CompTIA Linux+ (XK0-006)

Objectives in this domain

• Understand Linux fundamentals: boot process, kernel, filesystems, and CPU/architecture basics
• Manage devices and kernel modules using appropriate hardware and device utilities
• Configure storage with LVM, RAID, partitions, and mounted filesystems
• Set up network basics: hosts, DNS, interfaces, and common network tools
• Use the shell effectively: navigation, editing, redirection, and environment variables
• Perform backups and restores, including archiving, compression, and data recovery
• Work with virtualization: deploy hypervisors, create VMs, and manage disk images

Objectives in this domain

• Control files and directories: permissions, links, and special file types
• Administer user and group accounts (add, modify, remove)
• Monitor and manage processes: states, priorities, and job scheduling
• Manage software packages and repositories (install, update, remove)
• Operate and review system services, logs, and timers
• Use containers: run container engines, manage images, and configure container networks

Objectives in this domain

• Configure authentication and accounting with PAM, LDAP, and Kerberos; enable auditing
• Implement host firewalls with iptables, nftables, UFW, and zone-based rules
• Harden OS settings: permissions, sudo configuration, and secure remote access
• Apply account security: password policies, restricted shells, and MFA
• Use cryptography: file encryption, hashing, and certificate management
• Maintain compliance: integrity verification, security scans, and standards adherence

Objectives in this domain

• Automate tasks with tools such as Ansible and Puppet; integrate with CI/CD workflows
• Create and troubleshoot shell scripts using variables, functions, and control flow
• Apply Python basics: virtual environments, packages, and core data types
• Use Git for version control: workflows, branching, tagging, and commits
• Follow AI-related best practices, including responsible code generation and prompt engineering

Objectives in this domain

• Monitor system health, review logs, and respond to alerts
• Diagnose and repair hardware, boot, mount, and storage issues
• Resolve network problems: firewalls, routing, DNS, and connectivity
• Fix security issues including SELinux contexts, permissions, and vulnerabilities
• Analyze performance (CPU, memory, I/O) and tune systems for responsiveness