CompTIA Linux+ XK0-004 exam aims to validate the skills of Linux professionals. These topics are covered: security, kernel modules, storage & virtualization, device management at an enterprise level, git & automation, networking & firewalls, server side & command line, server (vs. client-based) coverage, troubleshooting and SELinux.Our study flash notes are designed to help you learn as many key facts and details as possible. We focus on the most important facts and details (those silly and boring details many exam takers are complaining about) that may show up in your exams. The goal is to allow you to take advantage of short periods of time throughout your busy workday! And you will find them handy as a quick preview and review before and after having studied the full blown textbooks!