RTSP common communications port?

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Prepare for the CPSA Port Numbers Exam with quizzes on port numbers, services, and protocols. Each question is accompanied by hints and detailed explanations. Get exam-ready with our comprehensive study tool!

Multiple Choice

RTSP common communications port?

Explanation:
RTSP uses a standard control port of 554. This port is designated for RTSP control messages, and it can be reached over either TCP or UDP depending on how the session is negotiated and transported. In practice, RTSP control often runs over TCP for reliable delivery, while the actual media data is typically sent over RTP on separate ports, usually using UDP. The other port options belong to different protocols (port 80 for HTTP, port 21 for FTP), so they don’t apply to RTSP. Therefore, the best choice reflects the correct default port with the flexibility of transport: 554 TCP/UDP.

RTSP uses a standard control port of 554. This port is designated for RTSP control messages, and it can be reached over either TCP or UDP depending on how the session is negotiated and transported. In practice, RTSP control often runs over TCP for reliable delivery, while the actual media data is typically sent over RTP on separate ports, usually using UDP. The other port options belong to different protocols (port 80 for HTTP, port 21 for FTP), so they don’t apply to RTSP. Therefore, the best choice reflects the correct default port with the flexibility of transport: 554 TCP/UDP.

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