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102-500 Exam - Question 57


On a machine running several X servers, how do programs identify the different instances of the X11 server?

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Correct Answer: B

Programs identify different instances of the X11 server by a display name. Each running instance of an X server is given a display name in the form of hostname:displaynumber.screennumber. The display number uniquely differentiates each X server instance running on the same machine. This method ensures that each server instance can be individually addressed and managed.

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ledlongOption: B
Sep 26, 2021

The X server runs as the given display number, which by default is 0. If multiple X servers are to run simultaneously on a host, each must have a unique display number. From the user’s perspective, every X server has a display name of the form: hostname:displaynumber.screennumber