6.1.4 - User Datagram Protocol (UDP)

Flashcards explaining key concepts related to the User Datagram Protocol (UDP) based on lecture notes.

Source port

UDP port of the sending host.

Destination port

UDP port of the destination host.

Message length

Size of the UDP packet.

Checksum

Ensures the validity of the packet.

User Datagram Protocol (UDP)

A connectionless, nonguaranteed method of communication at the Transport layer without acknowledgments or flow control.

Reliability mechanisms in UDP

Must be implemented in the Application layer or software logic, as UDP does not guarantee message delivery.

Applications suitable for UDP

Applications that send small amounts of data without requiring acknowledgment, suitable for multicast or broadcast traffic.

UDP packet structure

Contains a header size of 8 bytes, compared to 20 bytes or more for TCP.

Key advantage of UDP

Reduced overhead and faster overall delivery for time-sensitive data applications.

Common applications of UDP

Voice or video data transfers where minor packet loss does not significantly affect quality.