LAN Switching And Wireless - Chapter 4 Exam

1. Refer to the exhibit CH4-6 (on flash drive). All switches in the VTP domain are new. Switch SW1 is configured as a VTP server, switches SW2 and SW4 are configured as VTP clients, and switch SW3 is configured in VTP transparent mode. Which switch or switches receive VTP updates and synchronize their VLAN configuration based on those updates?

All switches receive updates and synchronize VLAN information.

Only switch SW2 receives updates and synchronizes VLAN information.

Only switches SW3 and SW4 receive updates and synchronize VLAN information.

SW3 and SW4 receive updates, but only switch SW4 synchronizes VLAN information.

In this scenario, switch SW1 is configured as a VTP server, while switches SW2 and SW4 are configured as VTP clients. Switch SW3 is configured in VTP transparent mode. VTP updates are sent by the VTP server to all switches in the domain. However, only switches in VTP client mode will synchronize their VLAN configuration based on these updates. Since SW2 is the only switch in client mode, it will receive the updates and synchronize its VLAN information. SW3, being in transparent mode, will receive the updates but will not synchronize its VLAN information. SW4, being a client, will also receive the updates and synchronize its VLAN information. Therefore, the correct answer is "SW3 and SW4 receive updates, but only switch SW4 synchronizes VLAN information."

Explanation

In this scenario, switch SW1 is configured as a VTP server, while switches SW2 and SW4 are configured as VTP clients. Switch SW3 is configured in VTP transparent mode. VTP updates are sent by the VTP server to all switches in the domain. However, only switches in VTP client mode will synchronize their VLAN configuration based on these updates. Since SW2 is the only switch in client mode, it will receive the updates and synchronize its VLAN information. SW3, being in transparent mode, will receive the updates but will not synchronize its VLAN information. SW4, being a client, will also receive the updates and synchronize its VLAN information. Therefore, the correct answer is "SW3 and SW4 receive updates, but only switch SW4 synchronizes VLAN information."

2. Refer to the exhibit CH4-5 (on flash drive). Switches SW1 and SW2 are interconnected via a trunk link but failed to exchange VLAN information. The network administrator issued the show vtp status command to troubleshoot the problem. On the basis of the provided command output, what could be done to correct the problem?

Switch SW2 must be configured as a VTP client.

The switches must be interconnected via an access link.

The switches must be configured with the same VTP domain name.

Both switches must be configured with the same VTP revision number.

To correct the problem, both switches must be configured with the same VTP domain name. The VTP domain name is used to identify and differentiate between different VTP domains in a network. If the switches have different domain names, they will not exchange VLAN information. By configuring both switches with the same VTP domain name, they will be able to exchange VLAN information and resolve the problem.

Explanation

To correct the problem, both switches must be configured with the same VTP domain name. The VTP domain name is used to identify and differentiate between different VTP domains in a network. If the switches have different domain names, they will not exchange VLAN information. By configuring both switches with the same VTP domain name, they will be able to exchange VLAN information and resolve the problem.

3. Which statement is true when VTP is configured on a switched network that incorporates VLANs?

VTP is only compatible with the 802.1Q standard.

VTP adds to the complexity of managing a switched network.

VTP allows a switch to be configured to belong to more than one VTP domain.

VTP dynamically communicates VLAN changes to all switches in the same VTP domain.

VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol that allows for the dynamic exchange of VLAN information between switches in the same VTP domain. This means that when a VLAN is created, modified, or deleted on one switch, that change is automatically propagated to all other switches within the same VTP domain. This greatly simplifies the management of VLANs in a switched network, as administrators only need to make the change on one switch, and it will be automatically applied to all other switches. Therefore, the statement "VTP dynamically communicates VLAN changes to all switches in the same VTP domain" is true.

Explanation

VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol that allows for the dynamic exchange of VLAN information between switches in the same VTP domain. This means that when a VLAN is created, modified, or deleted on one switch, that change is automatically propagated to all other switches within the same VTP domain. This greatly simplifies the management of VLANs in a switched network, as administrators only need to make the change on one switch, and it will be automatically applied to all other switches. Therefore, the statement "VTP dynamically communicates VLAN changes to all switches in the same VTP domain" is true.

