📘 CompTIA Linux+ (XK0-005) Exam Overview and Study Objectives

The CompTIA Linux+ certification (XK0-005) is designed for early-career Linux administrators. This exam validates the essential skills needed to manage, secure, and troubleshoot Linux systems in a professional environment.

🧾 Exam Overview

📚 Domains & Objective Breakdown

1. System Management (32%)

• Understand Linux fundamentals and the Filesystem Hierarchy Standard (FHS)

• Manage files, directories, and permissions

• Configure local storage and partitions

• Build and install software from source

• Use services and process management tools

• Network configuration and troubleshooting

2. Security (21%)

• Implement security best practices and access control

• Identity and user management

• Firewall configuration (e.g., firewalld, iptables)

• Secure remote management (e.g., SSH)

• File integrity, auditing, and hardening practices

3. Scripting, Containers, and Automation (19%)

• Create and run shell scripts for task automation

• Basic container usage and management (e.g., Docker)

• Git basics for version control

• Infrastructure-as-Code concepts

• Understand orchestration tools and container lifecycle

4. Troubleshooting (28%)

• Diagnose and fix:

  • Storage issues (mounts, space, permissions)

  • Network problems (DNS, IP config, services)

  • CPU and memory bottlenecks

  • User access or file permission issues

• Use tools like top, htop, journalctl, and systemctl for diagnostics

📥 Official Objectives PDF

You can download the official exam objectives directly from CompTIA:

🔗 CompTIA Linux+ XK0-005 Objectives (PDF)