CompTIA Linux+ Certified IT Professional. Exam Overview

Exam XK0-004 issued by CompTIA will verify your knowledge of Linux OS from a vendor-neutral viewpoint. It covers all the key aspects of Linux Server Administration, networking, and security concepts. Therefore, if your goal is to become a CompTIA Linux+ certified expert in the IT field, apply for this test, as sitting for it only takes a maximum of an hour and a half.

However, after the last update, the new exam version has more focus on kernel modules, security, device management, storage and virtualization, git and automation, server and command line alongside networking and firewalls, and many other vital areas of Linux systems.

XK0-004 test costs $338 and is available in English. But, it will soon be available in Portuguese, Japanese, and Spanish too. Then, all standard rules regarding tests apply. You should expect not to have any learning materials with you during XK0-004 exam. Once you are done with it, your results will be communicated to you via email. It should be kept in mind that the test score is based on a scale of 100 to 900, and for you to pass, you should attain at least 720.

The exam includes various questions, such as performance-based, multiple responses, multiple-choice, and fill-in-the-blank. The overall total number of items is not more than 90.

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

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Security

Security is a critical component of managing Linux services and listed below are some of the objectives you should know to pass XK0-004 test:

Summarizing the security best practices commonly used within a Linux environment and explaining their peculiarities;
File backup, restoration, and compression.
Configuring and implementing the right authentication and access methods like PAM, and using Linux commands such as TTY, PTY, and SSH.
Implementing and configuring Linux firewalls with ACL;
Implementing logging services and various Linux log files;
Applying or acquiring fitting user or group ownership and context-based permissions;