How to Pass CompTIA A+ (220-1201 & 220-1202): Complete Study Guide

The CompTIA A+ certification is the industry standard for launching an IT career. Recognized globally by employers from Fortune 500s to local MSPs, it validates the foundational skills every IT support professional needs. Whether you're changing careers, starting fresh, or just want to formalize what you already know, passing the A+ opens the door to roles like help desk technician, field service technician, and IT support specialist.

Here's the thing — CompTIA A+ isn't a single test. You need to pass two exams: Core 1 (220-1201) and Core 2 (220-1202). Each covers distinct domains, and they're designed to be taken in order. Let's break down exactly what's on each exam, how to study effectively, and how to set yourself up for a pass on the first try.

Exam Breakdown: Core 1 (220-1201)

Core 1 focuses on hardware, networking, mobile devices, and troubleshooting hardware. It's the more "hands-on" of the two exams.

Domain	Weight
Mobile Devices	15%
Networking	20%
Hardware	25%
Virtualization and Cloud Computing	11%
Hardware and Network Troubleshooting	29%

Key topics to master:

• Mobile Devices: Laptop hardware (RAM, storage, batteries), display types (LCD, OLED, TN, IPS), mobile device connectivity (Bluetooth, NFC, hotspot), and configuring mobile synchronization.
• Networking: Port numbers and their protocols (SSH/22, HTTP/80, HTTPS/443, DNS/53, DHCP/67-68, RDP/3389), TCP vs. UDP, cable types (Cat 5e, Cat 6, Cat 6a, fiber), connectors (RJ45, RJ11, ST, SC, LC), and networking hardware (routers, switches, access points, patch panels). Know your SOHO router configuration inside and out.
• Hardware: CPU socket types, RAM generations (DDR3, DDR4, DDR5), storage form factors (2.5-inch, M.2, NVMe), power supply connectors, printer types (laser, inkjet, thermal, impact), and the laser printing process (processing, charging, exposing, developing, transferring, fusing, cleaning).
• Virtualization and Cloud: IaaS vs. PaaS vs. SaaS, hypervisor types (Type 1/bare-metal like VMware ESXi vs. Type 2/hosted like VirtualBox), virtual machine resource allocation.
• Troubleshooting: The CompTIA A+ troubleshooting methodology — identify the problem, establish a theory of probable cause, test the theory, establish a plan, implement the solution, verify full system functionality, and document. Apply this to hardware issues (no power, no boot, intermittent failures), network problems (no connectivity, slow speeds, IP conflicts), and printer problems (paper jams, ghost images, color quality).

Exam Breakdown: Core 2 (220-1202)

Core 2 shifts focus to operating systems, security, software troubleshooting, and operational procedures.

Domain	Weight
Operating Systems	31%
Security	25%
Software Troubleshooting	22%
Operational Procedures	22%

Key topics to master:

• Operating Systems: Windows editions (Home, Pro, Enterprise, Pro for Workstations), Windows features (BitLocker, Group Policy, EFS, Windows Sandbox), installation methods (clean, upgrade, repair, unattended), command-line tools (ipconfig, ping, tracert, nslookup, diskpart, chkdsk, sfc, DISM), and macOS/Linux fundamentals (file system hierarchy, permissions, package managers).
• Security: Malware types (virus, worm, trojan, ransomware, spyware, rootkit), social engineering (phishing, spear-phishing, vishing, tailgating), authentication methods (MFA, biometrics, smart cards), and physical security (locks, badges, security cameras).
• Software Troubleshooting: Windows boot issues (BSOD, boot loop, black screen), application problems (crash on launch, compatibility mode, "this app has been blocked for your protection"), and malware removal (quarantine, scan, remediate, educate).
• Operational Procedures: Data handling and disposal (shredding, wiping, degaussing), environmental controls (HVAC, UPS, surge protection), change management, backup methods (full, incremental, differential), and proper documentation.

