As a network technician, you should be familiar with RTCP. Which of the following statements best
describes a function of RTCP?

A.
RTCP provides encryption, message authentication and integrity, and anti-replay service for
voice streams.

B.
RTCP uses even-numbered UDP ports in the range 16,384??0?10?0?43??ì?0?1C32,767 to
transport voice payloads

C.
RTCP provides out-of-band control information for an RTP flow

D.
RTCP caches an RTP packet-Layer 3 and Layer 4 headers in the routers at each end of a link,
resulting in lower bandwidth demand for subsequent RTP packets.