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

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.

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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GNS3-Topology: CCNA & CCNP Full Mesh Topology Template

Chris sent me a lab which he says has helped him to work on about 95% of his CCNA and CCNP lab requirements. I think this is a clear sign that using Dynamips or GNS3 can be effective in a big way with exam preperation. That 5% left over can be achieved in a few ways - rack space, friends with labs or purchasing switches on ebay and link them into the virtual topology using real interfaces. Nevertheless Its great to see how much we can do without cash, space or budget (electricity bill) to prepare ourselves for these exams.
This lab is just a template lab and has no configs, routing protocols or scenarios to it. I’ll let Chris explain

I created one simple topology that seems to handle 95% of my CCNA & CCNP lab requirements.  It isn’t fancy, but it should save people an hour+ of labor (that is how long it took me to create this topology).

I was getting tired of making one lab per exercise in the Cisco Lab Portfolios and the Certification Zone lab exercises.  So I whipped up a 6 router setup that could handle the majority of the router scenarios I am using for practice.

It consists of 6 7206 routers in a full mesh topology.  Each router has 2 ethernet connections to a dynamips ’switch’, one each in VLAN1 and VLAN2.

Each router has at least 4 frame connections to the other routers in the topology.

Each router also has 1 frame connection to a frame relay switch, with full mesh DLCI between all routers.

I use dynagen, not GNS3.  I created a diagram of the topology using the freeware tool called Network Notepad (http://www.networknotepad.com/) so I can keep track of all the different connections.

Some of the CCNA & CCNP stuff calls for using the Cisco SDM.  I created one generic_startup.txt config file.  It sets the password to cisco for the router, and enables the http server.  It also sets the exec-timeout on con0 to infinite, and disables domain lookup (your pings will work quickly now).  All you have to do is bridge GNS3 or Dynagen to your physical network card, and you can use the Cisco SDM to interface with the routers.  Or SecureACS, the VPN client, VMWare images, etc….

Warning:  this topo uses a lot of RAM.  When I have all 6 routers running, my memory utilization jumps from 900mb to 3.5GB.  When all 6 routers are idle, I am seeing 10-15% CPU utilization - I have an Intel Core2 Quad processor.

Routers Used: 7206

IOS: c7200-advipservicesk9-mz.124-2.T

Image:

Feature of Topology: Full Mesh Ethernet, Frame Relay

Download: GNS3-Labs:: CCNA-CCNP-Full.Mesh.Topology-Chris

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CCNA - Hotspot Questions

Hotspot Routing Question

Question 1:

If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network?
A - R1 will forward the packet out all interfaces
B - R1 will drop this packet because it is not a valid IP address
C - As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table
D - R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF
E - As R1 forwards the frame containing this packet, Sw-A will forward it ti the device assigned the IP address of 192.168.1.255

Answer: B

Question 2:

Users on the 192.168.1.0/24 network must access files located on the Server 1. What route could be configured on router R1 for file requests to reach the server?
A - ip route 0.0.0.0 0.0.0.0 s0/0/0
B - ip route 0.0.0.0 0.0.0.0 209.165.200.226
C - ip route 209.165.200.0 255.255.255.0 192.168.1.250
D - ip route 192.168.1.0 255.255.255.0 209.165.100.250

Answer: A

Quetion 3:

When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork?
A - 0
B - 1
C - 2
D - 3
E - 4

Answer: D

Question 4:

What must be configured on the network in order for users on the Internet to view web pages located on Web Server 2?
A - On router R2,configure a default static route to the 192.168.1.0 network
B - On router r2, configure DNS to resolve the URL assigned to Web Server 2 to the 192.168.1.10 address
C - On router R1, configure NAT to translate an address on the 209.165.100.0/24 network to 192.168.1.10
D - On router R1, configure DHCP to assign a registered IP address on the 209.165.100.0/24 network to Web Server 2

Answer: C

Question 5:

The router address 192.168.1.250 is the default gateway for both the Web Server 2 and Host 1. What is the correct subnet mask for this network?
A - 255.255.255.0
B - 255.255.255.192
C - 255.255.255.250
D - 255.255.255.252

Answer: A

Hotspot Frame-relay Question

Question 1:

What destination Layer 2 address will be used in the frame header containing a packet for host 172.30.4.4?
A - 704
B - 196
C - 702
D - 344

Answer: C

Question 2:

A static map to the S-AMER location is required. Which command should be used to create this map?
A - frame-relay map ip 172.30.0.3 704 broadcast
B - frame-relay map ip 172.30.0.3 196 broadcast
C - frame-relay map ip 172.30.0.3 702 broadcast
D - frame-relay map ip 172.30.0.3 344 broadcast

Answer: B

Question 3:

Which connection uses the default encapsulation for serial interfaces on Cisco routers?
A - The serial connection to the MidEast branch office
B - The serial connection to the DeepSouth branch office
C - The serial connection to the NorthCentral branch office
D - The serial connection to the Multinational Core

Answer: A

Question 4:

If required, what password should be configured on the router in the MidEast branch office to allow a connection to be established with the Dubai router?
A - No password is required
B - Enable
C - Scr
D - Telnet
E - Console

Answer: D

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