Listing stopped containers too | LinuC Level 1 101 Exam original practice question

1.01.2Basic

List both running and stopped containers.

Which command is appropriate?

Hint 1: Focus on the requirement

Separate the default running-only view from the option that includes stopped container objects.

Hint 2: Key terms

Review the short definitions before comparing the virtualization or lifecycle choices.

docker ps: A Docker command for listing container objects, running ones by default.
--all: The listing option that includes containers in non-running states.
Container state: The lifecycle status of a container, such as running or exited.

Detailed explanation

Incorrectdocker ps

Incorrect. Plain docker ps normally lists only running containers.

Incorrectdocker images -a

Incorrect. docker images -a lists images, not containers.

Incorrectdocker exec --all

Incorrect. docker exec does not list containers.

Correctdocker ps -a

Correct. docker ps -a includes stopped containers.

An example you can run in a temporary verification environment.

docker ps --help 2>/dev/null | grep -E -- '--all|-a' || true

Dockerがある場合は--allのhelp。daemonへ一覧要求しない

Foundation review

An image listing and a container listing expose different object types; the state filter changes which containers appear.

Use the ID and state columns to confirm which stopped object is safe to restart or remove.

Question IDKL-101-326

EnvironmentDocker CLI helpのみ

Last technical review2026-08-13

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