Which sequence describes the TCP four-way handshake for terminating a connection?

The TCP four-way handshake for terminating a connection involves a specific sequence of messages exchanged between the two endpoints to ensure a graceful and complete disconnection. The correct sequence is as follows:

1. The first device that wants to terminate the connection sends a FIN (Finish) segment to signal that it has finished sending data.

2. The receiving device acknowledges this by sending back an ACK (Acknowledge) segment, confirming receipt of the FIN. This interaction indicates that the first side can no longer send data, but can still receive data from the other side.

3. The receiving device, if it is also ready to close the connection, will then send its own FIN segment to indicate that it has finished sending data.

4. Finally, the first device responds with an ACK to confirm that it has received the FIN from the other device.

This sequence (FIN -> ACK -> FIN -> ACK) ensures that both parties have acknowledged the closure of the connection and have managed to communicate their state clearly, preventing any potential data loss and ensuring all data is properly transferred before the connection is terminated.

The other options do not represent the proper sequence needed for a four-way handshake, leading to misunderstandings about how a connection is gracefully closed in TCP. The proper