Forouzan: MCQ in Network Layer: Delivery, Forwarding and Routing

(Last Updated On: April 22, 2018)
MCQs for Network Layer: Delivery, Forwarding and Routing
This is the MCQ in Network Layer: Delivery, Forwarding and Routing from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in datacom, topic in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. In _______ delivery, the deliverer of the IP packet and the destination are on different networks.

A) a connection-oriented

B) a direct

C) an indirect

D) none of the above

View Answer:

Answer: Option C

Solution:

2. The input and output ports of a router perform the ________ layer functions of the router.

A) physical and data link

B) network

C) transport

D) none of the above

View Answer:

Answer: Option A

Solution:

3. _________ broadcasts packets, but creates loops in the systems.

A) Forwarding

B) Flooding

C) Backwarding

D) none of the above

View Answer:

Answer: Option B

Solution:

4. CBT is a ________ protocol that uses a core as the root of the tree.

A) source-based

B) group-shared

C) a or b

D) none of the above

View Answer:

Answer: Option B

Solution:

5. RPF guarantees that each network receives only ____ of the multicast packet.

A) one copy

B) two copies

C) a or b

D) none of the above

View Answer:

Answer: Option D

Solution:

6. Routing between autonomous systems is referred to as ____________.

A) interdomain routing

B) intradomain routing

C) both a and b

D) none of the above

View Answer:

Answer: Option A

Solution:

7. DVMRP is a ________routing protocol, based on RIP.

A) source-based

B) group-shared

C) both a and b

D) none of the above

View Answer:

Answer: Option A

Solution:

8. In _______, the router may forward the received packet through several of its interfaces.

A) unicasting

B) multicasting

C) broadcasting

D) none of the above

View Answer:

Answer: Option B

Solution:

9. __________ is an implementation of multicast distance vector routing. It is a source-based routing protocol, based on RIP.

A) MOSPF

B) DVMRP

C) CBT

D) none of the above

View Answer:

Answer: Option B

Solution:

10. In multicast routing, each involved router needs to construct a ________ path tree for each group.

A) average

B) longest

C) shortest

D) none of the above

View Answer:

Answer: Option C

Solution:

11. In ________, the multicast packet must reach only those networks that have active members for that particular group.

A) RPF

B) RPB

C) RPM

D) none of the above

View Answer:

Answer: Option C

Solution:

12. In ________, each node maintains a vector (table) of minimum distances to every node.

A) path vector

B) distance vector

C) link state

D) none of the above

View Answer:

Answer: Option B

Solution:

13. A _______ message tells an upstream router to start sending multicast messages for a specific group through a specific router.

A) weed

B) graft

C) prune

D) none of the above

View Answer:

Answer: Option B

Solution:

14. RPB guarantees that each destination receives _________ of the packet.

A) one copy

B) no copies

C) multiple copies

D) none of the above

View Answer:

Answer: Option A

Solution:

15. Emulation of ________ through ___________ is not efficient and may create long delays.

A) unicasting; multiple unicasting

B) multicasting; multiple unicasting

C) broadcasting; multicasting

D) none of the above

View Answer:

Answer: Option B

Solution:

16. MOSPF is a _______ protocol.

A) data-driven

B) command-driven

C) both a and b

D) none of the above

View Answer:

Answer: Option A

Solution:

17. RPB creates a shortest path _______ tree from the source to each destination.

A) unicast

B) multicast

C) broadcast

D) none of the above

View Answer:

Answer: Option C

Solution:

18. The _______ protocol allows the administrator to assign a cost, called the metric, to each route.

A) OSPF

B) RIP

C) BGP

D) none of the above

View Answer:

Answer: Option A

Solution:

19. A one-to-all communication between one source and all hosts on a network is classified as a _______ communication.

A) unicast

B) multicast

C) broadcast

D) none of the above

View Answer:

Answer: Option C

Solution:

20. For purposes of routing, the Internet is divided into ___________.

A) wide area networks

B) autonomous networks

C) autonomous systems

D) none of the above

View Answer:

Answer: Option C

Solution:

21. The metric used by _______ is the hop count.

A) OSPF

B) RIP

C) BGP

D) none of the above

View Answer:

Answer: Option B

Solution:

22. A static table is one _______.

A) with manual entries

B) which is updated automatically

C) either a or b

D) none of the above

View Answer:

Answer: Option A

Solution:

23. The idea of address aggregation was designed to alleviate the increase in routing table entries when using ________.

A) classful addressing

B) classless addressing

C) both a and b

D) none of the above

View Answer:

Answer: Option B

Solution:

24. In _______ forwarding, the full IP address of a destination is given in the routing table.

A) next-hop

B) network-specific

C) host-specific

D) default

View Answer:

Answer: Option C

Solution:

25. The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing.

A) distance vector

B) link state

C) path vector

D) none of the above

View Answer:

Answer: Option A

Solution:

26. ____________ is a group of networks and routers under the authority of a single administration.

A) An autonomous system

B) An area

C) both a and b

D) none of the above

View Answer:

Answer: Option A

Solution:

27. In the group-shared tree approach, _________ involved in multicasting.

A) only the core router is

B) all routers are

C) only some routers are

D) none of the above

View Answer:

Answer: Option A

Solution:

28. In OSPF, a ________ link is a network is connected to only one router.

A) point-to-point

B) transient

C) stub

D) none of the above

View Answer:

Answer: Option C

Solution:

29. _______ adds pruning and grafting to _______ to create a multicast shortest path tree that supports dynamic membership changes.

A) RPM; RPB

B) RPB; RPM

C) RPF: RPM

D) none of the above

View Answer:

Answer: Option A

Solution:

30. In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers.

A) point-to-point

B) transient

C) stub

D) none of the above

View Answer:

Answer: Option D

Solution:

Forouzan: MCQ in Network Layer: Delivery, Forwarding and Routing
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