CompTIA Network+ N10-006 Q152

Which of the following PDUs is used by a connectionless protocol?

A. Frames
B. Segments
C. Streams
D. Datagram

Correct Answer: D
Section: Industry standards, practices, and network theory

Explanation:
UDP is a connectionless transport protocol that operates in the transport layer of the OSI model. UDP stands for User Datagram Protocol. PDUs (Protocol Data Units) used by UDP are known as Datagrams.