What the CompTIA Linux+ XK0-006 is and who it is for
CompTIA Linux+ is a vendor neutral Linux administration certification. XK0-006 is the current version, V8, which launched on 15 July 2025 and replaced XK0-005 in January 2026. It is the most significant update to the exam in years: alongside traditional administration, it adds cloud integration, automation, orchestration, scripting and AI adjacent content, to reflect how Linux is actually run in modern IT environments.
It suits system administrators, cloud engineers and DevOps professionals who work with Linux on premises and in the cloud. It is for you if Linux is a daily part of your job and you want a credential that proves it, or if you are moving from Windows or network administration into roles where Linux servers are the norm.
If you studied for an older Linux+ version, treat XK0-006 as a new exam. The emphasis on automation and security is heavier, and the domain structure is different.
CompTIA Linux+ XK0-006 at a glance
| Item | Detail |
|---|---|
| Exam code | XK0-006 |
| Questions | Up to 90, including performance based questions |
| Time allowed | 90 minutes |
| Passing score | 720 on a scale of 900 |
| Exam fee | US$399 per voucher |
| Where you sit it | Pearson VUE testing centres and online |
What is on the exam
Five domains, with system management and troubleshooting the two largest. Together they are 45% of the exam, and troubleshooting draws on everything in the other four.
System management (23%). The core of running a Linux system: the boot process, the filesystem hierarchy, storage, partitions, logical volumes and mounting, package management, kernel modules, network configuration and the basics of running Linux in virtual and cloud environments. Expect questions that give you a requirement and ask which command or configuration meets it.
Services and user management (20%). Running services and the accounts that use them. That covers managing services and their units, scheduling jobs, working with processes and logs, and creating and maintaining local users and groups. Many questions here are practical: a service will not start at boot, or a user needs access to a shared directory.
Security (18%). Hardening a Linux system and controlling access to it: authentication and remote access with keys, file permissions and access control lists, firewalls, mandatory access control frameworks, encryption and the configuration choices that reduce a server’s exposure. The exam tests what you would change on a real system, not security theory.
Automation, orchestration and scripting (17%). Shell scripting, reading and fixing scripts, version control, configuration management and infrastructure as code, and orchestration concepts, together with the AI adjacent content this version introduced. You need to read a short script and say what it does or where it goes wrong.
Troubleshooting (22%). Diagnosing and fixing problems across the whole system: boot failures, storage and filesystem errors, network connectivity, performance, permissions and services that misbehave. The skill tested is working from symptoms and command output to the cause, then choosing the correct fix.
Why people fail it
The XK0-006 is a clear step up from older Linux+ versions, and candidates who prepare from outdated material are caught out by how much of it now covers cloud integration, automation, scripting and security. An experienced administrator who has never written a configuration management playbook or read someone else’s script under time pressure will find whole sections unfamiliar.
The performance based questions are the bigger trap. You are asked to complete real tasks in a simulated terminal, and you cannot guess your way through them. Recognising the right command in a short list is much easier than typing it with the correct options from memory. Candidates who have only studied from reading, without hands on practice, lose marks here that they cannot recover elsewhere.
Time adds pressure. Up to 90 questions in 90 minutes is tight once a PBQ absorbs several minutes, and anyone who has not rehearsed the format under a clock ends up rushing the final block. Weighting is the last mistake: system management and troubleshooting carry the most marks, and troubleshooting rewards broad, practical familiarity, which you only build by spending real time at a terminal.
A study plan that fits the exam
Seven weeks: two for system management, one each for the other four domains, and a final week of timed practice. Keep a Linux virtual machine open for every session and do everything you read about.
- Week 1: system management, part one. Boot process, filesystem hierarchy, storage, partitions, logical volumes and mounting. At the end of the week, try the free Linux+ practice questions to see how CompTIA frames its tasks.
- Week 2: system management, part two. Package management, kernel modules, network configuration and virtual or cloud hosted Linux. Break your own network configuration and fix it again.
- Week 3: services and user management. Services and units, scheduling, processes, logs, users and groups. Set up a service to start at boot and a shared directory for a group.
- Week 4: security. Key based remote access, permissions and access control lists, firewall rules, mandatory access control and hardening. Work the security questions in the XK0-006 practice question pack and read every explanation, including the wrong options.
- Week 5: automation, orchestration and scripting. Write short shell scripts, use version control, and read through configuration management examples until you can predict what they do.
- Week 6: troubleshooting. Work through faults across boot, storage, network, performance and services. For each one, practise the order you would check things in.
- Week 7: timed runs. Use the questions only PDF for full sittings against the 90 minute limit, score by domain, and spend the remaining days on the weakest one.
On exam day
You sit XK0-006 at a Pearson VUE testing centre or online. For online delivery, check the room and webcam requirements in advance and run the system test on the computer you will use. For a centre, bring the identification your booking confirmation lists and arrive early.
You have 90 minutes for up to 90 questions, including performance based tasks in a simulated terminal. Decide on a pace before you start. If a PBQ is taking too long, flag it if the interface allows, answer the multiple choice questions and return with the time you have banked. The passing score is 720 on a scale of 900. It is a scaled score, not a percentage, so do not try to count marks during the exam. Answer every question.
Frequently asked questions
Can I still sit XK0-005?
No. XK0-006 replaced XK0-005 in January 2026, so XK0-006 is the exam to prepare for. Material written for XK0-005 misses much of the automation, orchestration and cloud content in the current version.
What happens if I fail? Can I retake it?
You can, but each attempt needs a new voucher at the full fee, currently US$399. CompTIA publishes its retake policy, including any waiting period, on its website, so check it before you rebook. The practice pack is refunded if you fail, but the voucher is not, so do your timed practice before your first attempt.
Is the practice question pack enough on its own?
No. It is 155 practice questions, MCQs and PBQs, mapped to the XK0-006 objectives, with an explanation for every answer and every wrong option. It shows you how CompTIA asks its questions and where your gaps are. It is not a course, and it cannot replace hours of hands on work at a real terminal, which is what the PBQs reward. Use it alongside a study guide and a lab, not instead of them.
When you are ready to practise, get the 155 question XK0-006 pack for US$39, pass or your money back.