A VoIP application requires that data payloads will NOT be fragmented. Which protocol controls network behavior in this situation?

RTSP operates at the application layer and establishes session parameters for streaming media and VoIP flows, including payload format and delivery expectations that help prevent fragmentation at the session level. It acts as a 'network remote control,' controlling how the media session is configured before and during transmission.

UDP is a connectionless transport protocol commonly used by VoIP, but it does not control session behavior or negotiate payload parameters to prevent fragmentation.

TCP provides reliable ordered delivery with segmentation and reassembly but is generally avoided for real-time VoIP due to latency introduced by retransmission, and it does not prevent application payload fragmentation.

IP handles packet addressing and routing at Layer 3 and can itself fragment packets based on MTU, but it does not provide session-level control over payload fragmentation behavior.