Quick Answer
The answer is `systemctl status network` because it directly queries the systemd unit managing the network service, displaying its current state, recent journal log entries, and any specific failure messages that caused the restart to error. On CentOS and other modern Linux distributions, systemd replaces older SysVinit scripts, so `systemctl status` is the authoritative command to inspect a unit’s health and retrieve detailed error output from the service’s control group. On the CompTIA Linux+ XK0-005 exam, this question tests your ability to troubleshoot service failures using systemd’s diagnostic tools, often as a follow-up to editing configuration files like `/etc/sysconfig/network-scripts/ifcfg-ens33`. A common trap is reaching for `journalctl -xe` or `dmesg` first, but `systemctl status` provides the most concise, service-specific error context immediately. Remember the mnemonic: “Status shows the story” — it gives you the unit’s state, logs, and failure reason in one command.
This XK0-005 practice question tests your understanding of troubleshooting. 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.
After editing the network configuration file /etc/sysconfig/network-scripts/ifcfg-ens33 on a CentOS system, the network service fails to restart with an error message. Which command should be used to display detailed error messages from the network service?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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.
ip link
Why wrong: Shows link layer state, not service errors.
systemctl status network
Shows service status and recent log entries.
journalctl -u network
Why wrong: While useful, 'journalctl' is better after checking service status.
ifconfig
Why wrong: Shows interface configuration, not service errors.
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 network
The `systemctl status network` command is the correct tool to display detailed error messages from the network service because it shows the current status, recent log entries, and any failure messages from the systemd unit managing the network service. On CentOS, network services are controlled by systemd, and `systemctl status` directly queries the unit's state and journal for errors, making it the most straightforward diagnostic command after a restart failure.
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.
ip link
Why it's wrong here
Shows link layer state, not service errors.
systemctl status network
Why this is correct
Shows service status and recent log entries.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
journalctl -u network
Why it's wrong here
While useful, 'journalctl' is better after checking service status.
ifconfig
Why it's wrong here
Shows interface configuration, not service errors.
Common exam traps
The trap here is that candidates often choose `journalctl -u network` (Option C) because they know it shows logs, but they overlook that `systemctl status network` is the more direct and concise command for viewing the immediate failure reason and service state, as specified in the XK0-005 objectives for troubleshooting systemd services.
Trap categories for this question
Command / output trap
Shows link layer state, not service errors.
Detailed technical explanation
Under the hood, `systemctl status network` queries the systemd unit `network.service` and reads its state from the systemd journal, showing the exit code, main PID, and the most recent log entries (typically the last 10 lines). This is particularly useful because systemd captures both stdout and stderr from the service's ExecStart commands, so any configuration syntax errors or missing dependencies (e.g., from `/etc/sysconfig/network-scripts/ifcfg-ens33`) are immediately visible in the status output. In a real-world scenario, if the network service fails due to a typo in the `DEVICE` or `BOOTPROTO` directive, `systemctl status network` will show the exact line from the ifcfg file that caused the failure, whereas `journalctl -u network` would require additional filtering to isolate the error.
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 XK0-005 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.
Troubleshooting — study guide chapter
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FAQ
Troubleshooting — This question tests Troubleshooting — Read the scenario before looking for a memorised answer..
The correct answer is: systemctl status network — The `systemctl status network` command is the correct tool to display detailed error messages from the network service because it shows the current status, recent log entries, and any failure messages from the systemd unit managing the network service. On CentOS, network services are controlled by systemd, and `systemctl status` directly queries the unit's state and journal for errors, making it the most straightforward diagnostic command after a restart failure.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This XK0-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-005 exam.
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