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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:

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

Linux Troubleshooting and Diagnostics

This area will confirm if a student can examine the properties of a system and remediate accordingly. What's more, it focuses on the analysis of system processes for optimizing performance, the analysis and troubleshooting of user issues, and analysis and troubleshooting of hardware and application issues. Within this section, you will describe network & storage configuration, CPU, and SELinux.

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

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