20+ practice questions focused on System Management — one of the most tested topics on the CompTIA Linux+ XK0-005 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start System Management PracticeA system administrator needs to determine which process is using the most memory on a Linux server. Which command should be used to display processes sorted by memory usage?
Explanation: Option C is correct because `ps aux --sort=-%mem` lists all processes with detailed information and sorts them by memory usage in descending order, showing the most memory-intensive process first. The `-%mem` flag specifies sorting by the %MEM column (resident set size as a percentage of total physical memory) in reverse order, which directly answers the requirement to determine which process is using the most memory.
A Linux system is experiencing high CPU load. The administrator runs 'top' and sees that the 'kworker' processes are consuming significant CPU time. What is the most likely cause?
Explanation: The 'kworker' processes in the 'top' output indicate kernel workqueue threads that handle deferred work. High CPU usage by kworker is typically caused by a hardware interrupt storm, often from a failing disk controller or other faulty hardware generating excessive interrupts that the kernel must service. This forces the workqueue to constantly process interrupt-related tasks, consuming significant CPU time.
A company requires that all systems be configured to log all authentication attempts, both successful and failed. Which configuration file and directive should be used to ensure all auth messages are logged to /var/log/secure?
Explanation: In rsyslog, the `authpriv` facility covers authentication and authorization messages, including both successful and failed login attempts. The directive `authpriv.* /var/log/secure` directs all messages from this facility to `/var/log/secure`, which is the standard secure log file on RHEL/CentOS systems. This meets the requirement to log all authentication attempts.
An administrator needs to update the system time using an NTP server immediately without waiting for the next scheduled sync. Which command should be used?
Explanation: The `ntpdate` command is used to immediately synchronize the system clock with an NTP server, bypassing the daemon-based scheduled sync. Option D runs `ntpdate pool.ntp.org`, which performs a one-time query and sets the time instantly, making it the correct choice for an immediate update.
A Linux server runs a web application that frequently runs out of file descriptors. Which configuration change would permanently increase the maximum number of open files for all users?
Explanation: Option D is correct because editing /etc/security/limits.conf with both 'soft nofile' and 'hard nofile' entries permanently raises the per-user limit on open file descriptors for all users (or specified users/groups) at login. The soft limit is the current working limit, while the hard limit is the maximum ceiling; setting both ensures the user can reach the desired value without needing to run ulimit with root privileges.
+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 XK0-005 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+ XK0-005 blueprint. Practicing with targeted System Management questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free XK0-005 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 →