The difference between TCP protocol and UDP protocol

TCP and UDP are two network transport layer protocols. The main differences are: connection mode: TCP is connection-oriented and needs to establish a connection; UDP is connectionless and sends data directly. Reliability: TCP is reliable and ensures that the data is transmitted in complete order; UDP is unreliable and does not guarantee that the data is transmitted in order. Transmission method: TCP uses streaming transmission, and UDP uses message transmission. Congestion control: TCP has a congestion control mechanism, but UDP does not. Other differences: TCP provides flow control, but UDP does not; TCP is used for applications that require reliable transmission, and UDP is used for applications that require fast transmission.

The difference between TCP protocol and UDP protocol

TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) ) are two different network transport layer protocols with different characteristics and uses.

Main difference:

Connectivity:

##TCP is connection-oriented and must be used before data transmission Establish a connection first.
• UDP is connectionless and data can be sent directly without establishing a connection.

Reliability:

TCP is a reliable protocol that guarantees data delivery in the correct order and integrity.
• UDP is an unreliable protocol that does not guarantee that data will arrive at its destination in order or complete.

Transmission method:

TCP uses streaming transmission, and data is sent in the form of a continuous data stream.
• UDP uses message transmission, data is encapsulated into independent messages, and each message is transmitted independently.

Congestion control:

TCP has a congestion control mechanism that can adjust the sending rate according to network conditions to avoid network congestion.
• UDP has no congestion control mechanism, it sends data as fast as possible.

Other differences:

TCP provides flow control to ensure that the receiver has enough space to receive data.
• UDP does not provide flow control.
• TCP is commonly used in applications that require reliable transport and sequential delivery, such as email and file transfer.
• UDP is commonly used for applications that require fast transfers and low latency, such as video streaming and online gaming.

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