Listing sudo permissions | LinuC Level 1 102 Exam original practice question

1.10.1Basic

List the commands the current user is allowed or denied to run through sudo.

Do not run an administrative command.

Which command is appropriate?

Hint 1: Focus on the requirement

Separate the scope and side effects of the concepts before comparing the choices.

Hint 2: Key terms

Review the short definitions of the command, configuration, and security concepts involved.

sudo: A mechanism for running an allowed command as another user.
sudoers: Configuration that defines subjects, targets, and commands allowed through sudo.
sudo -l: A selector that lists sudo operations allowed for the current user.
credential cache: A temporary sudo authentication state kept to avoid repeated entry.
sudo -k: A selector that discards the retained sudo authentication state.
su: A command for switching to another user's shell.

Detailed explanation

Incorrectsudo -v

Incorrect. -v validates credentials and updates the timestamp.

Incorrectsudo -k

Incorrect. -k invalidates the cached credential timestamp.

Correctsudo -l

Correct. -l lists applicable sudo permissions.

Incorrectsu -

Incorrect. su - starts another user's login shell.

An example you can run in a temporary verification environment.

sudo --help 2>&1 | grep -E -- '-l|--list' | head -n 1

-lまたは--listの説明行

Foundation review

A mode bit controlling read, write, execute, or special execution behavior.

Attributes that determine whether a password or login account can be used.

A per-process or per-user ceiling such as open files or process count.

Question IDKL-102-1129

Environmentsudo help / privilege command実行なし

Last technical review2026-08-13

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