Which command configures the system to boot directly into a graphical target by default?

• A. systemctl set-default graphical.target
• B. systemctl set-default multi-user.target
• C. systemctl set-default graphical.target
• D. systemctl isolate graphical.target

Answer: (C)

In systemd, the boot state is controlled by targets, and the default target determines what state the system starts in after boot. The graphical.target brings up the graphical user interface and all related services (like a display manager). Configuring the system to boot into this state by default means making graphical.target the default target, so future boots start with the GUI.

The command to do that is systemctl set-default graphical.target. It updates the /etc/systemd/system/default.target symlink to point to graphical.target, ensuring the GUI starts on every boot. Using systemctl isolate graphical.target would switch to the GUI immediately for the current session but wouldn’t change the default boot target. Booting with multi-user.target would be non-graphical, so that wouldn't meet the requirement.