Checking firewalld state | LinuC Level 1 102 Exam original practice question

1.10.2Basic

Check whether firewalld is currently running.

Do not add, remove, or reload rules.

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

firewall-cmd --reload: Incorrect. --reload reapplies configuration.
firewall-cmd --add-service=http: Incorrect. --add-service changes firewall rules.
firewall-cmd --remove-service=http: Incorrect. --remove-service changes firewall rules.
firewall-cmd --state: Correct. --state only reports runtime status.

Detailed explanation

Incorrectfirewall-cmd --reload

Incorrect. --reload reapplies configuration.

Incorrectfirewall-cmd --add-service=http

Incorrect. --add-service changes firewall rules.

Incorrectfirewall-cmd --remove-service=http

Incorrect. --remove-service changes firewall rules.

Correctfirewall-cmd --state

Correct. --state only reports runtime status.

An example you can run in a temporary verification environment.

firewall-cmd --help 2>&1 | grep -E -- '--state|--reload' | head -n 2

--stateと--reloadの説明行

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKL-102-1144

Environmentfirewalld firewall-cmd help / ルール変更なし

Last technical review2026-08-20