4. How are VTP messages sent between switches in a domain?

Layer 2 broadcast

Layer 2 multicast

Layer 2 unicast

Layer 3 broadcast

Layer 3 multicast

Layer 3 unicast

VTP messages are sent between switches in a domain using Layer 2 multicast. Multicasting allows the message to be sent to a specific group of devices that are interested in receiving it, rather than broadcasting it to all devices on the network. This helps to reduce network traffic and improve efficiency. By using Layer 2 multicast, VTP messages can be efficiently delivered to all switches within the domain that need to receive them.

Explanation

VTP messages are sent between switches in a domain using Layer 2 multicast. Multicasting allows the message to be sent to a specific group of devices that are interested in receiving it, rather than broadcasting it to all devices on the network. This helps to reduce network traffic and improve efficiency. By using Layer 2 multicast, VTP messages can be efficiently delivered to all switches within the domain that need to receive them.

5. What causes a VTP configured switch to issue a summary advertisement?

A five-minute update timer has elapsed.

A port on the switch has been shutdown.

The switch is changed to the transparent mode.

A new host has been attached to a switch in the management domain.

A VTP configured switch issues a summary advertisement when a five-minute update timer has elapsed. This timer is responsible for periodically sending out VTP updates to other switches in the network. When the timer expires, the switch sends a summary advertisement to inform other switches about any changes or updates that have occurred in its VLAN database. This ensures that all switches in the VTP domain are kept up to date with the latest VLAN information.

Explanation

A VTP configured switch issues a summary advertisement when a five-minute update timer has elapsed. This timer is responsible for periodically sending out VTP updates to other switches in the network. When the timer expires, the switch sends a summary advertisement to inform other switches about any changes or updates that have occurred in its VLAN database. This ensures that all switches in the VTP domain are kept up to date with the latest VLAN information.

6. Which three VTP parameters must be identical on all switches to participate in the same VTP domain? (Choose three.)

Revision number

Domain name

Pruning

Mode

Domain password

Version number

In order for switches to participate in the same VTP domain, three parameters must be identical. The first parameter is the domain name, which is used to identify the VTP domain. The second parameter is the domain password, which is used to authenticate switches before they can join the domain. The third parameter is the version number, which represents the VTP version being used. By having these three parameters identical on all switches, they can effectively communicate and synchronize VTP information within the same domain.

Explanation

In order for switches to participate in the same VTP domain, three parameters must be identical. The first parameter is the domain name, which is used to identify the VTP domain. The second parameter is the domain password, which is used to authenticate switches before they can join the domain. The third parameter is the version number, which represents the VTP version being used. By having these three parameters identical on all switches, they can effectively communicate and synchronize VTP information within the same domain.

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7. What statement describes the default propagation of VLANs on a trunked link?

Only the native VLAN

VLANs 1 to 1005

Only VLAN 1

All VLANs

No VLANs

The default propagation of VLANs on a trunked link is VLANs 1 to 1005. This means that all VLANs within this range will be allowed to pass through the trunked link by default.

Explanation

The default propagation of VLANs on a trunked link is VLANs 1 to 1005. This means that all VLANs within this range will be allowed to pass through the trunked link by default.

8. Which two statements are true about the implementation of VTP? (Choose two.)

Switches must be connected via trunks.

The VTP domain name is case sensitive.

Transparent mode switches cannot be configured with new VLANs.

The VTP password is mandatory and case sensitive.

Switches that use VTP must have the same switch name.

The first statement is true because in order for VTP to function properly, switches must be connected via trunks to allow the VLAN information to be exchanged.

The second statement is true because the VTP domain name is case sensitive, meaning that if the domain name is entered with different capitalization, it will be treated as a different domain.

Explanation

The first statement is true because in order for VTP to function properly, switches must be connected via trunks to allow the VLAN information to be exchanged.

The second statement is true because the VTP domain name is case sensitive, meaning that if the domain name is entered with different capitalization, it will be treated as a different domain.

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9. Refer to the exhibit CH4-1 (on flash drive). What information can be learned from the output provided?

It verifies the configured VTP password.

It verifies the VTP domain is configured to use VTP version 2.

It verifies VTP advertisements are being exchanged.

It verifies the VTP domain name is V1.

