CompTIA Linux+ Certification : XK0-004

Exam Code: XK0-004

Exam Name: CompTIA Linux+ Certification Exam

Updated: Oct 13, 2026

Q & A: 485 Questions and Answers

XK0-004 Free Demo download

PDF Version Demo PC Test Engine Online Test Engine

About CompTIA Linux+ Certification certification

What is the duration of the XK0-004 Exam

Length of Examination: 90 minutes
Number of Questions: 90
Format: Multiple choices, multiple answers
Passing score: 720

Reference: https://certification.comptia.org/certifications/linux#overview

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CompTIA XK0-004: Exam Structure

The CompTIA XK0-004 exam contains a maximum of 90 questions. The question formats that appear in the test are performance-based, multiple response, fill in the blank, and multiple choice. The students have 90 minutes to complete all of these questions. At the present moment, the exam can be taken in English only. The Spanish, Japanese, and Portuguese languages will be available soon. To achieve the passing score, the candidates must have at least 720 points on a scale of 100-900. They should register for and schedule the test through the Pearson VUE website. They have to pay the fee of $338 before completing the registration process. The individuals can sit for the exam online or at one of the Pearson VUE testing centers across the world.

CompTIA XK0-004 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security	19%	- System Hardening 1. Password policies and PAM 2. Audit logs and monitoring 3. Vulnerability mitigation - Network Security 1. SSH secure access 2. TCP wrappers and network hardening 3. Firewall configuration: iptables, firewalld - Filesystem and Data Security 1. Encryption and secure data deletion 2. File permissions and ACLs 3. Partition security
Topic 2: Systems Operation and Maintenance	26%	- Command Line Interface 1. File management and editing 2. Input/output redirection 3. Text processing utilities - Process and Service Management 1. Systemd and SysVinit services 2. Scheduling jobs: cron and at 3. Monitor and manage running processes - User and Group Administration 1. Permissions and ownership 2. Create, modify, delete users and groups 3. Authentication and sudo configuration
Topic 3: Linux Troubleshooting and Diagnostics	20%	- Resource and Application Troubleshooting 1. Process and service failures 2. Log analysis and diagnostics 3. Memory, CPU, disk utilization - Network and Connectivity Issues 1. Network performance issues 2. DNS and service connectivity 3. IP configuration and routing problems - Boot and System Issues 1. Kernel and hardware errors 2. Bootloader problems 3. Filesystem corruption repair
Topic 4: Automation and Scripting	14%	- Bash Shell Scripting 1. Command substitution and functions 2. Variables, loops, and conditionals 3. Input/output handling - Task Automation 1. Scheduling and batch processing 2. Script debugging and validation 3. Basic configuration management
Topic 5: Hardware and System Configuration	21%	- Network Configuration 1. DNS, routing, and network services 2. Network interfaces and settings 3. Network troubleshooting tools - System Architecture 1. Storage and filesystem management 2. Filesystem hierarchy standard 3. Hardware configuration 4. Boot process and init systems - Installation and Package Management 1. Package managers: RPM, DPKG, YUM, APT 2. Install Linux distributions 3. Kernel modules and drivers

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