20+ practice questions focused on System Management — one of the most tested topics on the CompTIA Linux+ (XK0-006) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start System Management PracticeAn administrator wants to find all files in the current directory tree that are larger than 100 MB and have the .log extension. Which find command will accomplish this?
Explanation: Find . -name '*.log' -size +100M. This command searches recursively from the current directory (.) for files with names matching '*.log' (-name '*.log') and with size greater than 100 MB (-size +100M). Option B is incorrect because the size syntax +100MB is wrong; the correct suffix is M for megabytes. Option C uses -size -100M which finds files smaller than 100 MB. Option D uses -type f (files only) but does not filter by .log extension, so it would include all files larger than 100 MB regardless of extension.
An administrator needs to grant read and write access to the 'developers' group on a directory while preserving existing permissions for the owner and others. Which TWO commands can be used to modify ACLs? (Choose two.)
Explanation: setfacl is used to modify ACLs on files and directories. The -m option adds or modifies an ACL entry. Option C uses the user flag (u:) to set permissions for a user named 'developers', which can be valid if a user with that name exists and the intent is to grant access to that user. Option E correctly uses the group flag (g:) to grant read-write access to the 'developers' group. Both commands modify ACLs, while chmod changes standard permissions, getfacl only displays ACLs, and -x removes ACL entries.
A technician needs to replace the string 'oldhost' with 'newhost' in the file /etc/hostname. Which sed command will perform this change in-place?
Explanation: Uses 's/oldhost/newhost/g' with -i to perform a global in-place substitution, directly replacing 'oldhost' with 'newhost' as required. Option A uses 'd' to delete lines containing 'oldhost', which removes the old hostname but does not add the new one, thus failing to perform the replacement specified in the stem. Therefore, only option C correctly implements the string replacement.
A system administrator needs to view the last 15 lines of a log file that is constantly being updated. Which TWO commands can be used to achieve this? (Choose two.)
Explanation: tail -n 15 directly outputs the last 15 lines of the file. cat -n /var/log/syslog | tail -15 numbers all lines then shows the last 15, which also works. tail -f shows the last 10 lines by default and follows new content, so it does not specifically show the last 15 lines as required.
A Linux administrator needs to locate all files in the /var directory that have been modified within the last 30 minutes and are larger than 10MB. Which command accomplishes this task?
Explanation: The find command with -mmin and -size options can locate files based on modification time and size. -mmin -30 finds files modified less than 30 minutes ago, and -size +10M finds files larger than 10MB.
+15 more System Management questions available
Practice all System Management questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of System Management. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
System Management questions on the XK0-006 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. System Management is tested as part of the CompTIA Linux+ (XK0-006) blueprint. Practicing with targeted System Management questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free XK0-006 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but System Management is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
Launch a full System Management practice session with instant scoring and detailed explanations.
Start System Management Practice →