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Q5. Suppose Host A and Host B use a GBN protocol with window size N = 3 and a long enough range of sequence numbers.
Q5. Suppose Host A and Host B use a GBN protocol with window size N = 3 and a long enough range of sequence numbers. Assume Host A sends six application messages to Host B and that all messages are correctly received, except for the first acknowledgment and the fifth data segment. Draw a timing diagram (similar to the Figure below), showing the data segments and the acknowledgments sent along with the corresponding sequence and acknowledge numbers, respectively. Sender Receiver send pkto send pkti ICV pkto send ACKO send pkt2 TCV pkti send ACKI X (los) send pkt 3 (wait) rev pkt3, discard send ACK1 rev ACKO send pkt 4 rev ACKI send pkt 5 rev pkt4, discard send ACKI pkt2 timeout send pkt2 send pkt 3 send pkt 4 send pkt 5 rev pkt), discard send ACKI rev pkt2, deliver send ACK2 rev pkt3, deliver send ACK3 Go-back-N in operation
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