The output provided in the exhibit shows that VTP advertisements are being exchanged. This can be inferred from the "VTP advertisements received" and "VTP advertisements transmitted" fields, which indicate that VTP messages are being sent and received between devices. The other options can be ruled out because there is no mention of verifying the VTP password, VTP domain version, or VTP domain name in the given output.

Explanation

The output provided in the exhibit shows that VTP advertisements are being exchanged. This can be inferred from the "VTP advertisements received" and "VTP advertisements transmitted" fields, which indicate that VTP messages are being sent and received between devices. The other options can be ruled out because there is no mention of verifying the VTP password, VTP domain version, or VTP domain name in the given output.

10. A network administrator is replacing a failed switch with a switch that was previously on the network. What precautionary step should the administrator take on the replacement switch to avoid incorrect VLAN information from propagating through the network?

Enable VTP pruning.

Change the VTP domain name.

Change the VTP mode to client.

Change all the interfaces on the switch to access ports.

When replacing a switch, it is important to change the VTP domain name on the replacement switch to avoid incorrect VLAN information from spreading across the network. The VTP domain name is used to identify and manage VLAN configurations within a network. By changing the domain name, the replacement switch will not inherit the VLAN information from the previous switch, preventing any potential conflicts or inconsistencies in the VLAN configurations. This step ensures that the network remains stable and VLANs are properly managed.

Explanation

When replacing a switch, it is important to change the VTP domain name on the replacement switch to avoid incorrect VLAN information from spreading across the network. The VTP domain name is used to identify and manage VLAN configurations within a network. By changing the domain name, the replacement switch will not inherit the VLAN information from the previous switch, preventing any potential conflicts or inconsistencies in the VLAN configurations. This step ensures that the network remains stable and VLANs are properly managed.

11. Which two statements are true about VTP pruning? (Choose two.)

Pruning is enabled by default.

Pruning can only be configured on VTP servers.

Pruning must be configured on all VTP servers in the domain.

VLANs on VTP client-mode switches will not be pruned.

Pruning will prevent unnecessary flooding of broadcasts across trunks.

VTP pruning is a feature that allows switches to dynamically remove unnecessary traffic from trunk links. It can only be configured on VTP servers, not on client-mode switches. Pruning is not enabled by default and must be manually configured on all VTP servers in the domain. When pruning is enabled, it prevents unnecessary flooding of broadcast traffic across trunks, which helps optimize network bandwidth. Therefore, the two true statements about VTP pruning are: pruning can only be configured on VTP servers, and pruning will prevent unnecessary flooding of broadcasts across trunks.

Explanation

VTP pruning is a feature that allows switches to dynamically remove unnecessary traffic from trunk links. It can only be configured on VTP servers, not on client-mode switches. Pruning is not enabled by default and must be manually configured on all VTP servers in the domain. When pruning is enabled, it prevents unnecessary flooding of broadcast traffic across trunks, which helps optimize network bandwidth. Therefore, the two true statements about VTP pruning are: pruning can only be configured on VTP servers, and pruning will prevent unnecessary flooding of broadcasts across trunks.

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12. Refer to the exhibit CH4-3 (on flash drive). Switch1 is not participating in the VTP management process with the other switches that are shown in the exhibit. What are two possible explanations for this? (Choose two.)

Switch1 is in client mode.

Switch2 is in server mode.

Switch2 is in transparent mode.

Switch1 is in a different management domain.

Switch1 has end devices that are connected to the ports.

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

Two possible explanations for Switch1 not participating in the VTP management process are that Switch1 is in a different management domain and that Switch1 is using VTP version 1 while Switch2 is using VTP version 2.

Explanation

Two possible explanations for Switch1 not participating in the VTP management process are that Switch1 is in a different management domain and that Switch1 is using VTP version 1 while Switch2 is using VTP version 2.

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13. Refer to the exhibit CH4-2. Which two facts can be confirmed by this output? (Choose two.)

If this switch is added to an established network, the other VTP-enabled switches in the same VTP domain will consider their own VLAN information to be more recent than the VLAN information advertised by this switch.

This switch shows no configuration revision errors.

This switch has established two-way communication with the neighboring devices.

This switch is configured to advertise its VLAN configuration to other VTP-enabled switches in the same VTP domain.

