LFCS Certification LFCS Boot Process and System Initialization 2

Question 1

What is the systemd target equivalent to traditional runlevel 3 (multi-user, no GUI)?

Accepted Answer

multi-user.target

Answer

multi-user.target is the systemd equivalent of runlevel 3: full network, multi-user, but no graphical environment.

Question 2

Which command sets the default systemd target that the system boots into?

Accepted Answer

systemctl set-default

Answer

systemctl set-default <target> creates a symlink from /etc/systemd/system/default.target to the specified target.

Question 3

What command displays the current default systemd boot target?

Accepted Answer

systemctl get-default

Answer

systemctl get-default reads the symlink at /etc/systemd/system/default.target and prints its target name.

Question 4

Which systemd target is equivalent to runlevel 5 and starts the graphical desktop?

Accepted Answer

graphical.target

Answer

graphical.target is the systemd equivalent of runlevel 5, pulling in a display manager and desktop environment.

Question 5

How do you immediately switch to rescue.target on a running system without rebooting?

Accepted Answer

systemctl isolate rescue.target

Answer

systemctl isolate <target> switches to the given target immediately, stopping all units not required by it.

LFCS Certification Practice Test