If a client sends an ISN of 2 to a server and a server responds with an ISN of 1 to the client, what is the final stage of the TCP three-way handshake?
- Client sends an acknowledgement of 2.
- Server sends an acknowledgement of 2.
- Client sends an acknowledgement of 3.
- Server sends an acknowledgement of 3.
- Client sends a new ISN of 3.
- Server sends a new ISN of 2.
Explanation: The three-way handshake starts when a client device sends an ISN to the server. The server responds with an acknowledgement of the client ISN+1 and its own ISN. The last step in the process is when the client acknowledges the server ISN by responding with a value of the server ISN+1.
Exam with this question: CCNA 1 ITNv6 Chapter 7: Check Your Understanding
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