Job roles and salaries

If you learn all the skills and knowledge required for the successful completing of the CompTIA XK0 004 exam, you will be able to obtain the Linux+ certification that will improve your career. Thus, it will guarantee you a higher salary, respect from your peers and colleagues, and even possible promotion. With the CompTIA Linux+ certificate, you are able to land a job in many companies and become a Technical Architect, a Linux System Administrator, a Technical Support Specialist, a Web Administrator, a Network Administrator, a Systems Administrator, a Cloud Automation Engineer, or an Advanced Diagnostic Engineer. The annual salary that you can earn if you choose one of the options can be from $54,000 to $160,000.

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

CompTIA XK0-004: Skills Measured

This certification exam is designed to validate the skills and knowledge of the IT professionals with practical experience in supporting, configuring, and monitoring the servers that are functioning on the Linux operating system. The test focuses on a variety of topics, including security, storage and virtualization, kernel models, device management within an enterprise, networking and firewalls, troubleshooting & SELinux, git and automation, server-side & command line, and server versus client-based coverage. The highlights of the domains included in the exam syllabus are enumerated below:

• Linux Troubleshooting & Diagnostics: 20%

  The test takers should be able to demonstrate their knowledge and skills in analyzing and remediating system properties; analyzing system processes for optimizing performance; analyzing and troubleshooting user issues; analyzing and troubleshooting hardware and application issues.

• Systems Operation & Maintenance: 26%

  The examinees should have competence in conducting software installations, updates, configurations, and removals; managing groups and users; creating, redirecting, and modifying files; managing services; describing and summarizing server roles; scheduling and automating jobs. The individuals should also be able to describe the operation and usage of Linux devices and compare and contrast the graphical user interfaces of Linux.

• Automation & Scripting: 14%

  This subject area requires one’s skills in executing and deploying fundamental BASH scripts; performing version control with the use of Git; summarizing orchestration concepts and processes.

• Security: 19%

  This section requires the students’ skills and competence in acquiring or applying the relevant group or/and user ownership and permissions; configuring and implementing the relevant authentication and access methods; summarizing best practices within the Linux environment; implementing logging services; backing up, restoring, and compressing files.

• Hardware & System Configuration: 21%

  This topic measures the ability of the candidates to describe the concepts of a Linux boot process; verify and configure the network connection parameters; manage storage within the Linux environments; compare and contrast virtualization and Cloud technologies and concepts; configure localization alternatives.

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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:

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