Exam XK0-005 topic 1 question 77 discussion

Actual exam question from CompTIA's XK0-005

Question #: 77
Topic #: 1

A developer is trying to install an application remotely that requires a graphical interface for installation. The developer requested assistance to set up the necessary environment variables along with X11 forwarding in SSH. Which of the following environment variables must be set in remote shell in order to launch the graphical interface?

A. $RHOST
B. SETENV
C. $SHELL
D. $DISPLAY

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Suggested Answer: D 🗳️

by TheRealManish at Nov. 24, 2022, 3:13 p.m.

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linux_admin

1 year, 8 months ago

D. $DISPLAY The DISPLAY environment variable tells the X Window System which display to use for any graphical applications that are launched. When using X11 forwarding over SSH, the DISPLAY variable must be set in the remote shell to the value of the display on the local system. This allows graphical applications running on the remote system to display their windows on the local system.

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TheRealManish

1 year, 11 months ago

Selected Answer: D

I pick D. the only hesitation I have is that installing X11 should set that automatically.

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e418137

9 months ago

It's a weird question these days. Imagine you have the workstation running X11. You use SSH to connect to a server, and you find software that you want to run. It's graphical software that won't run because it cannot find a display. On the remote server, you would 'export DISPLAY=hostname_or_ip_address:display_number' to cause the software to send its drawing commands to your local display.

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Exam XK0-005 topic 1 question 77 discussion

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