This LFCS practice question tests your understanding of operation of running systems. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A junior admin runs 'systemctl restart httpd' but the httpd service fails to start. Which command should the admin use first to diagnose the problem?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
journalctl -u httpd
Why wrong: Good for logs but not the first step; status is quicker.
systemctl show httpd
Why wrong: Shows service properties, not error information.
systemctl list-units --type=service
Why wrong: Only lists units, not error details.
systemctl status httpd
Provides service status, recent logs, and error info directly.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
systemctl status httpd
Option D is correct because `systemctl status httpd` provides a concise summary of the service's current state, including whether it is active, the last log entries, and the exit code or failure reason. This is the first diagnostic step recommended by systemd documentation to quickly identify common issues like configuration errors, missing dependencies, or permission problems.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
journalctl -u httpd
Why it's wrong here
Good for logs but not the first step; status is quicker.
systemctl show httpd
Why it's wrong here
Shows service properties, not error information.
systemctl list-units --type=service
Why it's wrong here
Only lists units, not error details.
systemctl status httpd
Why this is correct
Provides service status, recent logs, and error info directly.
Clue confirmation
The clue words "first", "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often jump to `journalctl -u httpd` thinking they need the full log, but the LFCS exam expects `systemctl status` as the first diagnostic command because it provides a quick, human-readable summary of the failure reason.
Trap categories for this question
Command / output trap
Shows service properties, not error information.
Detailed technical explanation
Under the hood, `systemctl status` reads the unit's state from the systemd manager's internal data structures and displays the last few log entries from the journal, which are stored in binary format under `/var/log/journal/` or `/run/log/journal/`. In real-world scenarios, a service may fail due to a syntax error in its configuration file (e.g., Apache's httpd.conf), and `systemctl status` will often show the exact line causing the failure, saving time over grepping logs.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the LFCS exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Operation of Running Systems — This question tests Operation of Running Systems — Read the scenario before looking for a memorised answer..
The correct answer is: systemctl status httpd — Option D is correct because `systemctl status httpd` provides a concise summary of the service's current state, including whether it is active, the last log entries, and the exit code or failure reason. This is the first diagnostic step recommended by systemd documentation to quickly identify common issues like configuration errors, missing dependencies, or permission problems.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "first", "which command". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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