CompTIA Linux+ (XK0-004) — Question 16

A Linux administrator needs to switch from text mode to GUI. Which of the following runlevels will start the GUI by default?

Answer options

• A. Runlevel 3
• B. Runlevel 4
• C. Runlevel 5
• D. Runlevel 6

Correct answer: C

Explanation

Runlevel 5 is the default runlevel for starting the GUI in most Linux distributions. Runlevel 3 is for multi-user mode without a GUI, while runlevel 4 is often reserved for user-defined purposes and does not guarantee a GUI. Runlevel 6 is used for rebooting the system.