Which statement about UDP is true?

Which statement about UDP is true?

• A. It guarantees delivery
• B. It uses a three-way handshake
• C. It sends data without establishing a connection first
• D. It provides a reliable stream

Answer: (C)

UDP is a connectionless, datagram-oriented protocol. Because there is no connection setup, you can send a datagram directly to a destination port without any prior handshake. This is why the statement that UDP sends data without establishing a connection first is true. In contrast, UDP does not guarantee delivery since there are no acknowledgments or retransmissions at the protocol level, so packets can be lost. It also does not use a three-way handshake—that is a feature of TCP used to establish a reliable connection. And it does not provide a reliable stream; UDP treats each datagram as an independent message, not as part of a continuous, reliable byte stream. This makes UDP fast and lightweight, suitable for applications that can tolerate some loss, such as real-time audio or video streams.

UDP is a connectionless, datagram-oriented protocol. Because there is no connection setup, you can send a datagram directly to a destination port without any prior handshake. This is why the statement that UDP sends data without establishing a connection first is true. In contrast, UDP does not guarantee delivery since there are no acknowledgments or retransmissions at the protocol level, so packets can be lost. It also does not use a three-way handshake—that is a feature of TCP used to establish a reliable connection. And it does not provide a reliable stream; UDP treats each datagram as an independent message, not as part of a continuous, reliable byte stream. This makes UDP fast and lightweight, suitable for applications that can tolerate some loss, such as real-time audio or video streams.