Introduction
This book is a companion volume to CompTIA Linux+ Study Guide: Exam XK0-004 (4th ed.). The book will help you prepare for the certification exams by testing your knowledge using questions derived directly from the exam objectives. There are 1,000 questions within this book, divided into chapters based on the objectives. Each of the chapters will test your knowledge on a given exam objective along with its subobjectives. There is also a practice exam at the end covering all exam objectives. The questions are a mix of easy to difficult and will help you prepare for the types of knowledge needed to demonstrate that you can work with Linux systems. To achieve maximum benefit, the book should be used with the corresponding certification study guide. You can also use the book to identify areas where additional study is needed. The following table lists each of the five objective domains in the CompTIA Linux+ exam and the percentage of the exam of each domain. The subobjectives are also listed for each domain. Because each chapter in this book focuses on a specific domain, the mapping is easy: for Domain 1.0, refer to Chapter 1; for Domain 2.0, refer to Chapter 2, and so on. 1.5 Compare and contrast cloud and virtualization concepts and technologies 2.1 Given a scenario, conduct software installations, configurations, updates, and removals 3.1 Given a scenario, apply or acquire the appropriate user and/or group permissions and ownership 3.2 Given a scenario, configure and implement appropriate access and authentication methods 4.2 Given a scenario, analyze system processes in order to optimize performance 4.4 Given a scenario, analyze and troubleshoot application and hardware issuesObjective Map
Objective Domain
Percentage of Exam
Chapter
Domain 1.0 Hardware and System Configuration
21%
1
1.1 Explain Linux boot process concepts
1.2 Given a scenario, install, configure, and monitor kernel modules
1.3 Given a scenario, configure and verify network connection parameters
1.4 Given a scenario, manage storage in a Linux environment
1.6 Given a scenario, configure localization options
Domain 2.0 Systems Operation and Maintenance
26%
2
2.2 Given a scenario, manage users and groups
2.3 Given a scenario, create, modify, and redirect files
2.4 Given a scenario, manage services
2.5 Summarize and explain server roles
2.6 Given a scenario, automate and schedule jobs
2.7 Explain the use and operation of Linux devices
2.8 Compare and contrast Linux graphical user interfaces
Domain 3.0 Security
19%
3
3.3 Summarize security best practices in a Linux environment
3.4 Given a scenario, implement logging services
3.5 Given a scenario, implement and configure Linux firewalls
3.6 Given a scenario, backup, restore, and compress files
Domain 4.0 Linux Troubleshooting and Diagnostics
20%
4
4.1 Given a scenario, analyze system properties and remediate accordingly
4.3 Given a scenario, analyze and troubleshoot user issues
Domain 5.0 Automation and Scripting
14%
5
5.1 Given a scenario, deploy and execute basic Bash scripts
5.2 Given a scenario, carry out version control using Git
5.3 Summarize orchestration processes and concepts