What is the significance of the TCP three-way handshake for applications that utilize TCP as transport protocol?
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The TCP three-way handshake is significant for applications that utilize TCP as a transport protocol for several reasons:
1. Connection Establishment: The three-way handshake is used to establish a connection between the client and the server. This ensures that both the sender and receiver are ready for data transmission.
2. Synchronization of Sequence Numbers: It allows both the client and the server to synchronize their initial sequence numbers (ISNs) with each other. This is important for the correct ordering of data packets.
3. Parameter Agreement: It allows both sides to agree on parameters such as maximum segment size, window size, etc. This helps in efficient data transmission and flow control.
4. Reliability: The handshake process ensures that data is sent and received reliably. If any of the steps in the handshake fail, the connection is not established, preventing potential data loss or corruption.
5. Congestion Control: It helps in managing network congestion as the receiver can control the amount of data it can accept.
6. Security: It can help in preventing certain types of attacks (like SYN flood attacks) by ensuring that only legitimate connections are established.