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im learning for my exams and i found an old exercise with the solution from an older semester:

"A TCP connection is established between two computers and data is transferred. Fill in the five missing values in the boxes in the specified timing diagram. Explanation: All set TCP flags are given. Seq and Ack are the TCP sequence and acknowledgment numbers. The size of the user data (payload) is given in square brackets. If the brackets are missing, no user data is transmitted."

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But i dont understand what ACK[1448] and PSH/ACK[173] for example do and how all the Seq- und Ack- Numbers after the connection esthablishment (or 3 way handshake) are created... I hope someone can help me :)

christofeckerlin
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  • *"But i dont understand what ACK[1448] and PSH/ACK[173] for example do and how all the Seq- und Ack- Numbers after the connection esthablishment (or 3 way handshake) are created... "* - This question is a) too broad and b) off-topic here. I think you need to study the basics of how TCP connections are created and the role of sequence numbers in establishing a connection and transferring data in a reliable way. These are basically the basics of TCP, Please use an appropriate book, article or whatever learning material you got for your exams. – Steffen Ullrich Sep 28 '22 at 03:09

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