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Computer Networks
Congestion Control
Q
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 ___________
AA. Packet which are not lost
BB. Only those packets which are lost or corrupted
CC. Packet from starting
DD. All the packets
Correct Answer:
B. B. Only those packets which are lost or corrupted
Explanation:
In Selective Repeat, the sender side uses a searching algorithm to find the packets which need to be retransmitted based on the negative acknowledgements received and then resends only those packets thus saving bandwidth.
