Certified - The CompTIA A+ Audio Course

Securing a system starts with built-in operating system tools, and this episode walks you through three key Windows security features. First is Windows Defender, which provides real-time protection against malware, network attacks, and unwanted software changes. We explain how to configure scanning, quarantines, and exclusion lists. Next is BitLocker, Microsoft’s full-disk encryption solution, whi...

This episode explains the technical underpinnings of some of the most dangerous threats and vulnerabilities in modern systems. We start with zero-day exploits, where attackers take advantage of unknown software flaws before patches can be released. These are especially damaging because traditional defenses often can’t detect them. Next, we explore structured query language injection—SQLi—an attack...

Not all threats are technical—some are psychological. This episode focuses on social engineering attacks, which trick users into revealing information or granting access through manipulation rather than code. We start with phishing, covering both traditional email attacks and newer variants like spear phishing and smishing. You’ll learn what signs to look for and how users can be trained to respon...

Preventing malware infections involves more than just scanning files—it’s about layering multiple defenses. In this episode, we start with antivirus and antimalware software, explaining how they use signature detection, heuristic analysis, and behavioral monitoring to stop threats. We describe how these tools are managed, updated, and configured for real-time protection across operating systems. N...

This episode dives into the various types of malicious software, or malware, that technicians must be able to recognize and address. We begin with viruses, which attach to legitimate files and require user interaction to spread, then move into worms, which self-replicate across networks and can bring down systems without any user action. We explain how these differ in propagation methods and damag...

Authentication protocols ensure that users are who they say they are, and this episode covers three of the most important ones for the A Plus exam. We begin with RADIUS—Remote Authentication Dial-In User Service—and explain how it centralizes authentication for wireless and VPN access. Next, we look at TACACS Plus, a Cisco-designed protocol that separates authentication, authorization, and account...

Wireless security standards are a frequent source of exam questions, and this episode breaks down the differences between key protocols. We start with WPA2 and WPA3, explaining how each provides encryption and authentication for wireless traffic, and why WPA3 is considered more secure with protections like forward secrecy and better brute-force resistance. We then contrast older protocols like WEP...

This episode introduces Active Directory (AD), Microsoft’s central system for managing users, computers, and security in domain-based environments. We explain how AD organizes resources into domains, trees, and forests, and how Group Policy Objects (GPOs) are used to enforce settings across multiple systems automatically. You'll learn about domain controllers and how they authenticate logins and a...

In this episode, we move into the digital layer of defense, exploring logical security techniques that help ensure users access only what they’re authorized to. We start with multi-factor authentication (MFA), detailing its components—something you know, have, or are—and why it’s so effective. Then we look at access control lists (ACLs), which define who can access files, folders, and systems base...

Protecting physical assets is the first line of defense in cybersecurity, and this episode explores the methods used to safeguard devices and facilities. We begin with door locks, cable locks, and biometric scanners—tools used to restrict access to equipment and data. Then we move into mantraps and security guards, which provide controlled entry to secure zones and deter unauthorized personnel. We...

This episode introduces Domain 2.0 of the Core 2 exam: Security. We provide an overview of the key areas covered, including physical security measures, logical access controls, malware prevention, authentication protocols, and data destruction practices. You’ll hear how CompTIA frames security as both a technical and procedural discipline that must be applied to desktops, laptops, mobile devices,...

This episode focuses on disk setup and system maintenance—key areas tested on the A Plus exam and vital for support professionals. We begin with partitioning: the process of dividing a physical disk into logical sections. You’ll learn the difference between MBR and GPT partitioning, and how to configure primary, extended, and logical partitions using Disk Management or command-line tools. Formatti...

Installing an operating system requires choosing the right method for the environment, and this episode explores all the major approaches. We start with the most familiar: bootable USB drives created using tools like Rufus or the Windows Media Creation Tool. Then we introduce PXE booting, which allows network-based installations using a centralized server and is commonly used in enterprise environ...

Operating systems, like all software, go through a defined life cycle—from launch to end of support—and this episode walks you through what each stage means. We begin by outlining the general stages: mainstream support, extended support, and end of life. You’ll learn how these stages affect security updates, driver support, and vendor troubleshooting assistance. We also examine how OS life cycle s...

This episode explores the filesystems used by various operating systems, each with its own capabilities and use cases. We begin with NTFS, the default for Windows, explaining its support for file permissions, compression, encryption, and large volume sizes. Then we cover exFAT, which bridges compatibility between Windows and macOS, and is commonly used on USB drives and SD cards for its broad devi...

Not all operating systems are created equal, and this episode explores the strengths, purposes, and distinctions among the most common ones. We start with Windows—still the dominant OS in enterprise environments—and explore its versatility, support base, and administration tools. Next, we cover macOS, highlighting its tight hardware integration and common use in creative industries. Linux follows,...

This episode focuses on the broader implications of application use and performance in business environments. We begin by analyzing how resource-hungry applications can affect system performance—leading to slow response times, overheating, or reduced battery life. We also examine how apps may consume excessive network bandwidth, resulting in congestion and reduced productivity. From a business per...

Installing software isn’t just about double-clicking an installer anymore—it can come from a wide range of sources and methods. In this episode, we explore the most common installation types: local setup files, network shares, Group Policy deployment, and web-based installers. We also discuss digital storefronts like the Microsoft Store and their advantages and limitations. You’ll learn how instal...

Before installing software, it’s essential to confirm that a system meets the application’s requirements. This episode explains how to assess compatibility based on OS version, architecture, memory, storage, and graphics capabilities. We also cover how to interpret software documentation and compare it against system specs to avoid installation failures. We go on to discuss compatibility settings...

This episode explores a variety of network connection types and how they're configured or supported within a Windows environment. We begin with Virtual Private Networks (VPNs)—how they provide secure tunneling for remote access and what authentication methods are commonly used. Next, we explain proxy settings and their effect on web access and application communication. We also walk through the se...

IP addressing is the foundation of network communication, and this episode provides a deep dive into how it's configured on Windows systems. We explain how to assign a static I P address manually, including setting the subnet mask, default gateway, and primary and secondary DNS servers. Then we show how to switch back to dynamic addressing using DHCP when appropriate. We also review how improper I...

Understanding the difference between workgroups and domains is essential for both configuring and supporting business environments. In this episode, we define what a workgroup is—typically a decentralized network for home or small office setups where each machine manages its own users. We contrast that with a domain, where a central domain controller handles user authentication, permissions, and p...

This episode moves into the modern Windows Settings interface, highlighting how it’s used to manage essential system configurations. We start with Windows Update—how updates are delivered, paused, and configured in terms of restart behavior and update types. Next, we cover privacy settings, including location tracking, app access to camera and microphone, and diagnostics data collection. We also e...

Windows File Explorer is the graphical gateway to your files, drives, and folders, and this episode focuses on how to use it efficiently and troubleshoot common issues. We cover view settings, file extensions, hidden items, and folder options that affect how users interact with the file system. You’ll learn how to access mapped drives, navigate the address bar, and manage file types through proper...

This episode explores the legacy yet still-relevant Control Panel utilities that continue to play an essential role in Windows system management. We begin with Windows Firewall, explaining how to allow or block applications, configure advanced rules, and manage notifications for both public and private networks. Next, we review the User Accounts utility—how to add or remove users, change account t...