Why TCP needs 3 handshakes

TCP requires a three-way handshake to establish a reliable connection. This process involves three steps: the client sends a SYN packet to initiate a connection, the server responds with a SYN-ACK packet, and the client finally sends an ACK packet. This ensures both parties can send and receive data correctly, and avoids issues like delayed packet interference. Understanding of TCP control bits, sequence numbers, and state machines is crucial for comprehending this process, which can be visualized using tools like Wireshark.