Computer Network Mcqs

Page No. 36

In Go-Back-N window, when the timer of the packet times out, several packets have to be resent even some may have arrived safe. Whereas in Selective Repeat window, the sender resends ___________


aPacket which are not lost

✖


bOnly those packets which are lost or corrupted

✓


cPacket from starting

✖


dAll the packets

✖



Retransmission of packets must not be done when _______


a Packet is lost

✖


b Packet is corrupted

✖


cPacket is needed

✖


dPacket is error-free

✓


View Answer Packet is error-free

In open-loop control, policies are applied to __________


aRemove after congestion occurs

✖


bRemove after sometime

✖


cPrevent before congestion occurs

✓


dPrevent before sending packets

✖



Two broad categories of congestion control are


aOpen-loop and Closed-loop

✓


bOpen-control and Closed-control

✖


cActive control and Passive control

✖


dActive loop and Passive loop

✖



In data transfer phase, how many columns does the table contain?


a1

✖


b 2

✖


c3

✖


d4

✓


View Answer 4

In virtual circuit network, the number of delay times for setup and teardown respectively are _______


a1 and 1

✓


b1 and 2

✖


c2 and 1

✖


d2 and 2

✖


View Answer 1 and 1

Delay of the resource allocated on demand during data transfer is ________


aconstant

✖


b increases for each packet

✖


csame for each packet

✖


ddifferent for each packet

✓



Delay of the resource allocated during setup phase during data transfer is ________


aconstant

✖


bincreases for each packet

✖


csame for each packet

✓


ddifferent for each packet

✖


View Answer same for each packet

During teardown phase, the source, after sending all the frames to destination, sends a _____ to notify termination.


ateardown response

✖


bteardown request

✓


ctermination request

✖


dtermination response

✖


View Answer teardown request

Steps required in setup process are ___________


aSetup request and acknowledgement

✓


bSetup request and setup response

✖


cSetup request and setup termination

✖


d Setup and termination steps

✖



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