What is the three-way handshake sequence used to initiate TCP connections?

A.
ACK, SYN/ACK, ACK

B.
SYN, SYN/ACK, ACK

C.
SYN, SYN, ACK/ACK

D.
ACK, SYN/ACK, SYN

Explanation:
The three-step handshake a TCP connection goes through is SYN, SYN/ACK, and ACK.
Incorrect Answers:
A: The initiate a TCP connection the handshake must start with a SYN, not with an ACK.
C: The initiate a TCP connection the handshake must start with a SYN, followed by a SYN/ACK. The second
step in the handshake is not SYN.
D: The initiate a TCP connection the handshake must start with a SYN, not with an ACK.