Question: Suppose that an old SYN segment from host A arrives at a different host B. In what ways does threewayhansdshaking in TCP prevent connection from

Suppose that an old SYN segment from host A arrives at a different host B. In what ways does threewayhansdshaking in TCP prevent connection from being wrongly established?

Possible answers:

-Host B answers with SYN. When A gets this response, it will start tearing down the connection by sending FIN-segment.

-Host B does not respond, because the time stamp in the SYN segment from A is old. A will try to resend three times before giving up.

-Host B responds withNAK because the time stamp in the SYN segment from A is old. When A receives this response, it will respond with a NAK so that B closes its part of the connection.

-Host B responds with SYNACK. However, when A receives this response, it will not complete the connection with an ACK segment because it has not attempted to initiate a connection now. Thus, the connection stays half-open at B until B closes it.

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