Operating Systems: Overview, Administration, and Security

Module 1. Introduction to Operating Systems

Provides foundational knowledge of what operating systems are, their role in managing computer hardware and software resources, and fundamental concepts such as processes, memory management, file systems, and user interfaces. This module sets the stage for deeper dives into specific platforms and administration tasks.Key topics: OS definitions, history, components, kernel vs. user space.

Module 2. Windows Operating Systems

Focuses on the architecture, components, and core functions of Microsoft Windows environments. Learners explore file systems, directory structure, process and memory management, and the Windows command-line ecosystem. Practical tasks include basic system navigation and administrative operations.Key topics: Windows file system, directory structure, user accounts, command prompt tools, and Windows Server basics.

Module 3. Windows Security and Hardening

Dedicated to understanding and applying security configurations specific to Windows. This module covers how to protect systems from common threats, configure firewalls and antimalware tools (e.g., Windows Defender rules), apply patches safely, and use auditing and authentication mechanisms (such as Kerberos) to strengthen system defenses.Key topics: Firewall rules, system updates, patch management, auditing, authentication services.

Module 4. Linux Operating Systems

Introduces Linux fundamentals and the Unix-like operating model. Students learn how to navigate the Linux command line, manage users and permissions, understand file system structures, and perform administrative tasks such as process monitoring and package management.Key topics: Shell commands, directory structures, user management, basic scripting.

Module 5. macOS Fundamentals and System Management

Explores the macOS platform — its interface, system preferences, filesystem, and how it differs from other OS families. This module also includes virtualization basics (e.g., creating and using virtual machines) that support multi-OS testing and lab environments.Key topics: macOS features, system configuration, virtualization concepts.

Module 6. Virtualization and Containers

Focuses on modern abstraction technologies that extend OS capabilities. Learners investigate how virtualization and containerization (e.g., Docker) enable scalable deployment, resource isolation, and development/test consistency across environments.Key topics: Virtual machines, hypervisors, containers, cloud-hosted workloads.

Module 7. Operating System Administration Best Practices

Covers everyday administrative tasks essential for maintaining healthy operating environments. Topics include managing updates and patches, configuring backups, monitoring system performance, and troubleshooting common issues.Key topics: Patch cycles, logs and auditing, performance assessments.

Module 8. Security Principles Across Operating Systems

Introduces core security concepts applicable to all platforms. Learners study access control mechanisms (permissions and roles), authentication methods, encryption basics, and common threats (malware, privilege escalation). This module emphasizes proactive security hardening alongside reactive defense.Key topics: Access control, encryption, threat recognition, secure configuration.

Module 9. Capstone/Final Project

Applies acquired skills in a hands-on project that simulates real-world scenarios. Students demonstrate proficiency in managing, configuring, and securing multiple operating systems, including setting up virtual environments and implementing defence strategies.Deliverables: Practical tasks, documentation of system hardening steps, security checklist.