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Transmission Control Protocol is a fundamental communication protocol used in computer networks to ensure reliable data transmission. It's one of the core protocols of the Internet. Here's a brief explanation of how TCP works:

Establishing a Connection:
Before data can be sent, a connection must be established between two devices, often referred to as the "client" and the "server."
This is done through a process called a "three-way handshake." The client sends a "SYN" (synchronize) message to the server, which responds with a "SYN-ACK" (synchronize-acknowledge) message, and finally, the client sends an "ACK" (acknowledge) message. This establishes a reliable connection between the two devices.

Data Transmission:
Once the connection is established, data can be sent in smaller units called "segments."
TCP breaks down the data into these segments and adds a header to each segment. The header contains control information, such as the sequence number, acknowledgment number, and various flags.
Data segments are then sent from the sender to the receiver.

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