CompTIA Linux+ Exam
Last Update Dec 14, 2025
Total Questions : 487
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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 Linux administrator is troubleshooting SSH connection issues from one of the workstations.
When users attempt to log in from the workstation to a server with the IP address 104.21.75.76, they receive the following message:
The administrator reviews the information below:
Which of the following is causing the connectivity issue?
At what point is the Internal Certificate Authority (ICA) created?
A Linux engineer set up two local DNS servers (10.10.10.10 and 10.10.10.20) and was testing email connectivity to the local mail server using the mail command on a local machine when the following error appeared:
The local machine DNS settings are:
Which of the following commands could the engineer use to query the DNS server to get mail server information?
TESTED 14 Dec 2025
