CompTIA Linux+ Study Guide

Exam XK0-004

Christine Bresnahan, Richard Blum

• Publisher: Sybex
• Year: 2019
• ISBN:
  9781119556046
• Edition: 4
• Topic: Ciencia de la computación
• Subtopic: Sistemas operativos

The bestselling study guide completely updated for the NEW CompTIA Linux+ Exam XK0-004

This is your one-stop resource for complete coverage of Exam XK0-004, covering 100% of all exam objectives. You'll prepare for the exam smarter and faster with Sybex thanks to superior content including, assessment tests that check exam readiness, objective map, real-world scenarios, hands-on exercises, key topic exam essentials, and challenging chapter review questions.

Linux is a UNIX-basedoperating systemoriginally created by Linus Torvalds with the help of developers around the world. Developed under the GNU General Public License, the source code is free. Because of this Linuxis viewed by many organizations and companies as anexcellent, low-cost, secure alternative to expensive OSs, such as Microsoft Windows. The CompTIALinux+ examtests a candidate's understanding and familiarity with the Linux Kernel. As the Linux server market share continues to grow, so too doesdemand for qualified and certified Linux administrators.

Building on the popular Sybex Study Guide approach, this book will provide 100% coverage of the NEW Linux+ ExamXK0-004 objectives.The book contains clear and concise information onall Linux administrationtopic, and includes practical examples and insights drawn from real-world experience.

• Hardware and System Configuration
• Systems Operation and Maintenance
• Security
• Linux Troubleshooting and Diagnostics
• Automation and Scripting

You'll alsohave access to an online test bank, including a bonus practice exam, electronic flashcards, and a searchable PDF of key terms.

PART I
Gathering Your Tools

Chapter 1
Preparing Your Environment

Before beginning your journey to successfully pass the CompTIA Linux+ certification exam, you need a learning space. A learning space consists of Linux systems (virtual or physical), where you can actively try out, practice, and explore various Linux commands and utilities. Besides reading this book, having a private space to work freely will assist in your success.

You may already have experience working with Linux in your enterprise environment. However, most likely you are using only one Linux distribution. Training with more than one distribution is needed to pass the Linux+ exam.

In addition, your employer may frown upon any risky behavior on its systems. You need to feel free to try out Linux commands that may cause a system to crash. Your own learning space, containing various Linux distributions and their assorted tools, is a key factor in successfully passing the Linux+ certification exam.

This chapter begins by looking at a few items concerning the setup of your learning space environment. We will also explore various Linux distributions for your learning space. At the chapter’s end, we’ll cover a method for accessing the Linux command line.

Setting Up a Learning Space

Your learning space needs to be an environment where you can freely explore Linux and its various distributions (called distros for short) and utilities. Whereas some companies may have a spare Linux server available for you to fully use, many of us are not so lucky. Even if you are a student, with a nice lab environment already set up and available for your use, you may want your own space, where you can explore without restrictions.

Though there are many different ways to set up your personal learning space, we will focus on only a few, such as setting up Linux on an old laptop, implementing a virtualized environment, and using the cloud. Hopefully the ideas here will spur you on to setting up a helpful exploration and study environment.

Using That Old Laptop

If you’ve got a spare or old laptop sitting around, repurposing it as your Linux learning space may work well for you. This is especially useful if you like to move your study environment, such as, for example, moving to a different and quieter location in your home when things get a little loud and crazy. An old desktop will also work, but you will be less mobile.

Whatever system you choose, you need to ensure that it has enough capacity to handle the minimum hardware requirements for a learning space. If you plan on installing multiple Linux distributions on a single system, booting them individually, and not using a virtualized environment, then Table 1.1 will serve as your requirements guide.

Table 1.1 Hardware requirements for using single distribution at a time

Resource	Minimum	Recommended
Memory	2GB	>= 4GB
Free disk space	25GB	>= 30GB
Processor	2GHz dual core	> 2GHz dual core

Though you can use this learning space, it is certainly not ideal. In addition, you can expect this type of Linux learning environment to boot and operate slowly. This learning space environment should b...