RTSP (Real Time Streaming Protocol) uses which port number?

Prepare for the CPSA Port Numbers exam with multiple choice questions and detailed explanations. Understand key protocols and services to excel in your test.

Multiple Choice

RTSP (Real Time Streaming Protocol) uses which port number?

Explanation:
RTSP uses port 554 by default for its control channel. This is the standard port where clients send commands like PLAY, PAUSE, and TEARDOWN to manage streaming sessions with the server. While some setups can be configured to use a different port, 554 is the conventional default that identifies RTSP control traffic. The other ports correspond to different services—119 is NNTP, 123 is NTP, and 110 is POP3—so they don’t fit RTSP.

RTSP uses port 554 by default for its control channel. This is the standard port where clients send commands like PLAY, PAUSE, and TEARDOWN to manage streaming sessions with the server. While some setups can be configured to use a different port, 554 is the conventional default that identifies RTSP control traffic. The other ports correspond to different services—119 is NNTP, 123 is NTP, and 110 is POP3—so they don’t fit RTSP.

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