TCP sequence and ACK numbers with segment loss
Consider the figure below in which a TCP sender and receiver communicate over a connection in which the sender->receiver segments may be lost. The TCP sender sends an initial window of 4 segments. Suppose the initial value of the sender->receiver sequence number is 306 and the first 4 segments each contain 665 bytes. The delay between the sender and receiver is 7 time units, and so the first segment arrives at the receiver at t=8. As shown in the figure below, 1 of the 4 segment(s) are lost between the segment and receiver.
Question List
1. Give the sequence numbers associated with each of the 4 segments sent by the sender. Format your answer as: a,b,c,...
2. Give the ACK numbers the receiver sends in response to each of the segments. If a segment never arrives use 'x' to denote it, and format your answer as: a,b,c,...
Solution
1. The sender's sequence numbers are: 306,971,1636,2301
2. The receiver's ACKs are: 971,1636,2301,x
That's incorrect
That's correct
The answer was: 306,971,1636,2301
The answer was: 971,1636,2301,x