Advance Routing Protocols

1. Which of the following is false concerning OSPF?

A. It provides a loop-free topology.

B. It is a classful protocol and allows for a hierarchical design.

C. It requires more memory and processing cycles than distance vector protocols.

D. It is complex to configure and difficult to troubleshoot.

Answer: B

OSPF is a classless, not a classful protocol.

A, C, and D are true concerning OSPF.

2. The OSPF process ID is __________.

A. Locally significant and is the router ID

B. Globally significant and must be configured on every router

C. Locally significant

D. OSPF doesn’t use a process ID, but an AS number

Answer: C

The OSPF process ID is locally significant.

A is not true, because the router ID is based on the highest IP address of a loopback or active interface. B is not true, because it is locally significant. D is not true, because OSPF requires a process ID to be configured.

3. Enter the OSPF command to include all of its interfaces in area 0: __________.

A. Network 0.0.0.0 255.255.255.255 area 0

B. Net 0.0.0.0 0.0.0.3 area 1

c. N/W all networks wild card marsk area null

Answer: A

SYMBOL 254 \f "Wingdings" \s 11 network 0.0.0.0 255.255.255.255 area 0.

4. OSPF uses __________ as a metric.

A. Bandwidth

B. Delay

C. Cost

D. Hop count

Answer: C

OSPF uses bandwidth as a metric.

A is used to compute the cost, which is the inverse of the bandwidth. B is used by IGRP and EIGRP. D is used by RIP.

5. An OSPF’s router ID is based on __________.

A. The lowest IP address on its loopback interface, if configured, or the lowest IP address on its active interfaces

B. The highest IP address on its loopback interface, if configured, or the highest IP address on its active interfaces

C. The highest IP address on its active interfaces, if configured, or the highest IP address on its loopback interfaces

D. The lowest IP address on its active interfaces, if configured, or the lowest IP address on its loopback interfaces

Answer: B

An OSPF’s router ID is based on the highest IP address on its loopback interface, if configured, or the highest IP address on its active interfaces.

A is incorrect because specifies lowest. C is incorrect because the loopback is used first, if configured. D is incorrect because the loopback is checked first.

6. OSPF hellos are sent every __________ seconds on a multi-access medium.

A. 5

B. 10

C. 15

D. 40

Answer: B


OSPF hellos are sent every ten seconds.

D is the dead interval timer, and A and C are incorrect timers.

7. Enter the OSPF command to view all of a router’s neighbors: __________.

A. show ip ospf neighbors

B. show ip ospf interfaces

C. show ip ospf

Answer: A

SYMBOL 254 \f "Wingdings" \s 11 show ip ospf neighbor.

8. OSPF supports a ________-layer hierarchical design.

A. 1

B. 2

C. 3

D. Multi

Answer: B

OSPF supports a two-layer hierarchical design: the backbone (area 0) and areas off of the backbone.

A is incorrect because this is a flat design. C is incorrect because only two layers are supported. D is true, but B is more correct.

9. When examining the IP routing table, an EIGRP route will be shown as what letter?

A. I

B. E

C. O

D. D

Answer: D

A D in the routing table indicates an EIGRP route.

A indicates an IGRP route. B indicates an EGP route. C is an OSPF route.

10. EIGRP uses the _________ algorithm to update its routing table.

A. Bellman-Ford

B. Dijkstra

C. DUAL

D. Integrated

Answer: C

EIGRP uses the DUAL algorithm to update its routing table.

A is incorrect because this is what distance vector protocols use. B is incorrect because this is what link state protocols use. D is a nonexistent routing algorithm.

11. EIGRP generates hellos every _________ seconds on LAN segments.

A. 5

B. 10

C. 15

D. 30

Answer: A

EIGRP generates hellos every five seconds.

B, C, and D are incorrect hello periods.

12. EIGRP will route for ___________.

A. IP

B. IP and IPX

C. IP and AppleTalk

D. IP, IPX, and AppleTalk

Answer: D

EIGRP supports three routed protocols: IP, IPX, and AppleTalk.

A is incorrect because it omits IPX and AppleTalk. B is incorrect because it omits

13. A __________ route is the best path to reach a destination within the topology table.

A. Successor

B. Feasible successor

C. Advertised distance

D. Feasible distance

Answer: A

A successor route is the best path to reach a destination within the topology table.

B is incorrect because this is a valid backup route. C refers to a neighbor’s distance to a route. D refers to a router’s distance to a route.

14. Enter the EIGRP command or commands to include the interfaces with 192.168.1.1/26, 192.168.1.64/26, and 192.168.1.128/26 in the routing process: __________.

A. IF YOU DUNNO THEN CLICK TO VIEW ANSWER

Answer: A

NETWORK 192.168.1.0

SYMBOL 254 \f "Wingdings" \s 11 network 192.168.1.0. Remember that this configuration is classful.

15. Enter the EIGRP command to view only the successor routes: __________.

A. IF YOU DUNNO THEN CLICK TO VIEW ANSWER

Answer: A

SHOW IP ROUTE

Use this command to view EIGRP’s successor routes: show ip route.

16. Enter the EIGRP command to view both the successor and feasible successor routes:_______________.

A. IF YOU DUNNO THEN CLICK TO VIEW ANSWER

Answer: A

SHOW IP EIGRP TOPOLOGY

Use this command to view both the successor and feasible successor routes: show ip