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In the exercise below, assume the following: link MTU is 1500 bytes.

In the exercise below, assume the following:

link MTU is 1500 bytes.

IP overhead is 20 bytes

TCP overhead is 32 bytes

ACKs may be delayed for a short while and then sent (called a delayed ack), but once 2 in-order segments arrive, a cumulative ACK for both is sent immediately.

Assume an initial window size of 4 TCP segments. (Ignore subsequent changes to window size due to flow control and congestion control considerations for the purpose of this exercise.)


Exercise 1 : Suppose a TCP client sends an application request to a TCP server with a data length of 429 bytes. Suppose the server responds with application data of length 7643 bytes. Draw a time sequence diagram showing the TCP handshake and data/ack messages with seq numbers, ack numbers and packet length identified for each message.

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