Certified - The CompTIA A+ Audio Course

Once you’ve verified that a problem exists, the next step is to develop and test a theory about what’s causing it. In this episode, we explain how to take what you know and form a hypothesis—whether it’s a failing power supply, bad memory, or driver conflict. You’ll learn how to prioritize possible causes based on likelihood, user behavior, and historical trends with similar hardware or configurat...

This episode focuses entirely on the first step in the troubleshooting process: identifying and verifying the problem. We begin by exploring how to gather information from users, analyze symptoms, and check for obvious indicators like POST codes, beep patterns, or error messages. This phase often includes asking probing questions, checking connectivity, and using visual or audible clues to zero in...

Before you can fix a problem, you need a process—and CompTIA provides one. This episode walks you through the six-step troubleshooting methodology that forms the foundation of effective problem-solving in IT. Starting with identifying the problem and ending with documenting the solution, each step is explained with examples and exam-relevant phrasing. We emphasize the importance of not skipping st...

Troubleshooting is a core skill for any IT professional, and Domain 5.0 of the Core 1 exam focuses exclusively on this area. In this overview episode, we introduce the types of problems you’ll be expected to diagnose and resolve, such as boot errors, display issues, overheating, and hardware failures. You’ll learn how CompTIA frames troubleshooting questions, often providing vague symptoms that re...

This episode explains the hardware and software requirements that must be met for clients to effectively run various types of applications, especially in virtualized or remote environments. We begin by exploring how processor capabilities—such as virtualization support and clock speed—can affect the performance of local V M s or remote desktop sessions. Then we move on to RAM requirements, discuss...

Application virtualization allows software to run in isolated containers, even if the underlying system doesn't support the app natively. In this episode, we explore how virtualized apps differ from traditionally installed ones and what technologies enable them—such as Microsoft App-V or Citrix environments. We also examine how this method can reduce conflicts between programs and allow for better...

Virtual Desktop Infrastructure, or VDI, allows users to interact with desktop environments hosted on centralized servers, and this episode unpacks how the technology works. We explain how VDI differs from local virtualization, what components are required, and how user experience is affected by latency, connection quality, and endpoint devices. The discussion also includes how IT teams manage desk...

In this episode, we explore one of the most common cloud services used by both consumers and businesses: cloud-based storage and file synchronization. You’ll learn how services like Google Drive, OneDrive, and Dropbox allow users to access files across multiple devices and automatically back up critical data. We explain how syncing works in terms of versioning, conflict resolution, and offline ava...

What makes the cloud “cloud-like”? This episode answers that question by introducing key features that define cloud computing platforms. We start with elasticity—the ability to rapidly scale resources up or down depending on workload—and explain how this affects cost and system responsiveness. Then we cover resource pooling and metering, which allow cloud providers to bill customers based on actua...

Cloud service models describe what level of control and responsibility a customer has in a cloud environment, and this episode explains the big three: Software as a Service, Platform as a Service, and Infrastructure as a Service. We begin with SAAS, which provides end-user applications like email, word processing, or storage without requiring any backend management. Next, we cover PAAS, which give...

This episode dives into the different ways cloud infrastructure can be deployed, each with its own use case, control level, and security implications. We begin with public cloud models, where infrastructure is shared and managed by third-party providers like Amazon or Microsoft. Then we explore private clouds, which are dedicated to a single organization and offer full control over security, resou...

Virtualization and cloud computing are among the most transformative technologies in modern IT, and this episode introduces the concepts as laid out in the Core 1 exam’s Domain 4.0. You’ll learn the difference between local virtualization, such as running a VM on a workstation, and cloud-based services like Infrastructure as a Service or Software as a Service. We explain how virtualization affects...

This episode covers the various internal interfaces found on a motherboard and what role each plays in system function. We begin with SATA connectors, explaining their use in connecting storage devices such as hard drives and optical drives. From there, we move to PCIe slots—detailing how different lane configurations like x1, x4, x8, and x16 are used for graphics cards, network adapters, and expa...

