Computer Networks Questions & Answers – Virtual Circuit MCQ أسئله شبكات بالأجابات الجزء السابع والثلاثون

Computer Networks Questions & Answers – Virtual Circuit

1. Which of the following is not a characteristic of Virtual Circuit Network?
a) There are setup and teardown phases in addition to the data transfer phase
b) Resources can be allocated during setup phase or on demand
c) All packets follow the same path established during the connection
d) Virtual circuit network is implemented in application layer

Answer: d
Explanation: Virtual circuit network is normally implemented in datalink layer.

2. The address that is unique in the scope of the network or internationally if the network is part of an international network is called as
a) Global address
b) Network address
c) Physical address
d) IP address

Answer: a
Explanation: This address is used to create a virtual circuit identifier.

3. The Identifier that is used for data transfer in virtual circuit network is
a) Global address
b) Virtual circuit identifier
c) Network identifier
d) IP identifier

Answer: b
Explanation: Virtual circuit identifier is used for data transfer and has switch scope.

4. Which of the following is not a phase of virtual circuit network?
a) Setup phase
b) Datatransfer phase
c) Termination phase
d) Teardown phase

Answer: c
Explanation: Virtual circuit network does not contain termination phase.

5. Steps required in setup process are
a) Setup request and acknowledgement
b) Setup request and setup response
c) Setup request and setup termination
d) Setup and termination steps

Answer: a
Explanation: Steps required in setup process are Setup request and acknowledgement.

6. During teardown phase, source after sending all the frames to destination sends……..to notify termination
a) Teardown response
b) Teardown request
c) Termination request
d) Termination response

Answer: b
Explanation: Source after sending all the frames to destination sends teardown request to which, destination sends teardown response.

7. Delay if, resource allocated during setup phase during data transfer is
a) Constant
b) Increases for each packet
c) Same for each packet
d) Different for each packet

Answer: c
Explanation: If resource allocated during setup phase, delay is same for each packet.

8. Delay if, resource allocated on demand during data transfer is
a) Constant
b) Increases for each packet
c) Same for each packet
d) Different for each packet

Answer: d
Explanation: If resource allocated on demand, delay is different for each packet.

9. In virtual circuit network, delay times for setup and teardown respectively are
a) 1 and 1
b) 1 and 2
c) 2 and 1
d) 2 and 2

Answer: a
Explanation: Delay time for setup and teardown is one each.

10. In data transfer phase, the table contains how many columns?
a) 1
b) 2
c) 3
d) 4

Answer: d
Explanation: Table has 4 columns. Port and VCI for both incoming and outgoing data.

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