Describe the situation that causes TCP to move from the state FIN-WAIT-1 to CLOSINGGroup of answer choicesThe actively closing side has sent an acknowledgment to the other side's FIN.The side of the connection that is actively closing the connection has completed the handshake and is waiting to be certain no packets remain in the network.The passively closing side has sent an acknowledgment to the other side's FIN.The side of the connection that is actively closing the connection recieves a FIN from the other side before receiving the ACK of it's own FIN.The side of the connection that is actively closing the connection has sent a FIN.
Question
Describe the situation that causes TCP to move from the state FIN-WAIT-1 to CLOSINGGroup of answer choicesThe actively closing side has sent an acknowledgment to the other side's FIN.The side of the connection that is actively closing the connection has completed the handshake and is waiting to be certain no packets remain in the network.The passively closing side has sent an acknowledgment to the other side's FIN.The side of the connection that is actively closing the connection recieves a FIN from the other side before receiving the ACK of it's own FIN.The side of the connection that is actively closing the connection has sent a FIN.
Solution
The Transmission Control Protocol (TCP) moves from the state FIN-WAIT-1 to CLOSING when the side of the connection that is actively closing the connection receives a FIN from the other side before receiving the ACK of its own FIN.
Here are the steps:
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The side of the connection that is actively closing the connection sends a FIN to the other side, indicating that it has no more data to send. This is when the TCP connection enters the FIN-WAIT-1 state.
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Before the actively closing side receives an ACK for its FIN from the other side, it receives a FIN from the other side. This means that the other side also has no more data to send.
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Upon receiving this FIN from the other side, the TCP connection moves from the FIN-WAIT-1 state to the CLOSING state.
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The actively closing side then sends an ACK to the other side's FIN, and waits for an ACK to its own FIN.
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Once it receives the ACK to its own FIN, the connection moves to the TIME-WAIT state, and eventually closes after a certain period of time.
Similar Questions
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The figure below shows the timing diagram for a TCP connection between Hosts A and B from the beginning to the end. First, we see the 3-way handshake. The client (Host A) combines 50 bytes of data with the last ACK of the 3-way handshake. The server (Host B) combines 100 bytes of data with the ACK packet sent back to the client. The client (Host A) closes the connection at this point which results in a FIN segment being sent to the server (Host B), which is combined with the ACK for the 100-byte data. After a little while, the server (Host B) closes the connection as well.Enter the numeric values for a, b, c, d, e and f in the spaces provided below. No explanation is necessary. 0.5 mark for each.
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