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- Question
Which of the following provide inter-switch VLAN communication?
- ISL
- VTP
- 802.1Q
- 802.3Z
Options- A. 2 only
- B. 1 and 3
- C. 2 and 4
- D. 2, 3 and 4
- Correct Answer
- 1 and 3
ExplanationISL is a Cisco-proprietary frame-tagging method. IEEE 802.1Q is the nonproprietary version of frame tagging. - 1. Which command will display all the EIGRP feasible successor routes known to a router?
Options- A. show ip routes *
- B. show ip eigrp summary
- C. show ip eigrp topology
- D. show ip eigrp adjacencies Discuss
- 2. You get a call from a network administrator who tells you that he typed the following into his router:
He tells you he still can't see any routes in the routing table. What configuration error did the administrator make?Router(config)#router ospf 1 Router(config-router)#network 10.0.0.0 255.0.0.0 area 0
Options- A. The wildcard mask is incorrect.
- B. The OSPF area is wrong.
- C. The OSPF Process ID is incorrect.
- D. The AS configuration is wrong. Discuss
- 3. You need the IP address of the devices with which the router has established an adjacency. Also, the retransmit interval and the queue counts for the adjacent routers need to be checked. What command will display the required information?
Options- A. show ip eigrp adjacency
- B. show ip eigrp topology
- C. show ip eigrp interfaces
- D. show ip eigrp neighbors Discuss
- 4. With which network type will OSPF establish router adjacencies but not perform the DR/BDR election process?
Options- A. Point-to-point
- B. Backbone area 0
- C. Broadcast multi-access
- D. Non-broadcast multi-access Discuss
- 5. Which is true regarding EIGRP successor routes?
- A successor route is used by EIGRP to forward traffic to a destination.
- Successor routes are saved in the topology table to be used if the primary route fails.
- Successor routes are flagged as "active" in the routing table.
- A successor route may be backed up by a feasible successor route.
- Successor routes are stored in the neighbor table following the discovery process.
Options- A. 1 and 3
- B. 2 and 3
- C. 1 and 4
- D. 3, 4 and 5 Discuss
- 6. Which command will configure a switch port to use the IEEE standard method of inserting VLAN membership information into Ethernet frames?
Options- A. Switch(config)# switchport trunk encapsulation isl
- B. Switch(config)# switchport trunk encapsulation ietf
- C. Switch(config)# switchport trunk encapsulation dot1q
- D. Switch(config-if)# switchport trunk encapsulation isl
- E. Switch(config-if)# switchport trunk encapsulation dot1q Discuss
- 7. You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?
Options- A. The router is not configured for the new host.
- B. The VTP configuration on the switch is not updated for the new host.
- C. The host has an invalid MAC address.
- D. The switch port the host is connected to is not configured to the correct VLAN membership. Discuss
- 8. Which of the following is true regarding VLANs?
Options- A. You must have at least two VLANs defined in every Cisco switched network.
- B. All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
- C. You should not have more than 10 switches in the same VTP domain.
- D. VTP is used to send VLAN information to switches in a configured VTP domain. Discuss
- 9. Which of the following is true regarding VTP?
Options- A. All switches are VTP servers by default.
- B. All switches are VTP transparent by default.
- C. VTP is on by default with a domain name of Cisco on all Cisco switches.
- D. All switches are VTP clients by default. Discuss
- 10. Which of the following are benefits of VLANs?
- They increase the size of collision domains.
- They allow logical grouping of users by function.
- They can enhance network security.
- They increase the size of broadcast domains while decreasing the number of collision domains.
- They simplify switch administration.
- They increase the number of broadcast domains while decreasing the size of the broadcast domains.
Options- A. 1 and 5
- B. 2 and 4
- C. 1, 3 and 5
- D. 2, 3 and 6 Discuss
Virtual LANs problems
Search Results
Correct Answer: show ip eigrp topology
Explanation:
Any secondary route to a remote network is considered a feasible successor, and those routes are only found in the topology table and used as backup routes in case of primary route failure. You can see the topology table with the
show ip eigrp topology command.
Correct Answer: The wildcard mask is incorrect.
Explanation:
The administrator typed in the wrong wildcard mask configuration. The wildcard should have been 0.0.0.255.
Correct Answer: show ip eigrp neighbors
Explanation:
The
show ip eigrp neighbors command allows you to check the IP addresses as well as the retransmit interval and queue counts for the neighbors that have established an adjacency.
Correct Answer: Point-to-point
Explanation:
No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology. DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-broadcast multi-access (NBMA) network by default.
Correct Answer: 1 and 4
Explanation:
Successor routes are the routes picked from the topology table as the best route to a remote network, so these are the routes that IP uses in the routing table to forward traffic to a remote destination. The topology table contains any route that is not as good as the successor route and is considered a feasible successor, or backup route. Remember that all routes are in the topology table, even successor routes.
Correct Answer: Switch(config-if)# switchport trunk encapsulation dot1q
Explanation:
If you are on a 2950 switch, then the interface command is just
switchport mode trunk, since the 2950 can only run the IEEE 802.1Q version. However, a 3550 can run both ISL and 802.1Q, so you must use the encapsulation command. The argument to choose 802.1Q for a trunking protocol is
dot1q.
Correct Answer: The switch port the host is connected to is not configured to the correct VLAN membership.
Explanation:
This question is a little vague, but the best answer is that the VLAN membership for the port is not configured.
Correct Answer: VTP is used to send VLAN information to switches in a configured VTP domain.
Explanation:
Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunk Protocol (VTP) is used to propagate VLAN information across a trunked link.
Correct Answer: All switches are VTP servers by default.
Explanation:
All Cisco switches are VTP servers by default. No other VTP information is configured on a Cisco switch by default. You must set the VTP domain name on all switches to be the same domain name or they will not share the VTP database.
Correct Answer: 2, 3 and 6
Explanation:
VLANs break up broadcast domains in a switched layer 2 network, which means smaller broadcast domains. They allow configuration by logical function instead of physical location and can create some security if configured correctly.
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