This switch is configured to allows the network manager to maximize bandwidth by restricting traffic to specific network devices.

The first fact can be confirmed by the output because it shows that the configuration revision number of the switch is lower than the other switches in the same VTP domain, indicating that the other switches have more recent VLAN information. The second fact can be confirmed because the output does not show any configuration revision errors, indicating that the switch's VLAN configuration is consistent with the other switches in the VTP domain.

Explanation

The first fact can be confirmed by the output because it shows that the configuration revision number of the switch is lower than the other switches in the same VTP domain, indicating that the other switches have more recent VLAN information. The second fact can be confirmed because the output does not show any configuration revision errors, indicating that the switch's VLAN configuration is consistent with the other switches in the VTP domain.

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14. Refer to the exhibit CH4-9 (on flash drive). S2 was previously used in a lab environment and has been added to the production network in server mode. The lab and production networks use the same VTP domain name, so the network administrator made no configuration changes to S2 before adding it to the production network. The lab domain has a higher revision number. After S2 was added to the production network, many computers lost network connectivity. What will solve the problem?

Reset the revision number on S2 with either the delete VTP command or by changing the domain name and then changing it back.

Re-enter all appropriate VLANs, except VLAN 1, manually on Switch1 so that they propagate throughout the network.

Change S1 to transparent VTP mode to reclaim all VLANs in vlan.dat and change back to server mode.

Change S2 to client mode so the VLANs will automatically propagate.

The problem occurred because S2 was previously used in a lab environment and was added to the production network without any configuration changes. Since the lab domain had a higher revision number, it caused conflicts and resulted in many computers losing network connectivity. To solve the problem, re-entering all appropriate VLANs, except VLAN 1, manually on Switch1 will ensure that the VLAN information is propagated correctly throughout the network. This will align the VLAN configurations and resolve the connectivity issues.

Explanation

The problem occurred because S2 was previously used in a lab environment and was added to the production network without any configuration changes. Since the lab domain had a higher revision number, it caused conflicts and resulted in many computers losing network connectivity. To solve the problem, re-entering all appropriate VLANs, except VLAN 1, manually on Switch1 will ensure that the VLAN information is propagated correctly throughout the network. This will align the VLAN configurations and resolve the connectivity issues.

15. Refer to the exhibit CH4-8 (on flash drive). The switches in the exhibit 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.

Transparent mode switches do not forward VTP advertisements.

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

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

When a new VLAN is added to a switch in a VTP management domain, the switch advertises this change to the other switches in the domain through VTP advertisements. However, in this scenario, Switch3 is in transparent mode. Transparent mode switches do not participate in VTP advertisements and do not forward them to other switches. Therefore, the VLAN created on Switch3 is not included in the VTP advertisements, resulting in the other switches not being aware of this new VLAN.

Explanation

When a new VLAN is added to a switch in a VTP management domain, the switch advertises this change to the other switches in the domain through VTP advertisements. However, in this scenario, Switch3 is in transparent mode. Transparent mode switches do not participate in VTP advertisements and do not forward them to other switches. Therefore, the VLAN created on Switch3 is not included in the VTP advertisements, resulting in the other switches not being aware of this new VLAN.

16. What does a client mode switch in a VTP management domain do when it receives a summary advertisement with a revision number higher than its current revision number?

It suspends forwarding until a subset advertisement update arrives.

It issues an advertisement request for new VLAN information.

It increments the revision number and forwards it to other switches.

It deletes the VLANs not included in the summary advertisement.

It issues summary advertisements to advise other switches of status changes.

When a client mode switch in a VTP management domain receives a summary advertisement with a revision number higher than its current revision number, it issues an advertisement request for new VLAN information. This means that the switch is requesting the updated VLAN information from the VTP server in order to synchronize its VLAN database with the latest changes. This allows the switch to stay up to date with any VLAN additions or modifications in the network.

Explanation

When a client mode switch in a VTP management domain receives a summary advertisement with a revision number higher than its current revision number, it issues an advertisement request for new VLAN information. This means that the switch is requesting the updated VLAN information from the VTP server in order to synchronize its VLAN database with the latest changes. This allows the switch to stay up to date with any VLAN additions or modifications in the network.