Understanding how processors connect to the motherboard is critical for both real-world system builds and the A Plus exam. This episode dives into the various CPU socket types, including popular Intel designs like LGA 1200 and LGA 1700, and AMD sockets like AM4 and sTRX4. We explore the differences between Land Grid Array and Pin Grid Array formats and explain why socket compatibility is key durin...

This episode focuses on one of the most important hardware components you'll encounter: the motherboard. We begin by breaking down motherboard form factors, including full-sized ATX, compact Micro A TX, and ultra-small Mini ITX, explaining how each varies in terms of size, expansion slots, power connectors, and compatibility. You’ll hear how form factor selection affects airflow, case design, and...

Although optical drives are less common today, they’re still covered on the exam and used in legacy and specialty environments. This episode explores the different types of optical media—CD, DVD, and Blu-ray—and explains the distinctions between read-only, writable, and rewritable formats. We also discuss capacity limits and common labeling conventions such as DVD-R and CD-RW. Drive technologies a...

Flash memory is everywhere, from USB drives to camera storage, and this episode focuses on the types, capacities, and formats you’ll encounter on the A Plus exam. We start with USB flash drives—explaining differences in USB versions, transfer speeds, and bootable media options. Then we cover memory cards such a SSD, micro S D, CompactFlash, and x D, outlining their common use cases and compatibili...

This episode explores the most common RAID configurations tested on the A Plus exam and found in real-world systems. We begin with RAID 0, also known as striping, which offers performance benefits but no redundancy. Then we move to RAID 1, or mirroring, which provides full redundancy at the cost of storage efficiency. RAID 5 is explained as a balance between fault tolerance and disk usage through...

This episode focuses exclusively on the different interface types used to connect SSD drives. We begin with SATA-based SSDs and describe how they offer improved speed over HDD but are still limited by the SATA bus. From there, we move into PCI Express-based SSDs, which leverage direct access to the motherboard for ultra-high throughput and extremely low latency. M.2 and mSATA are also explored in...

This episode explores how storage device performance and form factor impact system behavior, reliability, and installation. We begin by comparing rotational speeds of HDD drives—such as 5,400 and 7,200 RPM models—and how that affects read and write performance. Then we shift to SSDs and explain the dramatic speed improvements, reduced latency, and lack of mechanical parts that define solid-state d...

Understanding memory channel configurations is key to improving performance in both desktops and laptops, and this episode covers them in detail. We begin with single-channel configurations and move up through dual-, triple-, and quad-channel arrangements. You’ll learn how motherboards support multi-channel setups and how matching module size, speed, and placement in correct slots affects throughp...

This episode focuses on the various types of system memory covered in the A Plus exam. We start by distinguishing between DDR 3, DDR 4, and DDR 5, outlining differences in voltage, speed, and pin count. You’ll also hear how to identify these modules visually and understand which platforms or chipsets support each type. We emphasize backward compatibility and the risks of inserting the wrong module...

This episode breaks down the many adapter and connector types you're likely to encounter in hardware installation and cabling questions. Starting with RJ45, we explore its use in Ethernet connections, cable crimping, and its role in structured cabling. From there, we cover USB C, highlighting its reversible design, support for data, power, and video transmission, and how it's becoming the universa...

In this episode, we examine the interface types used to connect hard drives and solid-state drives to computing systems. We start with SATA, the most common interface in modern consumer devices, and discuss its evolution across generations in terms of data rate and cable design. We then introduce SCSI, a legacy technology often found in servers and older enterprise hardware, and explain how it dif...

This episode focuses on the common video and peripheral cables that A Plus candidates must be able to identify, differentiate, and troubleshoot. We begin with HDMI, explaining its support for audio and video signals, cable types, and compatibility with newer standards like DisplayPort. From there, we move into VGA—a legacy analog connector still present in older systems—and explore its limitations...