What is CertMaster Practice?
CompTIA CertMaster Practice is an online knowledge assessment and training companion tool to help you prepare for your CompTIA certification exam. Featuring an adaptive question-first design, CertMaster Practice quickly assesses what you already know and what you still need to learn. For those topics where you need more support, CertMaster Practice provides personalized remediation and feedback. Once you’re ready, you can demonstrate your knowledge on a timed practice test complete with performance-based questions.
- Speed-up learning
- Increase retention
- Build confidence
Module 1: Hardware and System Configuration
Module 2: Systems Operation and Maintenance
Module 3: Security
Module 4: Linux Troubleshooting and Diagnostics
Module 5: Automation and Scripting
- One CompTIA CertMaster Practice for Linux+ (XK0-004) license
- Once activated, CertMaster Practice for Linux+ (XK0-004) is valid for 12 months
How to Access CertMaster Practice
An access key and instructions will be sent after your purchase is complete.
You may then login anytime at
About CompTIA Linux+
The new CompTIA Linux+ is for the IT pro who will use Linux to manage everything from cars and smartphones to servers and supercomputers, as a vast number of enterprises use Linux in cloud, cybersecurity, mobile and web administration applications.
CompTIA Linux+ is the only job-focused Linux certification covering the latest foundational skills demanded by hiring managers. Unlike other certifications, the new exam includes performance-based and multiple-choice questions to identify the employees who can do the job. The exam covers tasks associated with all major distributions of Linux, setting the foundation for advanced vendor/distro-specific knowledge.
The new exam has an increased focus on the following topics: security, kernel modules, storage & visualization, device management at an enterprise level, git & automation, networking & firewalls, server side & command line, server (vs. client-based) coverage, troubleshooting and SELinux.
For the latest information on the new CompTIA Linux+ exam, please visit