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A plain guide to CompTIA Linux+, the vendor-neutral Linux administration certification, as of October 2026. It covers the current XK0-006 exam and the XK0-005 retirement, the five domains and their weights, the exam format and passing score, where Linux+ stands on DoD 8140, the jobs it fits, and how it compares to RHCSA and Server+.
CompTIA Linux+ is a vendor-neutral certification that validates your ability to configure, manage, secure, automate and troubleshoot Linux servers, on premises and in cloud and hybrid environments.
The current version is Linux+ V8, exam XK0-006, which CompTIA launched on July 15, 2025. It tests skills that carry across any major distribution rather than one vendor’s build, so the objectives list NetworkManager and Netplan, firewalld and ufw, and Docker and Podman side by side. That breadth is deliberate. You might patch Ubuntu servers on Monday and chase an SELinux denial on a Red Hat family box on Tuesday, and the exam expects you to handle both.
Linux+ is ANAB-accredited under ISO 17024. It has no formal prerequisites, though CompTIA recommends 12 months of hands-on experience with Linux servers and A+, Network+ or Server+ knowledge. It is not on the DoD 8140 approved list today, and CompTIA says it’s under review. The certification is issued and maintained by CompTIA, which also publishes the official XK0-006 exam objectives.
Boot, storage, LVM, networking and virtualization. The heaviest domain at 23%.
Accounts, processes, packages, systemd and containers.
Authentication, firewalls, SELinux, hardening and encryption.
Ansible, Bash, Python and Git. New in V8 and the lightest domain at 17%.
Boot, storage, network, security and performance faults. 22% of the exam.
Four things that set the V8 exam apart from a single-vendor Linux credential in 2026, including one limit worth knowing before you book.
CompTIA describes Linux+ as covering skills you can apply with any major Linux distribution, which is the main line between it and Red Hat’s RHCSA. If your servers are a mix of Ubuntu, Debian and RHEL-family builds, Linux+ matches the job you actually have. It is ANAB-accredited under ISO 17024.
XK0-005 had four domains, with scripting folded into containers and automation. V8 gives Automation, Orchestration, and Scripting its own 17% domain, covering Ansible, Puppet, OpenTofu, Kubernetes, Python and Git.
Kernel panics, GRUB mistakes, inode exhaustion, MTU mismatches and SELinux denials all appear in the fault-finding objectives, and most are written as scenarios. The domain breakdown below shows what each one is worth.
Linux+ is not an approved qualification under DoD Manual 8140.03 today. CompTIA says the certification is under review for approval, and CompTIA’s own 8140 alignment page lists seven approved CompTIA certifications without it.
So if a federal or contractor position requires an 8140 qualification now, Linux+ alone won’t meet it. Network+ and Security+ are both on CompTIA’s approved list. The current qualification matrices are published at the DoD Cyber Exchange.
The certification, the XK0-006 exam, and what it takes to keep Linux+ active, as of October 2026.
CompTIA points Linux+ holders toward CySA+, Cloud+ and PenTest+. The three directions below cover those picks plus Red Hat’s own track, and each one leans on the shell fluency Linux+ proves, even where it isn’t a formal requirement.
The vendor track for admins who run Red Hat. EX200 is a hands-on exam on RHEL 10 with no internet access, and every configuration has to survive a reboot. Linux+ already covers much of the same ground (LVM, systemd, firewalld, SELinux), so the jump is mostly about speed on a live system. RHCSA is also the required step before RHCE.
Both appear on CompTIA’s own list of next steps after Linux+. Analysts and testers spend much of the day in a shell reading logs, checking permissions and running tools, and both exams assume you can do that without a cheat sheet. See the CySA+ guide and the PenTest+ guide.
Cloud+ is CompTIA’s suggested cloud follow-on. For containers, the Certified Kubernetes Administrator is a two-hour, performance-based exam on live clusters, and its troubleshooting tasks lean on the same Linux command line that Linux+ tests.
