What is on the XK0-006 exam?

Up to 90 questions in 90 minutes, 720 to pass on the 100 to 900 scale. Domains: System Management (23%), Services and User Management (20%), Security (18%), Automation, Orchestration, and Scripting (17%), Troubleshooting (22%).

Which domain is worth the most?

System management at 23% and Troubleshooting at 22%. Start there, and keep coming back: the heaviest domains decide most pass and fail results.

How long should I plan for?

Set aside five to eight weeks at about five focused hours a week, then let a full practice sitting decide your exam date. If you already work in IT, the first weeks move faster. Do not book until a fresh sitting, with questions you have not seen, lands above the pass mark.

What score do I need to pass?

You need 720 on the 100 to 900 scale. Keep a margin above that in practice, because exam-day stress costs a few points.

Get comfortable on the command line first: navigation, pipes, permissions, and process control.

Do I need hands-on experience?

Helpful, not required. The browser labs let you practise the hands-on tasks without a server or a rack, and each lab grades the end state rather than the exact command you typed.

Are the practice questions the same as the real test?

No. SecLern questions are written originally for this site and mapped to the published objectives. They are never copied from a real exam.

What should I do the week before the exam?

Take one full simulation early in the week and review every miss. Spend the middle of the week on the two domains that scored lowest, then stop adding new material 48 hours out. Confirm your appointment and ID, sleep, and read the goal line twice on every performance task.

Is this page current?

This page is built against CompTIA Linux+ V8 (XK0-006) exam objectives (V8), verified 2026-10-19. Exam owners change objectives and retirement dates, so confirm the date for your language before you book.

CertificationsLinux+

CompTIA · XK0-006

CompTIA Linux+ XK0-006

CompTIA Linux+ (XK0-006, V8) validates the Linux work sysadmins do daily: boot and storage, users and permissions, firewalls and hardening, containers, scripting, and troubleshooting across cloud and hybrid environments.

A sysadmin or cloud engineering role, or a security role that keeps landing on Linux hosts. CompTIA recommends about a year of hands-on Linux server experience plus A+, Network+, or Server+ level knowledge.

Study XK0-006 free

See labs Check version dates

Version status

CompTIA has not published a date. Three years after launch is an estimate.

Retires: Estimated 2028

Where the marks live

Domain weights from the current XK0-006 objectives. Start with the heaviest slice, not the first chapter.

System management leads at 23%

23%System management

How much study time does XK0-006 need?

Pick the closest starting point. The range below is a planning estimate, not a promise or a pass prediction.

70 to 110 hoursat a steady pace

That is up to 22 weeks at 5 hours a week, or 14 weeks at 8 hours. Some IT background, but the exam material is still new.

Estimate only. Based on the exam level and a study-pace assumption. Your background, exam date and practice scores will move it.

A study plan that works

Order matters

Get comfortable on the command line first: navigation, pipes, permissions, and process control.
Learn systemd and storage hands-on (units, mounts, LVM). They carry the heaviest domain.
Practice security tasks as procedures: sudo policy, firewalls, SSH hardening, and SELinux denials.
Write small Bash and Python scripts, then break them and debug. Automation is 17% and shows up in troubleshooting too.

Try one question

Live demo

Demo questionSecurity

A file has the mode 640 and is owned by alice:finance. Which statement is true?

Written for this page. It is a teaching demo, not an item from the question bank or the real exam.

Try the hands-on shape

About 2 minutes

Try it: a terminal that answers back

Teaching terminal. Type help, then try ping web or nmap web.

A teaching model of ping and nmap, not a real network.

Demo preview. A teaching model with fixed sample data, not the real lab. Full labs run in the browser with checkable steps.

Practice a performance question

8 performance-based questions are written for CompTIA Linux+ XK0-006. They ask you to do the task in a simulated console, table or form, and they grade in parts, so a half-right answer still earns credit.

How performance questions are scored

Sample performance questionMatch each task to the control or service

A Linux script refuses to run: Permission denied

A workstation has 169.254.x.x and no internet

A switch port shows no link light

A teaching demo written for this page. It is not a real exam item, and nothing here is saved.

This matching sample is local and ungraded. The full set is included in practice for this exam.

Common traps

Ways smart people lose points on this exam.

Reading about commands instead of running them. Performance-based items reward muscle memory.
Treating SELinux or firewall denials as random. Learn to read the denial and the zone.
Skipping containers and Git because they feel like a different job. V8 puts both on the exam.

Practise XK0-006, three ways

Every lab is a job task in the tool that job uses, graded on the end state you leave behind. The PBQ pages explain the performance formats this exam uses and open one real scenario in the browser. The practice test gives you fifteen questions with a reason for every option.

Open the XK0-006 labs

Objectives by domain

Every published XK0-006 objective, grouped by the domain that carries it. The wording stays with CompTIA.

29 objectives

System management23% of the examStart here

1.1Boot and kernel
1.2Modules and devices
1.3Storage and filesystems
1.4Network configuration
1.5Shell operations
1.6Backup and restore
1.7Virtualisation

Services and users20% of the exam

2.1Permissions
2.2Users and groups
2.3Processes and jobs
2.4Packages
2.5Services and logs
2.6Containers

Security18% of the exam

3.1Authentication
3.2Firewalls
3.3Hardening
3.4Account security
3.5Cryptography
3.6Compliance

Automation17% of the exam

4.1Automation and IaC
4.2Shell scripting
4.3Python
4.4Git
4.5AI best practices

Troubleshooting22% of the exam

5.1Monitoring
5.2Hardware faults
5.3Network faults
5.4Security faults
5.5Performance

The full entry for each objective (the explainer, key terms, traps and practice questions) lives in the Study Book. One objective per certification is free to read; Pro opens the rest.

Questions about this exam

90 questions in 90 minutes. 720 to pass on the 100 to 900 scale. Domains: System management (23%), Services and users (20%), Security (18%), Automation (17%), Troubleshooting (22%).

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