What You Actually Need for the 220-1102 Exam
The 220-1102 exam is the second part of the CompTIA A+ certification. It covers advanced topics like mobile devices, networking, hardware diagnostics, and operational procedures. The study guide you use matters more than most people admit, because the exam itself is oddly specific about things most textbooks gloss over. I've worked through several study guides over the years, and most of them are basically the same content repackaged. The Sybex study guide for 220-1102 remains one of the more useful ones, but it won't save you if you haven't put in hands-on time. The exam doesn't care that you can define VLANs. It wants to know which one you'd choose for a specific network topology at a specific site. The official CompTIA study guide from Sybex (ISBN 978-1-119-88631-6) is probably the most reliable single source. You can find it on Amazon, or grab the digital version directly from Sybex's website. For free materials, CompTIA publishes a detailed objective breakdown on their website, and the Professor Messer video course covers every single objective with decent depth. Those are solid starting points before you buy anything.
How the Exam Actually Works
The 220-1102 is 90 questions, 45 minutes. That means roughly 30 seconds per question. Some are performance-based, which CompTIA marks separately so you know ahead of time. The PBQs are where most people bleed time. You might get a drag-and-drop that asks you to map cables to ports, or configure a wireless access point settings panel. They look intimidating but they're usually straightforward if you've actually done the work. Here's something CompTIA doesn't emphasize enough: the exam loves scenario-based questions. You'll read a paragraph about a user's problem and then pick the best next step. The trick is that two answers might be technically correct, but only one is what CompTIA wants. Usually it's the least invasive action first, or the one that follows the CompTIA troubleshooting methodology exactly. I learned this the hard way on my first attempt. I spent three weeks studying using flashcards and practice tests, felt confident, and scored 685 out of 900. I failed by 50 points. I looked back at the questions I missed, and they were almost all scenario questions where I picked the technically correct answer instead of the process-correct one. The workaround was simple. I stopped doing practice questions cold and started reading every single explanation, even the ones I got right. I wrote down why the wrong answers were wrong. That habit alone pushed my practice scores from the low 700s to the high 800s over two weeks. I passed on my second attempt with a 798.
Topics That Are Tricky
Mobile device troubleshooting comes up constantly. Not just "what is an iOS vs Android issue," but specifics like recognizing that a phone not charging could be a faulty charging port, a bad battery, or a software glitch in the power management IC. The exam expects you to know the diagnostic sequence: check the cable, check the port, check the battery health, then look at software settings. Skip steps and you'll pick the wrong answer. Network protocols are another area where people lose points. You need to know the difference between FTPS, SFTP, and SCP well enough to pick the right one for a given security requirement. FTPS adds SSL/TLS to standard FTP. SFTP runs over SSH. SCP is also SSH-based but older and more limited. When the question mentions key-based authentication or secure file transfer over an existing SSH session, SCP or SFTP is your answer. Don't overthink it. Just know the distinction and move on. Hardware diagnostics and RAID levels also show up. RAID 1, 5, 10 — you need to know capacity, fault tolerance, and minimum drives for each without looking it up. The exam gives you no reference sheet for calculations. If they ask how much usable space a three-disk RAID 5 array gives you with 2TB drives each, the answer is 4TB. No debate. Be comfortable with these numbers before test day.
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Operational Procedures
This section gets ignored by most people studying for 220-1102, and that's a mistake. It covers safe handling practices, environmental concerns, communication protocols, and professionalism. Things like proper ESD wrist strap usage, how to dispose of lithium-ion batteries, and the correct way to communicate a security breach. It sounds lightweight but it consistently accounts for roughly 10 to 12 percent of the exam. I once saw a question asking which procedure to follow when transporting a laptop with a suspected cracked screen — the answer involved powering it down, removing the battery if possible, and wrapping it in anti-static material. Not the most obvious answer if you've only studied the technical topics. Professor Messer's videos are free and thorough. Go through them in order. Take notes. The accompanying PDF outline maps directly to the exam objectives, so you can verify you've covered everything. Jason Dion's practice exams on Udemy are worth the money. They're closer to the actual exam in difficulty and style than the Sybex practice questions. His explanations are detailed enough that you learn from wrong answers instead of just moving past them. Get his discount when it's available, usually around 85 to 90 percent off.
Hands-on time is non-negotiable. You should be able to disassemble and reassemble a laptop, terminate an RJ45 connector, configure a SOHO router, and troubleshoot a network connectivity issue without looking up instructions. If you can't do these things, no amount of reading will fill the gap. CompTIA builds questions around practical scenarios because they expect certified technicians to actually perform these tasks.
The Downsides
Let me be straight about what study guides don't do well. They're slow to update when CompTIA changes objectives. The 220-1102 objectives were updated in 2023, and some study guides published in late 2022 still cover 220-1101 topics that have been removed. Always cross-reference with the official CompTIA objective sheet before committing to a book. The PDF on CompTIA's site is the source of truth. Everything else is a secondary interpretation. Flashcards have limited value for this exam. You can memorize that HTTP uses port 80 and HTTPS uses port 443 all day, but the exam will bury that fact inside a scenario about a web server being unreachable through a firewall. You need to apply the knowledge, not just recall it. Use flashcards for pure memorization items like ports and RAID specs, but rely on practice questions and hands-on labs for everything else. If you're short on time and can only do one thing, do practice questions under timed conditions. The 45-minute limit for 90 questions is brutal, and most people who fail do so because they run out of time on the PBQs, not because they don't know the material. Set a timer, do a full practice exam, and review every single answer afterward. That's the single most effective study method I've found, and it's been consistent across every version of the A+ exam.
