Listing target units | LinuC Level 1 101 Exam original practice question

1.01.3Basic

List target units currently loaded by systemd without changing state.

Which command is appropriate?

Hint 1: Focus on the requirement

Use a read-only listing and narrow it by the target unit type.

Hint 2: Key terms

Review the short definitions before comparing the boot and systemd choices.

list-units: The systemctl verb that lists units loaded in the current manager.
--type=target: A filter that limits a unit listing to target units.
Active unit: A loaded unit currently considered active by systemd.
Unit file: A disk file that declares how systemd manages a unit.

Detailed explanation

Correctsystemctl list-units --type=target

Correct. This lists target units known to the running system manager.

Incorrectsystemctl isolate --all

Incorrect. isolate changes the current target and does not accept --all for this query.

Incorrectsystemctl set-default --list

Incorrect. set-default --list is not the listing operation.

Incorrectsystemctl reboot --targets

Incorrect. reboot changes system state rather than listing units.

An example you can run in a temporary verification environment.

systemctl list-units --type=target --no-pager 2>/dev/null | head || true

読み込まれているtarget unitの一部

Environment: systemd採用Linux
Use read-only commands or a disposable Linux instance when checking boot metadata.
Exact unit names and command output can vary slightly by distribution.

Foundation review

list-units shows loaded runtime units; list-unit-files instead reports unit files and enablement on disk.

Capture the unit state and name before issuing any lifecycle command.

Question IDKL-101-351

Environmentsystemd採用Linux

Last technical review2026-08-13

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