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Forouzan: MCQ in Switching

Forouzan: MCQ in Switching

This is the MCQ in Switching from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in datacom, a topic in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.In this particular topic you have learned the three fundamental switching methods: circuit switching, packet switching, and message switching. If you skip the summary visit Switching which is a method in which communication devices are connected to one another efficiently.
Watch Audio MCQ in Switching

Practice Exam Test Questions

Choose the letter of the best answer in each questions.

1. Packet-switched networks can also be divided into _________ subcategories: virtual-circuit networks and datagram networks.

A)   five

B)   three

C)   two

D)   four

View Answer:

Answer: Option C

Solution:

2. In __________, each packet is treated independently of all others.

A)   circuit switching

B)   datagram switching

C)   frame switching

D)   none of the above

View Answer:

Answer: Option B

Solution:

3. Based on the Clos criteria, if N = 200, then k must be equal to or greater than _________.

A)   19

B)   21

C)   31

D)   41

View Answer:

Answer: Option A

Solution:

4. In _________, resources are allocated on demand.

A)   circuit switching

B)   datagram switching

C)   frame switching

D)   none of the above

View Answer:

Answer: Option B

Solution:

5. In _______ switching, the paths in the circuit are separated from one another spatially.

A)   time-division

B)   two-dimensional

C)   space-division

D)   three-dimensional

View Answer:

Answer: Option C

Solution:

6. In a ________ network, two types of addressing are involved: global and local.

A)   datagram

B)   virtual-circuit

C)   circuit-switched

D)   none of the above

View Answer:

Answer: Option B

Solution:

7. In a three-stage space division switch, if N = 200, the number of crosspoints is ______.

A)   40,000

B)   less than 40,000

C)   greater than 40,000

D)   greater than 100,000

View Answer:

Answer: Option B

Solution:

8. A ________ network is made of a set of switches connected by physical links, in which each link is divided into n channels.

A)   circuit-switched

B)   line-switched

C)   frame-switched

D)   none of the above

View Answer:

Answer: Option A

Solution:

9. In a banyan switch, for 8 inputs and 8 outputs, we have _____ micro-switches at each stage.

A)   2

B)   3

C)   4

D)   8

View Answer:

Answer: Option C

Solution:

10. In _________, there is no resource allocation for a packet.

A)   circuit switching

B)   datagram switching

C)   frame switching

D)   none of the above

View Answer:

Answer: Option B

Solution:

11. A _________ network is a cross between a circuit-switched network and a datagram network. It has some characteristics of both.

A)   packet-switched

B)   frame-switched

C)   virtual-circuit

D)   none of the above

View Answer:

12. The most popular technology in time-division switching is called the _________.

A)   TSI

B)   STI

C)   ITS

D)   none of the above

View Answer:

Answer: Option A

Solution:

13. A switched WAN is normally implemented as a _______ network.

A)   virtual-circuit

B)   datagram

C)   circuit-switched

D)   none of the above

View Answer:

Answer: Option A

Solution:

14. We can say that a packet switch has _______ types of components.

A)   four

B)   three

C)   two

D)   none of the above

View Answer:

Answer: Option A

Solution:

15. In a one-stage space division switch, if N = 200, the number of crosspoints is ______.

A)   20,000

B)   40,000

C)   30,000

D)   10,000

View Answer:

Answer: Option B

Solution:

16. In a banyan switch, for 8 inputs and 8 outputs, we have _____ stages.

A)   2

B)   3

C)   4

D)   8

View Answer:

Answer: Option B

Solution:

17. A switch in a datagram network uses a routing table that is based on the ______ address.

A)   destination

B)   source

C)   local

D)   none of the above

View Answer:

Answer: Option A

Solution:

18. Traditionally, _____ methods of switching have been important.

A)   six

B)   five

C)   four

D)   three

View Answer:

Answer: Option D

Solution:

19. The network layer in the Internet is designed as a __________ network.

A)   circuit-switched

B)   datagram

C)   virtual-circuit

D)   none of the above

View Answer:

Answer: Option B

Solution:

20. A ________ switch combines space-division and time-division technologies to take advantage of the best of both.

A)   SSS

B)   TST

C)   TTT

D)   none of the above

View Answer:

Answer: Option B

Solution:

21. In _______, the resources need to be reserved during the setup phase; the resources remain dedicated for the entire duration of data transfer phase until the teardown phase.

A)   frame switching

B)   datagram switching

C)   circuit switching

D)   none of the above

View Answer:

22. Based on the Clos criteria, if N = 200, then n must be equal to or greater than ____.

A)   40

B)   30

C)   20

D)   10

View Answer:

Answer: Option D

Solution:

23. Circuit switching takes place at the ________ layer.

A)   physical

B)   data line

C)   network

D)   transport

View Answer:

Answer: Option A

Solution:

24. A ________ switch combines crossbar switches in several (normally three) stages.

A)   multiple path

B)   multiple crossbar

C)   multistage

D)   none of the above

View Answer:

Answer: Option C

Solution:

25. In _______ there are no setup or teardown phases.

A)   circuit switching

B)   datagram switching

C)   frame switching

D)   none of the above

View Answer:

Answer: Option B

Solution:

26. We can divide today’s networks into ____ broad categories.

A)   five

B)   four

C)   three

D)   two

View Answer:

Answer: Option C

Solution:

27. A ________ switch is a multistage switch with microswitches at each stage that route the packets based on the output port represented as a binary string.

A)   TSI

B)   banyan

C)   crossbar

D)   none of the above

View Answer:

Answer: Option B

Solution:

28. The _______ address in the header of a packet in a datagram network normally remains the same during the entire journey of the packet.

A)   destination

B)   source

C)   local

D)   none of the above

View Answer:

Answer: Option A

Solution:

29. Based on the Clos criteria, if N = 200, then the minimum number of crosspoints is greater than or equal to _______.

A)   42,000

B)   20,000

C)   18,000

D)   15,200

View Answer:

Answer: Option D

Solution:

30. The simplest type of switching fabric is the ______ switch.

A)   crossbar

B)   crosspoint

C)   TSI

D)   STS

View Answer:

Answer: Option A

Solution:

Complete List of Chapter Quiz in Data Communications and Networking

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