CompTIA recommends A+, Network+ or Server+ knowledge before Linux+. From there the path branches toward Red Hat, security, or cloud and container work.
The IT groundwork
The vendor-neutral Linux base
Two questions to answer before you commit: can you sit it, and should you pursue Linux+ specifically. Here’s a straight answer to both.
No prerequisites, no application.
Linux+ has no formal prerequisites. CompTIA says the exam is open to anyone and you don’t need a prior certification to book it. Buy a voucher, schedule with Pearson VUE, and sit it at a test center or online.
Experience changes the timeline.
CompTIA recommends 12 months of hands-on Linux server experience plus A+, Network+ or Server+ knowledge, and the performance-based questions show why. If you’ve never set up LVM or written a systemd unit, build a lab first. If you’re new to IT entirely, CompTIA suggests A+ or Network+ before Linux+.
CompTIA names these roles for Linux+ V8 holders. None of them maps to a DoD 8140 work role through Linux+ yet, since the certification is still under review for the approved list.
The most direct match for Linux+. Builds, patches and secures Linux servers, manages users, storage and services, and is usually the first person called when a server won’t boot.
Runs the servers, accounts and services an organization depends on, often across Linux and Windows. Linux+ covers the Linux half, from systemd units and package repositories to backups and restores.
Designs and builds server environments instead of only maintaining them. The V8 objectives on KVM and libvirt virtualization, infrastructure as code and unattended installs with Kickstart and cloud-init line up with this work.
Looks after how Linux servers talk to the network: interfaces in nmcli and Netplan, DNS and DHCP, firewalld and nftables rules, and tools like ss, tcpdump and mtr for the day traffic stops.
Takes escalated tickets on Linux systems, from permission errors and full filesystems to services that fail to start. A common entry point for people who already hold A+ or Network+.
Supports build pipelines, containers and configuration management. Domain 4.0 maps here directly, with Bash and Python scripting, Git, Ansible, Docker and Podman Compose, and Kubernetes basics.
Linux+ and Server+ are vendor-neutral CompTIA credentials. RHCSA is Red Hat’s hands-on exam for its own platform. Here’s how the three line up as of October 2026.
| Linux+ | RHCSA | Server+ | |
|---|---|---|---|
| Issuer | CompTIA | Red Hat | CompTIA |
| Focus | Linux server administration | Red Hat Enterprise Linux administration | Server hardware, administration and recovery |
| Platform Scope | Any major Linux distribution | RHEL 10 | Multi-vendor servers |
| Prerequisites | None (rec. 12 months on Linux servers) | None (rec. RH124 and RH134 or RHEL experience) | None (rec. A+ and 2 years with servers) |
| Exam Format | XK0-006, up to 90 items, 90 min | EX200, hands-on tasks on a live system | SK0-005, up to 90 items, 90 min |
| Scoring | 720 of 900 | Pass or fail, with a score breakdown by objective | 750 of 900 |
| Renewal | 3 years, CE program | Current for 3 years, renew by retesting or earning RHCE | 3 years, CE program (since Oct. 1, 2025) |
| Best For | Admins in mixed Linux shops | Teams standardized on RHEL | Server and data center technicians |
Linux+ and Server+ vouchers both list at $399 USD at CompTIA as of October 2026. Red Hat sets EX200 pricing by location, so check its exam page for your country. Server+ moved into CompTIA’s CE program on October 1, 2025, and people who already held it have until October 1, 2027 to renew.
Certification Matchups puts the published facts, strengths and weak spots of two certifications side by side.
Our CompTIA Linux+ boot camp covers all five XK0-006 domains in five days of live, instructor-led training, in person or online. It uses official CompTIA courseware and hands-on Linux labs, and your $399 exam voucher, an exam retake, practice questions and 180 days of one-on-one coaching after class are included. If you’d rather study on your own schedule, the self-paced Linux+ course gives you 365 days of video lessons, labs and practice exams, with the exam voucher included.
