ECE4500_Homework7_solutions

ECE4500_Homework7_solutions - Virginia Tech ECE 4500 Spring...

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Virginia Tech ECE 4500 Spring 2009 Homework 7 Due at 11:59 p.m. (EDT) on April 26 Name: _______ SOLUTIONS ___________________ ID Number: __________________________ Instructions: Enter your answers into a single Word or PDF document. Show your work to a reasonable extent, and clearly indicate your answers . Instructions for submitting your work will be provided at Blackboard. 1. Hosts A and B are communicating over a TCP connection, and Host B has already received from Host A all bytes up through (and including) byte 248. Suppose Host A then sends two segments to Host B back-to-back. The first and second segments contain 40 and 60 bytes of data, respectively. In the first segment, the sequence number is 249, the source port number is 503, and the destination port number is 80. Host B sends an acknowledgment (ACK) whenever it receives a segment from Host A. a) In the second segment sent from Host A to Host B, what are the sequence number, source port number, and destination port number? Sequence number: 289
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ECE4500_Homework7_solutions - Virginia Tech ECE 4500 Spring...

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