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Suppose the bandwidth on a point-to-point link is 2 Mbps and the one-way propagation delay is 9 ms.
Assume that size of each packet is 125 bytes. Also assume that the size of ACK packet is negligible.
Answer each of the following for both go-back-n and selective repeat schemes.
Assuming that the link is error-free, what should be the minimum window size to achieve a throughput of 1
Mbps?
Suppose packet with sequence number 3 is lost during transmission. Assuming the above window size, W,
and the sequence number space [0, 2W-1], how many packets get retransmitted and what are their
sequence numbers
Sample Solution
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