Question

A TCP client is connected to a TCP server initiates connection termination that takes it through FIN_WAIT_1 and FIN_WAIT_2 states. Give the sequence of segments exchanged during this termination process. Assume that there are no packet losses and neither side has any unacknowledged data prior to the connection termination sequence. A. ACK First segment B. FIN Third segment Second segment C. FIN (by client) ✓ Fourth segment

Answer 1

The TCP connection termination initiated by the client involves a sequence of segments: the client sends a FIN, the server responds with an ACK, the server then sends a FIN, and the client responds with a final ACK.

Step-by-step explanation:

The TCP connection termination process involves a four-way handshake. Here is the sequence of segments exchanged during this termination:

1. The TCP client sends a FIN segment to the server, indicating that it wants to close its side of the connection. This puts the client in the FIN_WAIT_1 state.
2. The TCP server acknowledges this with an ACK segment. Upon receiving this ACK, the client transitions to the FIN_WAIT_2 state.
3. The TCP server then sends its own FIN segment, signaling it is finished sending data.
4. The TCP client responds with an ACK segment, acknowledging the server's FIN. After sending this final ACK, the TCP client enters the TIME_WAIT state.