Ip Routing(Computer Aptitude > Networking ) Questions and answers for exam Preparation

Computer Aptitude > Networking

IP ROUTING MCQs

Total Questions : 37 | Page 2 of 4 pages

Question 11. What is route poisoning?

It sends back the protocol received from a router as a poison pill, which stops the regular updates.
It is information received from a router that can't be sent back to the originating router.
It prevents regular update messages from reinstating a route that has just come up.
It describes when a router sets the metric for a downed link to infinity.

Discuss Question

Answer: Option D. -> It describes when a router sets the metric for a downed link to infinity.

Question 12. A network administrator views the output from the show ip route command. A network that is advertised by both RIP and IGRP appears in the routing table flagged as an IGRP route. Why is the RIP route to this network not used in the routing table?

IGRP has a faster update timer.
IGRP has a lower administrative distance.
RIP has a higher metric value for that route.
The IGRP route has fewer hops.

Discuss Question

Answer: Option B. -> IGRP has a lower administrative distance.

Question 13. Which of the following is true regarding RIPv2?

It has a lower administrative distance than RIPv1.
It converges faster than RIPv1.
It has the same timers as RIPv1.
It is harder to configure than RIPv1.

Discuss Question

Answer: Option C. -> It has the same timers as RIPv1.

Question 14. What does RIPv2 use to prevent routing loops?
1. CIDR
2. Split horizon
3. Authentication
4. Classless masking
5. Holddown timers

1 and 3
2, 3 and 5
2 and 5
3 and 4

Discuss Question

Answer: Option C. -> 2 and 5

Question 15. Which two of the following are true regarding the distance-vector and link-state routing protocols?
1. Link state sends its complete routing table out all active interfaces on periodic time intervals.
2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.
3. Link state sends updates containing the state of its own links to all routers in the internetwork.
4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.

1 only
3 only
2 and 3 only
None of the above

Discuss Question

Answer: Option C. -> 2 and 3 only

Question 16. IGRP uses which of the following as default parameters for finding the best path to a remote network?
1. Hop count
2. MTU
3. Cumulative interface delay
4. STP
5. Path bandwidth value

1 and 3
3 and 5
2, 3 and 5
All of the above

Discuss Question

Answer: Option B. -> 3 and 5

Question 17. Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator of Acme would like to configure one router with the commands to access the Internet. Which commands could be configured on the Gateway router to allow Internet access to the entire network?
1. Gateway (config) # ip route 0.0.0.0 0.0.0.0 206.143.5.2
2. Gateway (config) # router rip
3. Gateway (config-router) # network 206.143.5.0
4. Gateway (config-router) # network 206.143.5.0 default

1 only
3 only
1, 2 and 4
1 and 4

Discuss Question

Answer: Option D. -> 1 and 4

Question 18. Which of the following statements are true regarding the command ip route 172.16.4.0 255.255.255.0 192.168.4.2?
1. The command is used to establish a static route.
2. The default administrative distance is used.
3. The command is used to configure the default route.
4. The subnet mask for the source address is 255.255.255.0.

1 and 2
2 and 4
3 and 4
All of the above

Discuss Question

Answer: Option A. -> 1 and 2

Question 19. What is split horizon?

Information about a route should not be sent back in the direction from which the original update came.
It splits the traffic when you have a large bus (horizon) physical network.
It holds the regular updates from broadcasting to a downed link.
It prevents regular update messages from reinstating a route that has gone down.

Discuss Question

Answer: Option A. -> Information about a route should not be sent back in the direction from which the original update came.

Question 20. Which statement is true regarding classless routing protocols?
1. The use of discontiguous networks is not allowed.
2. The use of variable length subnet masks is
permitted.
3. RIPv1 is a classless routing protocol.
4. IGRP supports classless routing within the same autonomous system.
5. RIPv2 supports classless routing.