Question

Which of the following statements is not true about the TCP opening and closing of connections?

a. TCP uses a three-way handshake to open a connection.

b. The sequence number is a random number selected by the sending computer.

c. The SYN bit is set to 1 in the last segment used to close a connection.

d. The first segment used to open a connection has the SYN bit set to 1.

Answer 1

Answer: c.)

Step-by-step explanation:

The bit SYN is used in order to synchronize segment numbers in the sender and receiving processes in hosts that are trying to start a data transmitting session between them.

It is initiated by the sending end, that set this bit to " 1", in the TCP header, starting which is known as a "3-way handshake process".

The bit SYN is not used in order to close a connection, the FIN bit is used for this purpose.

If one process set the FIN bit to "1", this means that it has no more data to send.