Consider two hosts A and B that are quite far apart. They are communicating using Selective Repeat with a window size of

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Consider Two Hosts A And B That Are Quite Far Apart They Are Communicating Using Selective Repeat With A Window Size Of 1 (131.56 KiB) Viewed 44 times

Consider two hosts A and B that are quite far apart. They are communicating using Selective Repeat with a window size of 6 and a sequence number space of 4 bits. Assuming this is a one-way data flow and A is the source of the data and B is the sink, and packets may be lost or corrupted but without reordering. At present, the receive window at B is at [5,6,7,8,9,10). Consider the following (independent) events. i. B receives an uncorrupted data packet with sequence number 7. What will B do? Given this scenario, estimate what are the possible sender windows at A at this moment? Clearly explain your answer. ii. B receives an uncorrupted data packet with sequence number 0. Is that possible? If so, what will B do and estimate what are the possible sender windows at A at this moment? If not, explain why it is not possible. Clearly explain your answer. iii. B receives an uncorrupted data packet with sequence number 12. Is that possible? If so, what will B do and estimate what are the possible sender windows at A at this moment? If not, explain why it is not possible. Clearly explain your answer.