Which port is used by VNC for the default display 0?

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Study for the CPSA Port Numbers Exam. Practice with flashcards and multiple choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

Which port is used by VNC for the default display 0?

Explanation:
VNC uses a port per display by a simple rule: the port number is 5900 plus the display number. The default display is 0, so the VNC service for that display listens on 5900 over TCP. If you ever run another VNC server for a different display, say display 1, it would use 5901, and so on. This mapping is specific to the VNC/RFB setup, which is why 5900 is the correct choice for display 0. The port 6000 is associated with the X11 server for display 0, not VNC, and 5901 or 5899 would correspond to other, non-default displays.

VNC uses a port per display by a simple rule: the port number is 5900 plus the display number. The default display is 0, so the VNC service for that display listens on 5900 over TCP. If you ever run another VNC server for a different display, say display 1, it would use 5901, and so on. This mapping is specific to the VNC/RFB setup, which is why 5900 is the correct choice for display 0. The port 6000 is associated with the X11 server for display 0, not VNC, and 5901 or 5899 would correspond to other, non-default displays.

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