Windows, macOS & Linux Fundamentals

Overview

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This course introduces the three major operating systems covered on the CompTIA A+ Core 2 exam — Windows, macOS, and Linux — with a focus on how each is installed, configured, and used in real-world IT support environments. Learners benefit from building solid OS literacy across all three platforms, including how to navigate interfaces, manage files, and understand the foundational roles of power supplies and storage in a working system. Hands-on online labs put these skills into practice through guided, scenario-based exercises.

Syllabus

All about the CompTIA A+

This chapter introduces the promotional and instructional content for CompTIA A+ (

Safety and Professionalism

This chapter explains the importance of strong communication, professionalism, and safety skills for technicians, including handling difficult customers and using proper protective procedures.

Introduction to Computers and Operating Systems

This chapter introduces essential PC safety and hardware basics, then surveys the major operating systems—Windows, macOS, and Linux—focusing on their features, user accounts, and roles in modern computing.

Power Supplies

This chapter explains that because electrical power can fluctuate and generate excess heat, systems rely on protection devices and advanced cooling methods to stay stable during demanding tasks.