Computers and Technology, 04.03.2021 23:20 gorbyalexis

A and B are communicating over TCP connection. B Sends a packet with ACK number 400, which is received by A. Suppose A sends two segments to B, one immediately after the
other. The first and second segments contain 50 and 70 bytes of data respectively. In the first
segment, the source port number is 1028 and destination port number is 21. B sends an ACK
after receiving each packet.
i. What are the sequence number, source port and destination port of the second
segments sent from A to B? Briefly justify your answer.
ii. Assume the first segment arrives before the second segment, son B sends and
acknowledgement after each segment receives. What is the sequence number in each
acknowledgment?

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