Exam prep, voucher costs, and the certifications people take next after Linux+.
What changed from XK0-005 to XK0-006, what each of the five domains tests, what the performance-based questions look like, and how to set up a lab and a study plan for the current exam.
All three Kubernetes exams are hands-on with live clusters. Which one to take first, and why rusty Linux skills slow candidates down on the CKA.
Where Linux+ fits among the CompTIA options after Security+, and why shell fluency matters so much for SOC and penetration testing work.
CompTIA’s automation exam lists Linux+ among its recommended prior certifications. The four domains, the exam format and who it suits once Linux+ is done.
How CompTIA’s stackable credentials combine individual certifications, and where Linux+ and Server+ sit on the systems administration path.
CompTIA’s 2026 price increase, plus the partner, bundle, military, academic and employer options that lower what you actually pay for a voucher.
How to read an objectives PDF like the XK0-006 document, what verbs such as “given a scenario” mean, and how to turn domain weights into a study plan.
The XK0-006 exam is organized into five domains, each carrying its own weight. System Management and Troubleshooting together make up 45 percent of the exam. Click any domain for what it covers.
The largest domain. The boot process (bootloader, kernel parameters, initrd and PXE), the Filesystem Hierarchy Standard, kernel modules and device tools, storage with partitions, LVM, RAID and mount options, network configuration with NetworkManager and Netplan, shell operations, backup and restore with tar, rsync and dd, and virtualization with KVM, QEMU and libvirt. The storage objective alone lists more than 20 LVM commands, so hands-on practice pays off here.
Files and directories, local accounts and groups, processes, signals and job scheduling with cron and at, software and repositories (including GPG signatures and pip, cargo and npm), basic setup of services like Apache httpd, Nginx, DNS and NTP, systemd units and timers, and running containers with Docker, Podman, containerd and runC.
Authentication with PAM, SSSD, LDAP and Kerberos, logging with journalctl, rsyslog and auditd, firewalls with firewalld, ufw, nftables and iptables, sudo, permissions, ACLs and SELinux, SSH hardening, encryption with GPG, LUKS2, OpenSSL and WireGuard, and compliance tools such as OpenSCAP, CIS Benchmarks, AIDE and rkhunter.
The newest domain, split out on its own in V8. Infrastructure as code with Ansible, Puppet and OpenTofu, unattended installs with Kickstart and cloud-init, CI/CD and GitOps, Kubernetes, Docker Swarm and Compose, Bash scripting, Python basics, Git, and an objective on responsible AI use (reviewing generated code before you run it, data governance, local versus public models).
Monitoring concepts (SLAs, SLOs, SNMP, alerts and log aggregation), then fault finding: kernel panics, GRUB misconfiguration, inode exhaustion and failed systemd units, DNS, DHCP, MTU and routing problems, SELinux and certificate issues, and performance symptoms like swapping, high load average and I/O wait. Most objectives here start with "given a scenario", so expect to diagnose rather than define.
Domains and weights reflect the CompTIA Linux+ XK0-006 (V8) exam objectives, document version 5.0. V8 launched July 15, 2025, and CompTIA estimates it will retire around 2028.
The questions candidates ask most often when researching the CompTIA Linux+ certification.
CompTIA Linux+ is a vendor-neutral certification that validates your ability to configure, manage, secure, automate and troubleshoot Linux servers. The current version, V8, is exam XK0-006. CompTIA built it around skills that apply on any major Linux distribution, and it names Linux administrator, systems administrator and DevOps support engineer among the jobs it prepares you for.
The current exam is XK0-006, also called Linux+ V8, which CompTIA launched on July 15, 2025. It replaced the four-domain XK0-005 with five domains, adding a standalone Automation, Orchestration, and Scripting domain that covers Ansible, Puppet, OpenTofu, Kubernetes, Python and Git, plus an objective on responsible AI use. CompTIA estimates V8 will retire around 2028.
