In this section of Data Communication and Networking – Switching Network MCQ (multiple choice) Based Short Questions and Answers ,it cover the below lists of topics.All the Multiple Choice Question and Answer (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz A forouzan.
- Switching methods MCQs.
- circuit switching MCQs.
- packet switching MCQs.
- message switching MCQs.
- Space-division switch , Time-division switches MCQs.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. A _________ network is a cross between a circuit-switched network and a datagram network. It has some characteristics of both.
- virtual-circuit
- packet-switched
- frame-switched
- none of the above
A. virtual-circuit
2. We can say that a packet switch has _______ types of components
- two
- three
- four
- none of the above
C. four
3. The simplest type of switching fabric is the ______ switch
- crosspoint
- crossbar
- TSI
- STS
B. crossbar
4. 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
- crossbar
- TSI
- banyan
- none of the above
C. banyan
5. In a banyan switch, for 8 inputs and 8 outputs, we have _____ stages
- 8
- 4
- 3
- 2
C. 3
6. In a banyan switch, for 8 inputs and 8 outputs, we have _____ microswitches at each stage.
- 8
- 4
- 3
- 2
B. 4
7. A ________ switch combines space-division and time-division technologies to take advantage of the best of both.
- TST
- SSS
- TTT
- none of the above
A. TST
8. The most popular technology in time-division switching is called the _________
- STI
- ITS
- TSI
- none of the above
C. TSI
9. Based on the Clos criteria, if N = 200, then n must be equal to or greater than ____
- 10
- 20
- 30
- 40
A. 10
10. Based on the Clos criteria, if N = 200, then k must be equal to or greater than ____
- 21
- 19
- 31
- 41
B. 19
11. Based on the Clos criteria, if N = 200, then the minimum number of crosspoints is greater than or equal to _______
- 15,200
- 18,000
- 42,000
- 20,000
A. 15,200
12. In a one-stage space division switch, if N = 200, the number of crosspoints is ______
- 10,000
- 20,000
- 40,000
- 30,000
C. 40,000
13. In a three-stage space division switch, if N = 200, the number of crosspoints is ______
- 40,000
- greater than 40,000
- less than 40,000
- greater than 100,000
C. less than 40,000
14. A ________ switch combines crossbar switches in several (normally three) stages
- multistage
- multiple crossbar
- multiple path
- none of the above
A. multistage
15. In _______ switching, the paths in the circuit are separated from one another spatially
- time-division
- space-division
- two-dimensional
- three-dimensional
B. space-division
16. A switched WAN is normally implemented as a _______ network
- virtual-circuit
- datagram
- circuit-switched
- none of the above
A. virtual-circuit
17. In a ________ network, two types of addressing are involved: global and local
- virtual-circuit
- datagram
- circuit-switched
- none of the above
A. virtual-circuit
18. The network layer in the Internet is designed as a __________ network
- virtual-circuit
- datagram
- circuit-switched
- none of the above
B. datagram
19. A switch in a datagram network uses a routing table that is based on the ______ address
- source
- destination
- local
- none of the above
B. destination
20. The _______ address in the header of a packet in a datagram network normally remains the same during the entire journey of the packet
- source
- destination
- local
- none of the above
B. destination
21. Traditionally, _____ methods of switching have been important.
- four
- three
- five
- six
B. three
22. We can divide today's networks into ____ broad categories.
- four
- three
- five
- two
B. three
23. Packet-switched networks can also be divided into ______subcategories: virtual-circuit networks and datagram networks
- four
- three
- two
- five
C. two
24. A ________ network is made of a set of switches connected by physical links, in which each link is divided into n channels.
- line-switched
- frame-switched
- circuit-switched
- none of the above
C. circuit-switched
25. Circuit switching takes place at the ________ layer.
- data line
- physical
- network
- transport
B. physical
26. 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.
- datagram switching
- circuit switching
- frame switching
- none of the above
B. circuit switching
27. In _________, there is no resource allocation for a packet.
- datagram switching
- circuit switching
- frame switching
- none of the above
A. datagram switching
28. In _________, resources are allocated on demand.
- datagram switching
- circuit switching
- frame switching
- none of the above
A. datagram switching
29. In __________, each packet is treated independently of all others.
- datagram switching
- circuit switching
- frame switching
- none of the above
A. datagram switching
30. In _______ there are no setup or teardown phases.
- datagram switching
- circuit switching
- frame switching
- none of the above
A. datagram switching
