to the available FastEthernet ports.5. When are MAC addresses removed from the CAM table?at regular 30 second intervalswhen a broadcast packet is receivedwhen the IP Address of a host is changedafter they have been idle for a certain period of time6. Refer to the exhibit. Switch1 is not participating in the VTP management process with the other switches. Which two are possible reasons for this? (Choose two.)Switch2 is in transparent mode.Switch1 is in client mode.Switch1 is using VTP version 1 and Switch2 is using VTP version 2.Switch2 is in server mode.Switch1 is in a different management domain.Switch1 has no VLANs.7. Which three must be used when a router interface is configured for VLAN trunking? (Choose three.)one subinterface per VLANone physical interface for each subinterfaceone IP network or subnetwork for each subinterfaceone trunked link per VLANa management domain for each subinterfacea compatible trunking protocol encapsulation for each subinterface8. Refer to the exhibit. The switches are connected with trunks within the same VTP management domain. Each switch is labeled with its VTP mode. A new VLAN is added to Switch3. This VLAN does not show up on the other switches. What is the reason for this?VLANs cannot be created on transparent mode switches.Server mode switches neither listen to nor forward VTP messages from transparent mode switches.VLANs created on transparent mode switches are not included in VTP advertisements.There are no ports assigned to the new VLAN on the other switches.Transparent mode switches do not forward VTP advertisements.9. Which two criteria are used by STP to select a root bridge? (Choose two.)memory sizebridge priorityswitching speednumber of portsbase MAC addressswitch location10. Which three steps should be taken before moving a Catalyst switch to a new VTP management domain? (Choose three.)Reboot the switch.Reset the VTP counters to allow the switch to synchronize with the other switches in the domain.Download the VTP database from the VTP server in the new domain.Configure the VTP server in the domain to recognize the BID of the new switch.Select the correct VTP mode and version.Configure the switch with the name of the new management domain.11. Which two items will prevent broadcasts from being sent throughout the network? (Choose two.)bridgesroutersswitchesVLANshubs12. Which two characteristics describe a port in the STP blocking state? (Choose two.)provides port securitydisplays a steadygreen lightlearns MAC addresses as BPDUs are processeddiscards data frames received from the attached segmentreceives BPDUs and directs them to the system module13. What is the first step in the process of convergence in a spanning tree topology?election of the root bridgedetermination of the designated port for each segmentblocking of the non-designated portsselection of the designated trunk portactivation of the root port for each segment14. In which STP state does a switch port transmit user data and learn MAC addresses?blockinglearningdisablinglisteningforwarding15. What is the purpose of VTP?maintaining consistency in VLAN configuration across the networkrouting frames from one VLAN to anotherrouting the frames along the best path between switchestagging user data frames with VLAN membership informationdistributing BPDUs to maintain loop-free switched paths16. Which statement best describes adaptive cut-through switching?The switch initially forwards all traffic using cut-through switching and then changes to store-and-forward switching if errors exceed a threshold value.The switch initially forwards all traffic using cut-through switching and then changes to fast-forward switching if errors exceed a threshold value.The switch initially forwards all traffic using cut-through switching and then temporarily disables the port if errors exceed a threshold value.The switch initially forwards all traffic using store-and-forward switching and then changes to cut-through switching if errors exceed a threshold value.17. Using STP, how long does it take for a switch port to go from the blocking state to the forwarding state?2 seconds15 seconds20 seconds50 seconds18. Refer to the exhibit. The switches are interconnected by trunked links and are configured for VTP as shown. A new VLAN is added to Switch1. Which three actions will occur? (Choose three.)Switch1 will not add the VLAN to its database and will pass the update to Switch 2.Switch2 will add the VLAN to its database and pass the update to Switch3.Switch3 will pass the VTP update to Switch4.Switch3 will add the VLAN to its database.Switch4 will add the VLAN to its database.Switch4 will not receive the update.19. Which Catalyst feature causes a switch port to enter the spanning-tree forwarding state immediately?backbonefastuplinkfastportfastrapid spanning tree20. Refer to the exhibit. Which set of commands would be used on the router to provide communication between the two hosts connected to the switch?Router(config)# interface vlan 2Router(config-if)# ip address 192.168.2.1 255.255.255.0Router(config-if)# no shutdownRouter(config)# interface vlan 3Router(config-if)# ip address 192.168.3.1 255.255.255.0Router(config-if)# no shutdownRouter(config)# interface fastethernet 0/0Router(config-if)# no shutdownRouter(config-if)# interface fastethernet 0/0.2Router(config-subif)# encapsulation dot1q 2Router(config-subif)# ip address 192.168.2.1 255.255.255.0Router(config-if)# interface fastethernet 0/0.3Router(config-subif)# encapsulation dot1q 3Router(config-subif)# ip address 192.168.3.1 255.255.255.0Router(config)# interface vlan 2Router(config-if)# switchport mode trunk dot1qRouter(config)# interface vlan 3Router(config-if)# switchport mode trunk dot1qRouter(config)# interface fastethernet 0/0Router(config-if)# mode trunk dot1q 2 3Router(config-if)# ip address 192.168.2.1 255.255.255.0Share this:

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