The 8-12 Week Study Plan

A realistic A+ study timeline is 8 to 12 weeks of consistent work. Here's how to structure it:

Weeks 1-4: Core 1 Foundation

Spend the first month on Core 1 material. Read through the official CompTIA objectives, watch video courses from Messer or Meyers, and take notes on hardware specs, pin layouts, port numbers, and the troubleshooting methodology. Don't just passively watch — pause and quiz yourself on connector types and cable speeds.

Weeks 4-5: Core 1 Practice + Lab

Start running practice questions. This is where most students discover what they actually know versus what they think they know. Take our CompTIA A+ practice test to gauge your readiness. Set up a home lab if you can — an old desktop or laptop to disassemble and reassemble, a router to configure, and a VM hypervisor to play with. Hands-on muscle memory beats flashcards for hardware topics.

Week 6: Take Core 1

When you're consistently scoring 85%+ on practice exams, schedule your Core 1. Take it, pass it, then take the rest of the day off.

Weeks 7-10: Core 2 Foundation

Now tackle the software side. Windows configuration, security threats, command-line tools, and operational procedures. The command line is a heavy focus here — actually open cmd and PowerShell and practice the commands.

Weeks 10-11: Core 2 Practice + Lab

Hit the practice tests again. Focus on the security scenarios and the troubleshooting procedures. For operational procedures, think in terms of real-world scenarios: "Your company has a data retention policy that requires 7 years of records. What backup strategy do you recommend?"

Week 12: Take Core 2

Score 85%+ consistently on Core 2 practice exams? Book it. You're ready.

Best Study Resources

Resource	Why It Works
Professor Messer (YouTube)	Free, comprehensive, follows the exam objectives exactly
Mike Meyers (Udemy/books)	Engaging, practical, great for visual learners
Certeli Practice Tests	Exam-style questions with detailed explanations
Jason Dion (Udemy)	Harder-than-real-exam practice tests — excellent prep
CompTIA Official Objectives PDF	The literal exam blueprint — print it, check off topics
Crucial Exams (Web app)	Free practice questions, PBQ simulators

220-1201 Exam Prep: Tips That Actually Work

• Memorize port numbers by category: Storage (iSCSI/3260, Fibre Channel/4430), Web (HTTP/80, HTTPS/443, proxy/3128), and Legacy (FTP/20-21, Telnet/23, SNMP/161). Grouping beats rote lists.
• Learn the laser printer process as a story: Charge the drum → write the image → apply toner → transfer to paper → fuse with heat → clean the drum. Each step has a failure pattern.
• Know your RAM: DDR3 (240-pin DIMM, 204-pin SODIMM, 1066-1600 MHz), DDR4 (288-pin DIMM, 260-pin SODIMM, 2133-3200 MHz), DDR5 (same pin counts, 4800+ MHz). Never install mismatched generations.
• Wireless standards table: 802.11a (5 GHz, 54 Mbps), 802.11b (2.4 GHz, 11 Mbps), 802.11g (2.4 GHz, 54 Mbps), 802.11n (2.4/5 GHz, 600 Mbps), 802.11ac (5 GHz, 1.3+ Gbps), 802.11ax/Wi-Fi 6 (2.4/5/6 GHz, 9.6 Gbps).

Common Pitfalls and How to Avoid Them

❌ "I'll just memorize the acronyms." ✅ The exam tests scenarios, not definitions. You need to know why DHCP fails when the scope is exhausted, not just what DHCP stands for.

❌ "I don't need hands-on practice." ✅ The A+ includes Performance-Based Questions (PBQs) where you simulate real tasks — building a PC, configuring a SOHO router, or running command-line tools. You can't bluff through these.

❌ "I studied Core 1 for a month, so Core 2 will be similar." ✅ Core 2 is a different beast. Software, security, and operational procedures require a different kind of studying. Don't assume you can cram it in two weeks.

Ready to Pass?

The CompTIA A+ is the most respected entry-level IT certification for a reason — it proves you understand the full stack from hardware to security to operating systems. An 8-12 week study commitment, the right resources, and consistent practice tests are all you need to earn this credential and start your IT career.

Get started with our CompTIA A+ practice test to see where you stand today.