CCNA3 ALL MODULE 100/100

CCNA3 ALL MODULE 100/100

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CCNA3 – Answers chapter 4 v.4.0 (100/100)

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CCNA3 – Answers chapter 4 v.4.0

1. 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.

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2. 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

3. Refer to the exhibit. 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 automatically transition to VTP transparent mode.
	S2 will remove all VLANs from the VLAN database until the cable is reconnected.
	S2 will retain the VLANs as of the latest known revision, but will lose the VLANs if it is reloaded.
	S2 will automatically send a VTP request advertisement to 172.17.99.11 when the cable is reconnected.

4. Refer to the exhibit. 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.

5. Refer to the exhibit. 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.

6. Refer to the exhibit. 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.

7. 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.

8. 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.

9. 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.

10. 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

11. Refer to the exhibit. 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 effect the configuration in the existing VTP domain.

12. Refer to the exhibit. 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.

13. Refer to the exhibit. 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.

14. Refer to the exhibit. 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.

15. Refer to the exhibit. 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.

16. 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.

17. 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.

18. 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.

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

	only VLAN 1
	all VLANs
	no VLANs
	the native VLAN

20. 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

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CCNA3 – Answers chapter 3 v.4.0 (100/100)

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CCNA3 – Answers chapter 3 v.4.0

1. Which two statements describe the benefits of VLANs? (Choose two.)

	VLANs improve network performance by regulating flow control and window size.
	VLANs enable switches to route packets to remote networks via VLAN ID filtering.
	VLANs reduce network cost by reducing the number of physical ports required on switches.
	VLANs improve network security by isolating users that have access to sensitive data and applications.
	VLANs divide a network into smaller logical networks, resulting in lower susceptibility to broadcast storms.

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2. What port assignment mode should be used on the switch to provide connectivity for traffic coming from voice and data VLANs?

	static VLAN port membership, as long as all VLANs are enabled on the port
	static VLAN port membership, as long as voice and data VLANs are enabled on the port
	voice VLAN port membership, which automatically provides connectivity for both VLANs
	dynamic VLAN port membership, which dynamically switches the traffic coming from voice and data VLANs

3. Which two statements are true regarding VLANs? (Choose two.)

	VLAN 1 can be deleted or renamed.
	Catalyst switches can support up to 255 VLANs.
	VLAN information for a VLAN numbered 4000 would be stored in flash.
	Switches use CDP advertisements on VLAN 1 to detect neighboring device information.
	Extended VLANs allow multiple VLAN memberships to be assigned to a single port simultaneously.

4. What are three characteristics of VLAN1 in a default switch configuration? (Choose three.)

	CDP messages are only sent on VLAN1.
	VLAN1 is reserved for links between switches.
	All switch ports are members of VLAN1.
	VLAN1 must be created before ports can be assigned to it.
	Only switch port 0/1 is assigned to VLAN1.
	An IP address configured on the switch will only apply to ports on VLAN1.

5. Switch-A and Switch-B are both configured with ports in the Marketing, Sales, Accounting, and Admin VLANs. Each VLAN contains 12 users. How many different subnetworks will be needed to enable routed connectivity between the VLANs?

	1
	4
	12
	48

6. By default, to which VLAN does a trunked link belong?

	the first VLAN defined
	the last VLAN defined
	all VLANs
	the lowest number VLAN

7. Refer to the exhibit. Interface Fa0/1 on switch SW1 is configured in trunk mode. Which statement is true about the trunk link between the switches SW1 and SW2?

	Interface Fa0/2 on switch SW2 will negotiate to become a trunk link if it supports DTP.
	Interface Fa0/1 converts the neighboring link on the adjacent switch into a trunk link automatically with no consideration of the configuration on the neighboring interface.
	Interface Fa0/1 converts the neighboring link on the adjacent switch into a trunk link if the neighboring interface is configured in nonegotiate mode.
	Interface Fa0/2 on switch SW2 can only become a trunk link if statically configured in that mode.

8. What information does frame tagging add to each frame to allow delivery of frames across a switched trunk?

	the destination MAC address
	the switch MAC address
	the VLAN ID
	the BID

9. Refer to the exhibit. Host A sends a frame to host B. On which links along the path between hosts A and B will a VLAN ID tag be included with the frame?

	C, E
	A, C, E
	C, E, F
	A, C, D, E
	A, B, C, D, E
	A, B, C, D, E, F, G

10. The network administrator wants to separate hosts in Building A into two VLANs numbered 20 and 30. Which two statements are true concerning VLAN configuration? (Choose two.)

	The VLANs may be named.
	VLAN information is saved in the startup configuration.
	Non-default VLANs created manually must use the extended range VLAN numbers.
	The network administrator may create the VLANs in either global configuration mode or VLAN database mode.
	Both VLANs may be named BUILDING_A to distinguish them from other VLANs in different geographical locations.

11. Refer to the exhibit. The network administrator has added the configuration shown to a Catalyst switch without receiving any error or information messages from the switch. What statement is true regarding Fast Ethernet port 0/2?

	Data from multiple VLANs travels on interface Fast Ethernet 0/2.
	No data can travel on interface Fast Ethernet 0/2 until the network administrator assigns it an IP address in the range of VLAN2.
	For Host A to be able to communicate with Host B and Host C, VLAN3 and VLAN4 must also be configured on interface Fast Ethernet 0/2.
	The network administrator has already entered the command vlan 2 in global configuration mode.
	The network administrator has already named VLAN2.

12. Refer to the exhibit. Which two conclusions can be drawn regarding the switch that produced the output shown? (Choose two.)

