Question: In an MBMS streaming session, how is the bandwidth required for RTCP (Real-time Transport Control Protocol) specified in the SDP (Session Description Protocol), on a per RTP (Real-time Transport Protocol) session basis?
Option 1: Using only the 'AS' bandwidth modifier with 'a=maxprate'
Option 2: Combining 'TIAS' with 'a=maxprate' and including an additional 'BW' parameter
Option 3: Utilizing both 'RR' (set to 0 for no receiver reports) and 'RS' bandwidth modifiers specifically for RTCP
Option 4: Specifying a fixed bandwidth value in the session level without using any bandwidth modifiers
Explanation: This is correct because the bandwidth required for RTCP (for each RTP session) is specifically outlined by the 'RR' and 'RS' bandwidth modifiers. The 'RR' modifier is set to 0 to indicate that RTCP receiver reports are not used, while the 'RS' modifier specifies the bandwidth used for RTCP sender reports, ensuring precise control over RTCP bandwidth allocation on a per-session basis.