CompTIA Linux+ Study Guide (2026) - Pass on Your First Attempt
📋 2026 Edition  ·  Updated May 2026

CompTIA Linux+
comptia-linux-plus Study Guide — Pass First Attempt

Complete exam coverage for the CompTIA Linux+. Every domain, every key topic — structured so you study smart, not hard. Built around the official exam blueprint.

90
Questions
90 min
Duration
72
Passing score
4
Domains
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92%
First-attempt pass rate
47K+
Candidates prepared
4.9★
Average rating
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System Management
—
Security
—
Scripting, Containers, and Automation
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Troubleshooting
—
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Exam at a Glance

Everything you need to know before you start

Key facts about the CompTIA Linux+ exam structure, format, and scoring.

🆔
comptia-linux-plus
Exam code
📝
90 questions
Total questions
⏱
90 minutes
Duration
🎯
72
Passing score
📋
4 domains
Exam domains
📅
Valid 3 years
Certification validity
🌐
Online / In-person
Testing mode
🏆
Globally recognised
Credential type
ℹ️
Scoring method: Scaled scoring on a 100–900 scale. Passing score is 720. Performance-based questions are weighted more heavily than standard MCQs. No negative marking.. The exam may include unscored pilot questions — treat every question seriously.
Focus Areas

What should you study for the CompTIA Linux+ exam?

To pass the CompTIA Linux+ certification exam, you should focus on these core domains. The exam tests your ability to apply concepts in real-world scenarios — not just memorise definitions.

⚠️
Common mistake: Candidates memorise terminology but struggle with scenario-based questions. Focus on when to use what, not just what exists.
🔐
System Management (32%)
Covers Linux system configuration, storage management, networking, package management, and system services.
🏗
Security (21%)
Covers Linux security best practices, access controls, authentication, SELinux/AppArmor, and data security.
⚡
Scripting, Containers, and Automation (19%)
Covers Bash scripting, version control with Git, container management with Docker and Kubernetes, and infrastructure as code concepts.
💰
Troubleshooting (28%)
Covers methodologies and tools for troubleshooting hardware, storage, networks, applications, and security issues on Linux systems.
Full Syllabus

CompTIA Linux+ Exam Syllabus and Topics

The CompTIA Linux+ exam is divided into 4 domains. Each domain tests specific skills and contributes to your overall score. Click any domain to expand topics.

System Management
Covers Linux system configuration, storage management, networking, package management, and system services.
32% ▼
System Configuration
Boot process and GRUB
Systemd units and targets
Kernel management and parameters
Hardware configuration
Localization and time zone settings
Storage Management
Partition management (MBR, GPT)
LVM (Logical Volume Management)
Filesystem creation and mounting (ext4, XFS, Btrfs)
RAID configurations
Storage troubleshooting
Networking
Network configuration (IP, DNS, DHCP)
NetworkManager and nmcli
Firewalling with firewalld and iptables
SSH configuration and tunneling
Network diagnostics
Package Management
APT and dpkg (Debian-based)
YUM, DNF, and RPM (RHEL-based)
Compiling from source
Repository management
System Services
Managing services with systemd
Scheduling tasks (cron, at, anacron)
Logging with journald and syslog
Print and email services
~29 questions
29 marks
32% of exam weight
Security
Covers Linux security best practices, access controls, authentication, SELinux/AppArmor, and data security.
21% ▼
User and Group Security
User and group management
Sudo and privilege escalation
PAM (Pluggable Authentication Modules)
Password policies
Access Control
File permissions (chmod, chown)
ACLs (Access Control Lists)
SELinux (modes, contexts, policies)
AppArmor profiles
Data and Network Security
Encryption (GPG, OpenSSL)
PKI and certificate management
VPN fundamentals
SSH hardening
Auditing with auditd
~19 questions
19 marks
21% of exam weight
Scripting, Containers, and Automation
Covers Bash scripting, version control with Git, container management with Docker and Kubernetes, and infrastructure as code concepts.
19% ▼
Shell Scripting
Bash scripting syntax
Variables, loops, and conditionals
Functions and exit codes
Regular expressions and text processing (grep, awk, sed)
Script debugging
Version Control
Git fundamentals
Branching and merging
Remote repositories
Containers and Orchestration
Docker concepts and commands
Container images and registries
Kubernetes basics
Container security
Docker Compose
Infrastructure as Code
Ansible playbooks
Configuration management concepts
Infrastructure automation tools
~17 questions
17 marks
19% of exam weight
Troubleshooting
Covers methodologies and tools for troubleshooting hardware, storage, networks, applications, and security issues on Linux systems.
28% ▼
Troubleshooting Methodology
Systematic troubleshooting approach
Log analysis (journalctl, /var/log)
Performance monitoring tools (top, htop, vmstat, iostat)
Hardware and System Troubleshooting
CPU and memory issues
Storage failures
Boot failures and rescue mode
GRUB troubleshooting
Network Troubleshooting
Connectivity diagnosis (ping, traceroute, netstat, ss)
DNS troubleshooting
Firewall rule issues
Interface configuration problems
Application and Security Troubleshooting
Service failure diagnosis
SELinux/AppArmor denials
Permission and ownership issues
Container troubleshooting
~25 questions
25 marks
28% of exam weight
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Study Plan

