Which port is commonly used for X11 network services?

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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

Which port is commonly used for X11 network services?

Explanation:
X11 uses a port number that is derived from the display number. The convention is 6000 plus the display. With the default display :0, the X11 server listens on 6000, making that port the standard for X11 network services. If the display were :1, it would be 6001, and so on. The other ports listed correspond to different services (for example, 1194 is commonly used by OpenVPN, 5432 by PostgreSQL), so they aren’t associated with X11.

X11 uses a port number that is derived from the display number. The convention is 6000 plus the display. With the default display :0, the X11 server listens on 6000, making that port the standard for X11 network services. If the display were :1, it would be 6001, and so on. The other ports listed correspond to different services (for example, 1194 is commonly used by OpenVPN, 5432 by PostgreSQL), so they aren’t associated with X11.

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