CCNA 3 Chapter 2 V6.0 Answers

1. Where is the vlan.dat file stored on a switch?

on the externally attached storage media or internal hard drive


in flash memory

in RAM


2. How are IP addressing designs affected by VLAN implementations?

Each VLAN must have a different network number

VLANs do not support VLSM.

VLANs do not use a broadcast address.

Each VLAN must have a different subnet mask.


3. Refer to the exhibit. A router-on-a-stick configuration was implemented for VLANs 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the /24 network are having trouble connecting to PCs on VLAN 30 in the /24 network. Which error is most likely causing this problem?

Which error is most likely causing this problem?

The GigabitEthernet 0/0 interface is missing an IP address.

The wrong VLAN has been configured on GigabitEthernet 0/0.45.

There is an incorrect IP address configured on GigabitEthernet 0/0.30.

The command no shutdown is missing on GigabitEthernet 0/0.30.


4. Refer to the exhibit. The switch does the routing for the hosts that connect to VLAN 5. If the PC accesses a web server from the Internet, at what point will a VLAN number be added to the frame?

The switch does the routing for the hosts that connect to VLAN 5

point E

point A

point B

No VLAN number is added to the frame in this design.

point C

point D


5. Given the following configuration, which two statements are true? (Choose two.)

switch(vlan)# vtp version 2

switch(vlan)# vtp mode server

switch(vlan)# vtp domain Cisco

switch(vlan)# vtp password mypassword

The password will prevent unauthorized routers from participating in the Cisco domain.

This switch can create, modify, and delete all VLANs within the Cisco domain

This switch can send and receive advertisements from only the Cisco domain.

This switch can advertise its VLAN configuration to other switches in the Cisco domain only, but can receive advertisements from other domains.

This switch maintains a full list of all VLANs and can create VLANs, but cannot delete or modify existing VLANs.


6. A switch is participating in a VTP domain and configured as a VTP server. The switch needs to propagate VLAN 10 (used by the Manufacturing department) throughout the VTP domain, but does not have any directly connected hosts using that particular VLAN. Which configuration would satisfy this requirement?

interface fa0/24

switchport mode access

switchport access vlan 10


vlan 10

name Manufacturing



vtp mode server

vtp password Manufacturing


interface g0/1

switchport mode trunk

switchport trunk native vlan 10


7. Refer to the exhibit. Communication between the VLANs is not occurring. What could be the issue?

Communication between the VLANs is not occurring

The wrong port on the router has been used.

A duplex issue exists between the switch and the router.

Default gateways have not been configured for each VLAN.

The Gi1/1 switch port is not in trunking mode.


8. What happens to switch ports after the VLAN to which they are assigned is deleted?

The ports are disabled.

The ports are placed in trunk mode.

The ports are assigned to VLAN1, the default VLAN.

The ports stop communicating with the attached devices.


9. Refer to the exhibit. A network administrator is configuring inter-VLAN routing. However, the communication between VLAN 10 and VLAN 20 fails. Based on the output of the show vlan command, what is the cause of the problem?

Based on the output of the show vlan command, what is the cause of the problem

Gi1/1 and Gi1/2 are not assigned to their respective VLANs

The IP addresses on Gi0/0 and Gi0/1 are not on the same network.

Gi1/1 and Gi1/2 are not configured as trunk mode.

The IP addresses on Gi0/0 and Gi0/1 are switched by mistake.


10. Fill in the blank. In a Cisco switch, the extended range VLAN information is stored in the running configuration file.


11. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Fill in the blank. Do not use abbreviations.

Which command is missing on the Layer 3 switch to restore the full connectivity between PC1 and the web server? (Note that typing no shutdown will not fix this problem.) [ _ ]

ip address


12. Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface?

Show interfaces trunk

show mac address-table interface Fa0/1

show vlan brief

show interfaces Fa0/1 switchport


13. Which command should the network administrator implement to prevent the transfer of DTP frames between a Cisco switch and a non-Cisco switch?

S1(config-if)# switchport mode dynamic desirable

S1(config-if)# switchport mode access

S1(config-if)# switchport mode trunk

S1(config-if)# switchport nonegotiate

S1(config-if)# switchport trunk allowed vlan none


14. What is a characteristic of VTP?

Switches in VTP transparent mode revert back to VTP server mode after a reboot.

Switches in VTP client mode store VLAN information in NVRAM.

Switches in VTP server mode cannot be updated by switches in VTP client mode.

Switches in VTP transparent mode forward VTP advertisements.


15. What is a disadvantage of using multilayer switches for inter-VLAN routing?

Multilayer switches have higher latency for Layer 3 routing.

Multilayer switches are limited to using trunk links for Layer 3 routing.

Spanning tree must be disabled in order to implement routing on a multilayer switch.

Multilayer switches are more expensive than router-on-a-stick implementations.


16. How is traffic routed between multiple VLANs on a multilayer switch?

Traffic is routed via internal VLAN interfaces.

Traffic is routed via subinterfaces.

Traffic is routed via physical interfaces.

Traffic is broadcast out all physical interfaces.


17. Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

Based on the output, what is the possible cause of the problem?

Gi0/0 is not configured as a trunk port.

The command interface GigabitEthernet0/0.5 was entered incorrectly.

The encapsulation dot1Q 5 command contains the wrong VLAN.

There is no IP address configured on the interface Gi0/0.

The no shutdown command is not entered on subinterfaces.


18. While configuring inter-VLAN routing on a multilayer switch, a network administrator issues the no switchport command on an interface that is connected to another switch. What is the purpose of this command?

To create a switched virtual interface

to provide an access link that tags VLAN traffic

to provide a static trunk link

to create a routed port for a single network


19. Which two events will cause the VTP revision number on a VTP server to change? (Choose two.)

changing the switch to a VTP client

changing interface VLAN designations

changing the VTP domain name

adding VLANs

rebooting the switch


20. Match the DTP mode with its function. (Not all options are used.)

Match the DTP mode with its function

passively waits for the neighbor to initiate trunking => dynamic auto

requires manual configuration of trunking or nontrunking => negotiate

actively attempts to convert the link to a trunk => dynamic desirable

permanent trunking mode => trunk


21. What is a characteristic of a routed port on a Layer 3 switch?

It is commonly used as a WAN link.

It cannot have an IP address assigned to it.

It supports trunking.

It is not assigned to a VLAN.


22. Which two VTP parameters must be identical on all switches in the network in order to participate in the same VTP domain? (Choose two.)

VTP domain name

VTP domain password

VTP transparent mode

VTP server mode

VTP client mode

VTP revision number


23. Refer to the exhibit. After attempting to enter the configuration that is shown in router RTA, an administrator receives an error and users on VLAN 20 report that they are unable to reach users on VLAN 30. What is causing the problem?

What is causing the problem?

Dot1q does not support subinterfaces.

The no shutdown command should have been issued on Fa0/0.20 and Fa0/0.30.

There is no address on Fa0/0 to use as a default gateway.

RTA is using the same subnet for VLAN 20 and VLAN 30.


24. Which three actions can cause problems with a VTP implementation? (Choose three.)

not using any VTP passwords on any switches

configuring all switches to be in VTP server mode

using non-Cisco switches

having a VTP transparent switch in between a VTP server switch and a VTP client switch (all switches in the same VTP domain)

using a non-trunk link to connect switches

using lowercase on one switch and uppercase on another switch for domain names


25. Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.)

when connecting a Cisco switch to a non-Cisco switch

when a neighbor switch uses a DTP mode of dynamic auto

when a neighbor switch uses a DTP mode of dynamic desirable

on links that should not be trunking

on links that should dynamically attempt trunking

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