	The network administrator configured VLANs 1002-1005.
	The VLANs are in the active state and are in the process of negotiating configuration parameters.
	A FDDI trunk has been configured on this switch.
	The command switchport access vlan 20 was entered in interface configuration mode for Fast Ethernet interface 0/1.
	Devices attached to ports fa0/5 through fa0/8 cannot communicate with devices attached to ports fa0/9 through fa0/12 without the use of a Layer 3 device.

13. What must the network administrator do to remove Fast Ethernet port fa0/1 from VLAN 2 and assign it to VLAN 3?

	Enter the no vlan 2 and the vlan 3 commands in global configuration mode.
	Enter the no switchport access vlan 2 command in interface configuration mode and then configure the port for VLAN 3.
	Enter the switchport access vlan 3 command in interface configuration mode.
	Administratively shut down the interface to return it to the default configuration and then configure the port for VLAN 3.

14. What happens to the member ports of a VLAN when the VLAN is deleted?

	They become inactive.
	They default back to the management VLAN.
	They automatically become a part of VLAN1.
	They must be assigned to another VLAN before the original VLAN can be deleted.
	They remain a part of that VLAN until the switch is rebooted. They then become members of the management VLAN.

15. A network administrator is removing several VLANs from a switch. When the administrator enters the no vlan 1 command, an error is received. Why did this command generate an error?

	VLANs can only be deleted by the user who created them.
	VLAN 1 can not be deleted until another VLAN has been assigned its responsibilities.
	The command was not entered properly, which caused a syntax error to occur.
	VLAN 1 can not be deleted until all ports have been removed from it.
	VLAN 1 is the management VLAN by default and can not be deleted.

16. What is the effect of the switchport mode dynamic desirable command?

	The remote connected interface must be configured as dynamic desirable for the devices to negotiate a trunk.
	The native VLAN must be the default VLAN for DTP to negotiate the trunk.
	The connected devices dynamically determine when data for multiple VLANs must be transmitted across the link and bring the trunk up as needed.
	If the remote connected device is configured with the switchport mode dynamic auto or switchport mode trunk commands, data from multiple VLANs is transmitted over a single connection.

17. Refer to the exhibit. The two switches that are shown will not form a trunk. What is the most likely cause of this problem?

	The native VLANs are improperly configured.
	All the hosts are on the same VLAN and a trunk is not needed.
	Both ports are set to dynamic auto.
	The trunk should be configured using the switchport mode access command.

18. Switch port fa0/1 was manually configured as a trunk, but now it will be used to connect a host to the network. How should the network administrator reconfigure switch port fa0/1?

	Remove the multiple VLANs that the port carried in global configuration mode.
	Enter the switchport nonegotiate command in interface configuration mode.
	Administratively shut down and re-enable the interface to return it to default.
	Enter the no switchport mode trunk command in interface configuration mode.
	Disable DTP.
	Enter the switchport mode access command in interface configuration mode

19. Refer to the exhibit. What is the result of the configuration provided?

	The traffic between the hosts in the same VLAN is switched properly.
	The trunk link is established, but only the traffic on the native VLAN crosses the link.
	The trunk link is established, but only the traffic on the regular VLANs crosses the link.
	The trunk link is down, and no traffic is able to cross the link.

20. Refer to the exhibit. Host B is on the same VLAN as Host D, but they are unable to communicate. What is the most likely cause of this problem?

	The link between the switches is up but not trunked.
	VLAN filtering is not allowing VLAN 3 to enter the trunk between the switches.
	The router is not properly configured to route traffic between the VLANs.
	Host D does not have a proper address for the VLAN 3 address space.

21. Refer to the exhibit. The network administrator has just added VLAN 50 to Switch1 and Switch2 and assigned hosts on the IP addresses of the VLAN in the 10.1.50.0/24 subnet range. Host A can communicate with Host B, but not with Host C or Host D. What is the most likely cause of this problem?

	There is a native VLAN mismatch.
	The link between Switch1 and Switch2 is up but not trunked.
	The router is not properly configured for inter-VLAN routing.
	VLAN filtering is preventing VLAN 50 from entering the trunk between Switch1 and Switch2.

22. Refer to the exhibit. Which statement is true concerning interface Fa0/5?

	The default native VLAN is being used.
	The trunking mode is set to auto.
	Trunking can occur with non-Cisco switches.
	VLAN information about the interface encapsulates the Ethernet frames.

23. Refer to the exhibit. Why is Administrative Trunking Encapsulation set to negotiate?

	IEEE 802.1q is the sole encapsulation type available on the switch.
	This port on the switch does not support Cisco proprietary trunking.
	It supports the ability of the switch to use either IEEE 802.1q or ISL encapsulation.
	It allows the switch to dynamically determine whether this port is in trunking mode or access mode.

24. Which two statements describe how devices on VLANs communicate? (Choose two.)

	Devices on different VLANs communicate through VTP.
	Devices on different VLANs communicate through routers.
	Data for multiple VLANs is carried over an access link that connects two switches.
	Devices on the same VLAN communicate through a router.
	Devices on the same VLAN communicate through Layer 2 switches.

25. Refer to the exhibit. How far is a broadcast frame that is sent by host A propagated in the LAN domain?

	Only hosts in VLAN10 receive the broadcast frame.
	All hosts that are connected to SW1 receive the broadcast frame.
	All hosts that are connected to SW2 and SW3 receive the broadcast frame.
	All hosts in VLAN 20 and VLAN 30 receive the broadcast frame.
	Hosts that are connected to all switches receive the broadcast frame.

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