CompTIA Linux+ practice questions
Original questions written from the published exam objectives, never recalled exam content, with an explanation that teaches the concept behind every answer. Why that matters.
- Exam code
- XK0-005
- Cost
- $369 USD
- Questions
- Maximum of 90
- Duration
- 90 minutes
- Passing score
- 720 (scale 100-900)
- Format
- Multiple choice and performance-based
The XK0-005 exam costs $369. Fail it and the retake is another $369. Practicing until you are ready is the cheapest part of this.
Exam domains and official weightings
From the official CompTIA exam objectives. Put your study time where the weight is.
- System Management32%
- Security21%
- Scripting, Containers, and Automation19%
- Troubleshooting28%
- System Management32%
- Security21%
- Scripting, Containers, and Automation19%
- Troubleshooting28%
Try 5 free sample questions
No account needed. Every question includes our three-tier explanation: the concept, why the answer follows, and why each wrong option is wrong.
Sample question 1 of 5
Which command starts the nginx service immediately AND ensures it starts automatically at every boot?
Sample question 2 of 5
A script must be readable, writable, and executable by its owner; readable and executable by its group; and inaccessible to others. Which chmod value applies this?
Sample question 3 of 5
A web app fails with permission errors even though standard file permissions look correct, and audit logs show AVC denials. Which subsystem is blocking access, and what's the correct diagnostic direction?
Sample question 4 of 5
In a bash script, which line correctly checks whether the previous command failed?
Sample question 5 of 5
Applications report 'No space left on device' but df -h shows the filesystem only 60% full. What is the most likely cause?
Full Linux+ question bank coming
We’re writing the complete bank from the official objectives right now. Leave your email and we’ll tell you when it ships, nothing else, ever.
An honest study plan
1. Read the official objectives first
Download the official objectives from CompTIA and skim every line. The exam can only test what’s listed there, it’s the contract.
2. Weight your study toward System Management and Troubleshooting
Together the top two domains are 60% of the exam. Practice them until your accuracy is consistently above 80%.
3. Drill weak domains, then take a mock exam
Use Domain Drill on your weakest areas, then a full timed mock at real length (Maximum of 90 questions, 90 minutes). Book the real exam when you’re consistently passing mocks, not before.
Official free resources
Study from the source. These are CompTIA’s own materials:
Official Linux+ exam page & objectives ↗Where Linux+ fits
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Try free sample questionsFrequently asked questions
What does the Linux+ XK0-005 exam cover?
Four domains: system management (32%), security (21%), scripting/containers/automation (19%), and troubleshooting (28%). Expect heavy command-line content: systemd, permissions, LVM, networking tools, bash, git, and container basics.
Is Linux+ respected?
Linux+ is a solid vendor-neutral credential for sysadmin and DevOps-adjacent roles. It pairs well with Security+ or cloud certs, since Linux underpins most cloud workloads.
How should I practice for Linux+?
Run a Linux VM and type every command you study. Reading about tar flags doesn't stick; using them does. Our questions include realistic CLI output so you learn to read the terminal, not just recognize terms.
Ready to practice for XK0-005?
Play the free samples now. The full question bank is in progress, and you can join the waitlist on any sample question.