Operating Systems Fundamentals

Operating system knowledge is essential for troubleshooting, performance tuning, and secure infrastructure operations.

Topics

• linux/ Linux command line, processes, filesystems, and permissions
• networking/ TCP/IP, DNS, routing, and troubleshooting basics
• security/ Hardening, authentication, and access control

Core Skills

• Process and service management
• File and permission management
• System resource monitoring
• Network diagnostics
• Basic host security practices