In Three-Way Handshaking process, the situation where both the TCP’s issue an active open is ___________(a) Mutual open(b) Mutual Close(c) Simultaneous open(d) Simultaneous closeI had been asked this question in an interview.My doubt is from TCP-2 topic in chapter Transport Layer of Computer Network

In Three-Way Handshaking process, the situation where both the TCP’s

1.	In Three-Way Handshaking process, the situation where both the TCP’s issue an active open is ___________(a) Mutual open(b) Mutual Close(c) Simultaneous open(d) Simultaneous closeI had been asked this question in an interview.My doubt is from TCP-2 topic in chapter Transport Layer of Computer Network
Answer» Correct choice is (c) Simultaneous open The best I can explain: In simultaneous open situation, TWO NODES send an SYN signal to each other and start a TCP CONNECTION. Here, both TCP nodes transmit a SYNC+ACK SEGMENT to each other and a connection is established between them. This doesn’t happen usually, because both sides have to know which port on the other SIDE to send to.

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