What actually works for studying for the CompTIA A+
The A+ exam is two tests you have to pass in sequence. Core 1 is 220-1101 and Core 2 is 220-1102. You pick up a CompTIA A Exam Study Guide that covers both, usually around 800 to 1100 pages depending on the publisher, and then you spend however long it takes to get through it. Most people treat it like a novel. That does not work. I bought my first official study guide back in 2018, right before I took the exam myself. I read it cover to cover in about three weeks. I scored 680 on Core 1. Passing score is 675. I passed by five points. On Core 2 I got 690, also barely. It turned out reading the guide straight through was the wrong move because the exam tests application, not recognition. I knew the definitions but I kept second-guessing myself on scenario-based questions where two answers looked right.
CompTIA A Exam Study Guide: picking the right one and how to use it
There are basically three main guides people actually use. Mike Meyers has the Sybex version, which is thick and has a lot of detail and color diagrams that help with hardware identification. CompTIA's own official study guide is more austere but it matches the exam objectives structure almost line-by-line, which matters more than you might think. Jason Dion's guide is shorter and more condensed, good if you already know some of the material and just need to fill gaps. What matters more than which guide you buy is how you use it. Go through the exam objectives first. Print them out from CompTIA's website. They are free. Then open the guide and look at each objective heading. Mark what you know, what you kind of know, and what you do not know at all. Spend your time on the things you do not know. The people who skim the stuff they already understand waste about forty percent of their study time. After you go through once, close the book and do practice questions. Not the ones at the end of each chapter. Get a separate question bank. Dion and Messaggio both have question banks that cost around thirty dollars and they are worth it. The explanations in those banks are sometimes better than the explanations in the guides themselves. When you get a question wrong, do not just read the answer and move on. Write down why you picked the wrong answer. That is where the actual learning happens.
One thing most people miss is the performance-based questions. These are the simulation-type questions at the start of each exam section. They look like you are actually moving Windows settings around or dragging and dropping components into slots. I spent about ten hours doing these before my second attempt and it changed my score by roughly forty points. The interface is clunky and not intuitive. You get maybe fifteen to twenty minutes per PBQ, which feels tight when you are still learning how the drag-and-drop works. Here is a specific edge case that tripped me up: the exam asks about Windows registry editing and command-line tools in ways that feel very practical but the answers are not always the most obvious technical choice. For example, there was a question about using DISM to repair a Windows image and the options included sfc /scannow,DISM /Online /Cleanup-Image /RestoreHealth, and a few other commands. The right answer was DISM first, then sfc. The guide mentions both commands but does not emphasize the order strongly enough. I missed that nuance on my first pass. I had to look at a video walkthrough on YouTube to really see why DISM has to run first to fix the component store before sfc can use it to repair individual files. Another counter-intuitive thing: the exam does not test deep troubleshooting methodology as much as people assume. You do not need to know the exact logical steps of a systematic troubleshooting process in isolation. What you need to know is whether you recognize the first step in a scenario. The CompTIA troubleshooting methodology has six steps and the exam loves to ask what you should do first when a user reports something broken. The answer is almost always "identify the problem" or "gather information," but they phrase it differently every time. The guide covers this in a single section but it shows up in at least twelve to fifteen questions across both exams.
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Mobile device questions also show up in unexpected quantities. You need to know the difference between IPS and TN panels, capacitive versus resistive touchscreens, and the basics of laptop inverter versus LED backlight systems. The Meyer guide does a better job with hardware visuals than the official CompTIA guide, which is just text-heavy tables. I would lean on Meyer for mobile and hardware sections and use the official guide for the networking and security portions, since CompTIA tends to align those chapters more closely with what they actually ask. There is a downside to using study guides alone. They cannot replicate the hands-on part. Core 1 has questions about ROM, RAM types, CPU sockets, and connector types that are much easier to remember if you have actually held the parts. I went to a local computer repair shop and asked if I could look at their scrap bins. They let me take a box home. I spent two evenings just matching connectors to their names and descriptions. That took maybe three hours total and improved my hardware section accuracy significantly more than reading another chapter. If you are on a tight budget, the study guides are not free but the rest of the material is. The exam objectives are free. Practice questions from YouTube channels like Professor Messager and Jason Dion are free. The CompTIA website has a sample question for each exam. That is not much but it shows you the format. You do not need to spend money on a $150 boot camp unless you are the type of person who needs structured deadlines to study.
The biggest bottleneck people run into is time management during the exam itself. You get 90 minutes for Core 1 and 90 minutes for Core 2. That sounds generous. It is not, especially with the performance-based questions eating into your time at the beginning. I had about 75 minutes left for 65 multiple-choice questions on Core 1. That is roughly one minute per question. If you are struggling on a question and spending three minutes, you are behind. The guides do not really address this because they assume you will practice under timed conditions, but if you are reading passively without timing yourself, you will be surprised on exam day. Set a timer. Do practice tests under actual exam conditions. Core 1 is 65 questions, Core 2 is 90 questions. The official guide from CompTIA has some practice questions in the back but the separate question banks give you more volume. Aim for at least two hundred practice questions per exam before you sit for it. Below that number and you are mostly guessing at your readiness level. There is also the issue of when to retake if you fail. You have to wait fourteen days before you can retake any exam. That is a hard rule and it applies even if you fail on your first try. Plan your schedule accordingly. If you fail Core 1, do not immediately try to push through Core 2 hoping it will compensate. Both exams have separate passing scores and you must pass both. Some people think passing one makes up for failing the other. It does not.
A final note about the security section in Core 2. It is surprisingly heavy. Social engineering, physical security, wireless security protocols, malware types, and attack vectors all come up. The guide usually groups this into one chapter but expect maybe eighteen to twenty-five questions on security topics alone across both exams. Do not skip that chapter just because it feels less technical than the hardware sections. It is one of the easier areas to score well in if you memorize the key terms and protocols.
