Which port is linked to the X11 system in the listed ports?

Which port is linked to the X11 system in the listed ports?

• A. 1194
• B. 5432
• C. 6000
• D. 6789

Answer: (C)

X11, the windowing system used on Unix-like systems, listens on a series of ports in the 6000 range: the base is 6000 for display :0, 6001 for display :1, and so on. That means among the listed ports, 6000 is the one associated with the X11 system for the first display. The other ports correspond to different services: 1194 is commonly used by OpenVPN, 5432 by PostgreSQL, and 6789 isn’t a standard X11 port. Keep in mind that in some setups X11 traffic can be tunneled through SSH or use Unix sockets, so the actual port can vary, but the conventional association is 6000 for the initial X display.

X11, the windowing system used on Unix-like systems, listens on a series of ports in the 6000 range: the base is 6000 for display :0, 6001 for display :1, and so on. That means among the listed ports, 6000 is the one associated with the X11 system for the first display. The other ports correspond to different services: 1194 is commonly used by OpenVPN, 5432 by PostgreSQL, and 6789 isn’t a standard X11 port. Keep in mind that in some setups X11 traffic can be tunneled through SSH or use Unix sockets, so the actual port can vary, but the conventional association is 6000 for the initial X display.