17. Refer to the exhibit CH4-7 (on flash drive). Switch S1 is in VTP server mode. Switches S2 and S3 are in client mode. An administrator accidentally disconnects the cable from F0/1 on S2. What will the effect be on S2?

S2 will retain the VLANs as of the latest known revision.

S2 will automatically transition to VTP transparent mode.

S2 will remove all VLANs from the VLAN database until the cable is reconnected.

S2 will automatically send a VTP request advertisement to 172.17.99.11 when the cable is reconnected.

When the cable is disconnected from F0/1 on S2, it will not have any effect on the VLANs. S2 will retain the VLANs as of the latest known revision, which means that it will continue to have the same VLAN configuration that it had before the cable was disconnected. The VLAN information is stored in the VTP database, and since S2 is in client mode, it receives updates from the VTP server (S1). Therefore, even if the cable is disconnected temporarily, S2 will still have the correct VLAN configuration once the connection is restored.

Explanation

When the cable is disconnected from F0/1 on S2, it will not have any effect on the VLANs. S2 will retain the VLANs as of the latest known revision, which means that it will continue to have the same VLAN configuration that it had before the cable was disconnected. The VLAN information is stored in the VTP database, and since S2 is in client mode, it receives updates from the VTP server (S1). Therefore, even if the cable is disconnected temporarily, S2 will still have the correct VLAN configuration once the connection is restored.

18. Refer to the exhibit CH4-4 (on flash drive). All switches in the network participate in the same VTP domain. What happens when the new switch SW2 with a default configuration and revision number of 0 is inserted in the existing VTP domain Lab_Network?

The switch operates as a VTP client.

The switch operates in VTP transparent mode.

The switch operates as a VTP server and deletes the existing VLAN configuration in the domain.

The switch operates as a VTP server, but does not impact the existing VLAN configuration in the domain.

The switch operates as a VTP server in the default VTP domain and does not affect the configuration in the existing VTP domain.

When the new switch SW2 with a default configuration and revision number of 0 is inserted in the existing VTP domain Lab_Network, it will operate as a VTP server. However, it will not impact the existing VLAN configuration in the domain. This means that the VLAN configuration on the existing switches will remain unchanged, and the new switch will not overwrite or delete any existing VLANs.

Explanation

When the new switch SW2 with a default configuration and revision number of 0 is inserted in the existing VTP domain Lab_Network, it will operate as a VTP server. However, it will not impact the existing VLAN configuration in the domain. This means that the VLAN configuration on the existing switches will remain unchanged, and the new switch will not overwrite or delete any existing VLANs.

19. Which two statements describe VTP transparent mode operation? (Choose two.)

Transparent mode switches can create VLAN management information.

Transparent mode switches can add VLANs of local significance only.

Transparent mode switches pass any VLAN management information that they receive to other switches.

Transparent mode switches can adopt VLAN management changes that are received from other switches.

Transparent mode switches originate updates about the status of their VLANS and inform other switches about that status.

Transparent mode switches can add VLANs of local significance only. This means that they can create and manage VLANs within their own domain, but these VLANs are not propagated to other switches. Transparent mode switches also pass any VLAN management information that they receive to other switches. This means that they will forward any updates or changes in VLAN configuration to other switches in the network.

Explanation

Transparent mode switches can add VLANs of local significance only. This means that they can create and manage VLANs within their own domain, but these VLANs are not propagated to other switches. Transparent mode switches also pass any VLAN management information that they receive to other switches. This means that they will forward any updates or changes in VLAN configuration to other switches in the network.

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20. What are two features of VTP client mode operation? (Choose two.)

Unable to add VLANs

Can add VLANs of local significance

Forward broadcasts out all ports with no respect to VLAN information

Can only pass VLAN management information without adopting changes

Can forward VLAN information to other switches in the same VTP domain

In VTP client mode operation, the switch is unable to add VLANs. This means that it cannot create or modify VLANs on its own. However, it can receive and forward VLAN information to other switches in the same VTP domain. This allows the switch to share VLAN information with other switches and ensure consistency across the network.

Explanation

In VTP client mode operation, the switch is unable to add VLANs. This means that it cannot create or modify VLANs on its own. However, it can receive and forward VLAN information to other switches in the same VTP domain. This allows the switch to share VLAN information with other switches and ensure consistency across the network.

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