Yes. CompTIA retired the English version of XK0-005 (V7) on January 13, 2026, and the Japanese, Portuguese and Spanish versions on April 14, 2026. As of October 2026, XK0-006 is the only Linux+ exam you can book. If a study guide or course still teaches to XK0-005, it was written for the old exam.
No. Linux+ has no formal prerequisites, and you don’t need another certification to register. CompTIA recommends 12 months of hands-on experience working with Linux servers, along with A+, Network+ or Server+ or comparable knowledge. If you’re new to IT, CompTIA suggests starting with A+ or Network+.
XK0-006 has a maximum of 90 questions and a 90-minute time limit. The questions are a mix of multiple choice and performance-based items that put you in a simulated task. You need a scaled score of 720 on a scale of 100 to 900 to pass. You can test at a Pearson VUE center or online with remote proctoring, and the exam is offered in English.
Under XK0-006 the five domains are System Management (23 percent), Services and User Management (20 percent), Security (18 percent), Automation, Orchestration, and Scripting (17 percent), and Troubleshooting (22 percent). System Management and Troubleshooting together make up 45 percent of the exam, so they deserve the most study time.
As of October 2026, CompTIA lists the Linux+ exam voucher at $399 USD in the United States, or $519 for a voucher with Retake Assurance. Pricing outside the U.S. can differ. Training Camp’s Linux+ boot camp and self-paced course both include the exam voucher.
CompTIA lists Linux administrator, systems administrator, network administrator, technical support specialist and DevOps support engineer as roles Linux+ V8 prepares you for, and its Linux+ page also names systems engineer and network engineer. Because Linux+ is not on the DoD 8140 approved list, it doesn’t qualify you for a DCWF work role on its own.
Not yet. CompTIA says Linux+ is under review for approval in the DoD 8140 program and is not currently on the approved list. Its DoDM 8140.03 alignment page lists seven approved CompTIA certifications, including A+, Network+ and Security+, and Linux+ is not one of them. If your position needs an 8140 qualification, check your work role before you pick a certification. See the full DoD 8140 work role paths.
Linux+ is valid for three years. You renew through CompTIA’s Continuing Education program by earning 50 continuing education units in that window, by passing a higher-level CompTIA certification, or by retaking the current Linux+ exam.
Linux+ is vendor-neutral and tests skills across any major distribution with multiple choice and performance-based questions. RHCSA is Red Hat’s credential, earned by passing EX200, a hands-on exam on Red Hat Enterprise Linux 10 where you complete real tasks on a live system. Pick Linux+ if you manage several distributions. On a team standardized on RHEL, RHCSA carries more weight, and it is the required step before RHCE.
CompTIA suggests CySA+, Cloud+ or PenTest+ after Linux+. Admins who work on Red Hat systems can add RHCSA, and anyone moving toward containers can look at the Certified Kubernetes Administrator (CKA), a hands-on exam whose troubleshooting tasks lean on the Linux command line.
CompTIA calls Linux+ an intermediate-level certification and aims it at people with about a year of hands-on Linux server work. The difficulty comes from breadth and the performance-based questions. The objectives put tools from different distribution families side by side (NetworkManager and Netplan, firewalld and ufw, Docker and Podman), and the scenario objectives expect you to apply a command rather than pick it out of a list. Time in a lab VM is the best preparation.
For anyone who runs Linux servers or plans to move into DevOps, cloud operations or security, yes. Linux+ proves command line skills that carry across distributions, V8 gives automation and orchestration a domain of their own, and it renews through the same CE program as your other CompTIA certifications. It’s a weaker pick if your employer runs RHEL and asks for RHCSA by name, or if you need a DoD 8140 qualification today.
Whether you’re weighing the certification, working out funding, or planning training for a team, tell us where you are and we’ll help you map out the right path.