Which port is used by RTSP (Real Time Streaming Protocol)?

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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

Which port is used by RTSP (Real Time Streaming Protocol)?

Explanation:
RTSP uses a standard port of 554 for its control signaling. The protocol is primarily about signaling and controlling streaming sessions, and while the control channel is commonly carried over TCP, RTSP can also operate over UDP in some setups. That’s why the best answer specifies 554 with either TCP or UDP—it reflects the standard port and the fact that either transport can be used. Other ports (like 80 or 21) are tied to HTTP and FTP and aren’t the RTSP default, and listing UDP alone would omit the common TCP usage.

RTSP uses a standard port of 554 for its control signaling. The protocol is primarily about signaling and controlling streaming sessions, and while the control channel is commonly carried over TCP, RTSP can also operate over UDP in some setups. That’s why the best answer specifies 554 with either TCP or UDP—it reflects the standard port and the fact that either transport can be used. Other ports (like 80 or 21) are tied to HTTP and FTP and aren’t the RTSP default, and listing UDP alone would omit the common TCP usage.

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