CompTIA Linux+ Structured Study Roadmap

Designed for candidates studying 1-2 hours per day. Select your timeline below.

Exam Strategy

Tips to pass CompTIA Linux+ on your first attempt

Tactical advice beyond content knowledge — what separates candidates who pass from those who retake.

🗓
Build a hands-on Linux lab using VirtualBox or a cloud VM — Linux+ heavily tests practical skills via performance-based questions.
🔍
Troubleshooting (28%) and System Management (32%) together cover 60% of the exam — prioritize these two domains.
⏭
Practice the complete boot process: BIOS/UEFI → GRUB → kernel → initrd → systemd.
📊
Master LVM commands: pvcreate, vgcreate, lvcreate, lvextend, and resizing filesystems.
🔁
Learn SELinux contexts and common troubleshooting: use getenforce, setenforce, restorecon, and audit2allow.
🧪
Practice Bash scripting with loops, conditionals, and functions — PBQs often require writing or debugging scripts.
📝
Know Docker commands thoroughly: docker run, build, push, pull, ps, exec, images, and volume management.
🎯
Study systemd deeply: systemctl commands, unit files, targets, dependencies, and journal logging.
🗓
Understand both APT/dpkg (Debian/Ubuntu) and YUM/DNF/RPM (RHEL/CentOS) package management.
🔍
Use CompTIA's official CertMaster Learn or Practice tools, and simulate PBQs in a live Linux environment.
Recommended Resources

Official and trusted study materials

Curated resources ranked by usefulness. Quality over quantity — focus on a small set of authoritative sources.

Official
Official Exam Guide
The authoritative blueprint. Know every objective before studying anything else.
→ Vendor website
Practice Tests
Edureify Practice Tests
Full-length CompTIA Linux+ simulations with detailed per-domain analysis and explanations.
→ Start free test
Video Course
Structured Video Course
Pick one highly-rated course and complete it end-to-end before switching resources.
With edureify Convert Tutorial to AI Tutor
Reference
Domain Cheat Sheets
One-page summaries for each CompTIA Linux+ domain — ideal for last-week revision.
→ Get free Cheat Sheet
Community
Study Groups & Forums
Reddit r/certifications and exam-specific Discord servers for peer support and tips.
→ Reddit / Discord
AI Tutor
Edureify AI Mentor
Get instant answers to CompTIA Linux+ concepts, domain-level weak-area coaching, and adaptive questions.
→ Try free
⚠️
Avoid brain dumps. Sites selling "real exam questions" violate most vendor NDAs and are legally risky. Questions rotate regularly — brain dumps lead to overconfidence on outdated material and a higher retake rate.
Reviews

What candidates say after passing

★★★★★
"Passed CompTIA Linux+ on my first attempt after 5 weeks. The domain-level diagnostic showed me exactly where my gaps were — I stopped wasting time on topics I already knew."
Rahul S.
Solutions Architect, Bangalore
★★★★★
"The structured study plan kept me on track. I tried studying on my own for 3 months and failed. With Edureify's roadmap I passed in 6 weeks."
Priya M.
Cloud Engineer, Mumbai
★★★★★
"The AI mentor was like having a personal tutor available at 2am. Every concept I didn't understand was explained until I got it. Invaluable for the System Management domain."
David K.
DevOps Engineer, London
FAQ

Frequently asked questions about CompTIA Linux+

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