homework3_solution

homework3_solution - Problem 24 a. In the second segment...

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Problem 24 a. In the second segment from Host A to B, the sequence number is 289, source port number is 503 and destination port number is 80. b. If the first segment arrives before the second, in the acknowledgement of the first arriving segment, the acknowledgement number is 289, the source port number is 80 and the destination port number is 503. c. If the second segment arrives before the first segment, in the acknowledgement of the first arriving segment, the acknowledgement number is 249, indicating that it is still waiting for bytes 249 and onwards. d. Host B Host A Ack = 349 Ack = 349 Seq = 249, 40 bytes Seq = 249, 40 bytes Seq = 289, 60 bytes Ack = 289 Timeout interval Timeout interval Problem 25 Host A sends data into the receive buffer faster than Host B can remove data from the buffer. The receive buffer fills up at a rate of roughly 50Mbps. When the buffer is full, Host B signals to Host A to stop sending data by setting RcvWindow = 0. Host A then stops sending until it receives a TCP segment with RcvWindow > 0. Host A will thus
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This note was uploaded on 11/09/2010 for the course ECE 441 taught by Professor Davidstarobinski during the Fall '09 term at BU.

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homework3_solution - Problem 24 a. In the second segment...

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