Question

UDP provides unreliable data transfer and therefore

A) should never be used
B) provides data security
C) provides congestion control
D) could be a good choice for loss-tolerant video and audio streams

Answer 1

Answer: The answer is d.

Step-by-step explanation:

UDP is a transport protocol (Layer 4 of the OSI model) that has no mechanism to provide a reliable transport between the source process and the destination one, as TCP does.

Anyway, due to this feature, is specially suitable for real-time applications , like video or audio, provided that the user can accept some loss in the stream.

Several real-time protocols, like RTP for instance (used for videoconferencing) use UDP as transport protocol.