CompTIA Linux+ XK0-005 exam guide: format, domains, cost, and a free practice quiz covering system management, security, scripting/containers, and troubleshooting.
CompTIA Linux+ (XK0-005) validates the skills to configure, manage, secure, and troubleshoot Linux systems — the operating system behind most servers, cloud, and containers.
It's vendor-neutral and covers modern topics including scripting, automation, and containers, making it relevant for sysadmin, DevOps, and cloud roles.
▶ Start the free Linux+ (XK0-005) practice quiz| Certification | CompTIA Linux+ (XK0-005) |
|---|---|
| Exam code | Linux+ (XK0-005) |
| Level | Associate |
| Format | Multiple choice & performance-based questions |
| Questions | Up to 90 questions |
| Duration | 90 minutes |
| Passing score | 720 / 900 |
| Cost (USD) | ~$369 |
| Validity | 3 years (renewable via CE) |
| Prerequisites | None (A+/Network+ and 12 months Linux experience recommended) |
Exam details change over time — always confirm the current specifics on the official exam page before you book.
The official exam is organized into these domains. Our practice bank mirrors them so you can drill each area:
| Domain | Exam weight | Practice questions |
|---|---|---|
| System Management | ~30% | 8 |
| Security | ~20% | 4 |
| Scripting, Containers & Automation | ~19% | 4 |
| Troubleshooting | ~31% | 4 |
Practice the command line daily: files/permissions, processes, packages (apt/dnf), systemd services, storage, and networking.
Know security (SELinux, SSH, sudo), scripting (bash), automation (cron, Ansible), containers, and troubleshooting.
The free quiz below covers all four domains with explanations.
Our free Linux+ (XK0-005) practice quiz has 20 scenario-based questions covering every exam domain. Each question includes the correct answer, a plain-English explanation of why it is right (and why the alternatives are wrong), and a reference to the relevant topic — so you learn as you go, not just test yourself.
▶ Practice Linux+ (XK0-005) now — 20 questions, freeIt expects real command-line fluency. Regular hands-on practice on a Linux VM is the best preparation.
Linux+ is vendor-neutral and single-exam; RHCSA is Red Hat-specific and performance-based. All validate Linux administration.
Up to 90 in 90 minutes; 720/900 to pass.
Sysadmins and DevOps/cloud engineers who work on Linux systems.