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??´?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.
