UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) are fundamental protocols used for sending data over the Internet Protocol (IP) network. UDP is a connectionless protocol, meaning it doesn't establish a dedicated connection before sending data. This makes it faster but less reliable, as packets may be lost or arrive out of order. It's commonly used for streaming media, online gaming, and DNS lookups where speed is more critical than guaranteed delivery. TCP, on the other hand, is a connection-oriented protocol. It establishes a connection before sending data, ensuring reliable and ordered delivery through mechanisms like acknowledgments and retransmissions. TCP is used for applications that require guaranteed data integrity, such as web browsing (HTTP/HTTPS), email (SMTP), and file transfer (FTP).
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