Describe a TCP connection sequence.

Interviewers ask about a TCP connection sequence to evaluate your technical expertise and understanding of networking concepts. This question assesses your ability to communicate complex technical processes clearly and can reveal your depth of knowledge in networking protocols. They are particularly looking for signs of your ability to explain technical information and apply it to real-world situations.

Start by outlining the fundamental steps in establishing a TCP connection, known as the TCP three-way handshake: SYN, SYN-ACK, and ACK. For instance, you might say, 'To establish a TCP connection, the process begins with a client sending a SYN (synchronize) packet to the server to initiate the connection. The server responds with a SYN-ACK (synchronize-acknowledge) packet, confirming the receipt of the SYN request. Finally, the client sends an ACK back to the server, completing the handshake and allowing for data transmission.' Make sure to highlight any relevant applications or implications of this process in your answer to demonstrate practical understanding.