If you’re preparing for CompTIA Linux+ from a study guide that names XK0-005, check the code on it before you book anything. CompTIA’s US Linux+ page currently lists one exam code: XK0-006, live since July 15, 2025.
That matters more than a version number usually does. XK0-006 publishes five domains, and older material doesn’t map cleanly onto them.
Five Domains, Not Four
The current weighting:
| Domain | Weight |
|---|---|
| System Management | 23% |
| Troubleshooting | 22% |
| Services and User Management | 20% |
| Security | 18% |
| Automation, Orchestration, and Scripting | 17% |
The first thing to notice is how flat that is. There’s six points between the heaviest domain and the lightest. No single area carries the exam, which means there’s nowhere safe to be weak: a domain you skip costs you roughly a fifth of the paper regardless of which one you pick.
The second thing is Troubleshooting at 22%. It sits second, not last, and it’s the domain that resists memorization hardest. You can learn systemctl flags from a table. Diagnosing why a service won’t start on a system you’ve never seen is a different skill, and it’s the one performance-based questions are built to test.
The Format
A maximum of 90 questions in 90 minutes, multiple-choice and performance-based, with a passing score of 720 on a 100–900 scale.
A minute a question sounds comfortable until performance-based questions appear. Those often take longer than a standard multiple-choice item, which means the rest have to go faster to buy the time back. Knowing that in advance is worth a few points on its own.
What CompTIA Expects You to Bring
The recommendation is 12 months of hands-on experience with Linux servers, plus A+, Network+, or Server+ level knowledge or the equivalent.
Take “hands-on with servers” at face value. A desktop distribution you’ve used for a year doesn’t exercise the same ground, and System Management, Services and User Management, and Security are 61% of the exam combined.
If you don’t have that year yet, the fastest route is a virtual machine you’re allowed to break, a service you have to get running, and a log you have to read to find out why it won’t start.
How to Prepare
Study by weight, not by chapter order. A linear chapter-by-chapter read-through tends to leave scripting and automation until last. The exam gives that domain 17% and System Management 23%, so a read-through spends your final and least energetic hours on your smallest return.
Then find out where you stand. Our Linux+ practice questions track your weak areas, and the readiness breakdown usually points somewhere you didn’t expect.
CompTIA lists retirement as usually three years after launch, estimated 2028 for XK0-006, so a certification earned now has a full run ahead of it.
