Classic question but I still fumbled the ordering a bit.
Start by defining TCP and its role in reliable data transmission, then walk through the three-way handshake step by step, explaining the purpose of each message. Finally, connect the handshake to real-world implications like connection establishment, reliability, and security considerations.
Pro tip: Mention how the handshake ensures both parties agree on initial sequence numbers and window sizes, which is crucial for flow control and reliability—this shows depth beyond just memorizing the steps.
Briefly explain that TCP is a connection-oriented protocol that provides reliable, ordered delivery of data over IP networks.
Walk through the SYN, SYN-ACK, and ACK messages, specifying the flags and sequence numbers involved.
Clarify that the handshake synchronizes sequence numbers, establishes parameters like window size, and confirms both parties are ready to communicate.
Mention how the handshake prevents half-open connections and ensures data integrity, and briefly note what happens if a step fails (e.g., retransmissions).
Relate the handshake to system design trade-offs, such as latency vs. reliability, and mention security implications like SYN flood attacks.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.