The CompTIA A+ certification is the most recognized entry-level IT credential in the world. Whether you're launching a career in IT support, desktop support, or technical troubleshooting, the A+ certification proves you have the foundational knowledge employers demand. But here's the thing: passing A+ requires understanding both breadth and depth across hardware, networking, operating systems, and security—across not one, but two separate exams.
This guide walks you through everything you need to know to pass both Core 1 (220-1101) and Core 2 (220-1102) exams in 2026, including what to study, how to study effectively, timelines, and the hands-on strategies that actually work.
Understanding the CompTIA A+ Certification Structure
The modern CompTIA A+ certification is not a single exam—it's a two-part certification requiring you to pass both Core 1 and Core 2. You must score at least 675/900 on Core 1 and 700/900 on Core 2 to earn your A+ credential.
Core 1 (220-1101) Exam Details
- 90 questions total (80 multiple choice + 10 performance-based questions)
- 90 minutes to complete
- Passing score: 675/900 (approximately 75%)
- Focus: Hardware and foundational concepts
Core 2 (220-1102) Exam Details
- 90 questions total (80 multiple choice + 10 performance-based questions)
- 90 minutes to complete
- Passing score: 700/900 (approximately 78%)
- Focus: Operating systems, security, and troubleshooting
Both exams include performance-based questions (PBQs)—scenario-based challenges where you solve real problems rather than just selecting answers. These are often the most difficult questions on the exam, but they're also the most representative of actual IT work.
Core 1 Domains: Hardware and Foundational Knowledge
Core 1 tests your understanding of computer hardware, mobile devices, networking basics, and troubleshooting methodology. Here are the five domains with their weight in the exam:
1. Mobile Devices (15%)
You'll face questions about:
- Smartphone and tablet hardware components
- Operating systems (iOS, Android, Windows Mobile)
- Mobile device management (MDM)
- Configuration and deployment
- Security features (biometric authentication, encryption)
Study focus: Mobile OS differences, MDM concepts, and how mobile devices connect to networks.
2. Networking (20%)
This domain covers the networking fundamentals that support modern IT:
- OSI model layers 1-4
- TCP/IP protocol suite (TCP, UDP, ICMP)
- Common ports (80, 443, 21, 22, 23, 53, 67, 68, 110, 143, 389, 445)
- Wireless standards (802.11a/b/g/n/ac/ax)
- Network types (LAN, WAN, MAN, PAN)
- Network infrastructure (routers, switches, firewalls)
Study focus: Memorize the common ports and their protocols. Understand the difference between TCP and UDP. Know wireless standards by generation.
3. Hardware (25%)
The largest domain in Core 1, covering:
- CPU types and sockets (Intel, AMD, form factors)
- RAM types (DDR4, DDR5, SODIMM, UDIMM)
- Storage drives (HDD vs. SSD, NVMe, form factors)
- Motherboards, BIOS/UEFI, firmware
- Power supplies and cooling systems
- Peripheral devices and ports (USB, Thunderbolt, DisplayPort)
- Printer types and troubleshooting
Study focus: RAM specifications (speeds, types, capacities), SSD vs. HDD trade-offs, motherboard components, and printer fundamentals. Printer questions are heavily weighted and often trip up candidates—don't skip them.
4. Virtualization and Cloud Computing (11%)
- Virtual machine (VM) concepts
- Hypervisors (Type 1, Type 2)
- Cloud service models (IaaS, PaaS, SaaS)
- Cloud deployment models (public, private, hybrid)
- Containerization basics
Study focus: Understand the difference between IaaS, PaaS, and SaaS. Know what a hypervisor does and the two main types.
5. Hardware and Network Troubleshooting (29%)
This domain tests your ability to diagnose and fix problems:
- Troubleshooting methodology (identify problem, establish timeline, determine changes, implement solution, test, document)
- Common hardware failures and symptoms
- Network connectivity troubleshooting
- Post-incident documentation
Study focus: Master the CompTIA troubleshooting methodology. This framework appears across both A+ exams and every CompTIA certification—learn it early and apply it to every scenario.
Core 2 Domains: OS and Operational Excellence
Core 2 shifts focus to the software side of IT support: operating systems, security, and operational procedures. This exam is harder than Core 1 (700/900 vs. 675/900), so plan accordingly.
1. Operating Systems (31%)
The largest Core 2 domain, covering:
- Windows versions (Windows 10, Windows 11, Windows Server basics)
- macOS fundamentals
- Linux distributions and command line
- User and group management
- File systems (NTFS, ext4, APFS)
- Windows updates and patch management
- Installation, configuration, and upgrade procedures
Study focus: Windows command line (ipconfig, ping, tracert, netstat, nslookup). Basic Linux commands (ls, cd, grep, chmod, sudo). macOS file structure and defaults command.
2. Security (25%)
Security knowledge is critical for any support role:
- Physical security measures
- Logical access controls (authentication, authorization)
- Malware types (viruses, worms, trojans, ransomware, spyware)
- Social engineering attacks
- Password policies and encryption
- Wireless security (WEP, WPA, WPA2, WPA3)
- BYOD (Bring Your Own Device) policies
- Data destruction methods
Study focus: Malware types and what each does. Wireless security evolution from WEP to WPA3. Difference between authentication and authorization.
3. Software Troubleshooting (22%)
- Common OS issues and resolution
- Application troubleshooting
- Windows-specific tools (Task Manager, Event Viewer, Device Manager, Services, MSConfig)
- Performance monitoring
- Log analysis
- Dependency issues and conflicts
Study focus: Windows built-in troubleshooting tools and what they show. How to use Event Viewer to diagnose problems. Process Management concepts.
4. Operational Procedures (22%)
Real-world IT practices:
- Change management procedures
- Documentation requirements
- Disaster recovery and business continuity
- Environmental controls (temperature, humidity)
- Backup and restore procedures
- Incident response
- Professionalism and communication
Study focus: Change management process and why it matters. Documentation standards. When to escalate issues.
Which Exam Should You Take First?
Take Core 1 first. Here's why:
Foundation building: Core 1 is hardware-focused and more visual/tangible. Once you understand how computers work physically, the software concepts in Core 2 make much more sense.
Lower passing score: Core 1 requires 675/900 vs. 700/900 for Core 2. Starting with the "easier" exam builds confidence.
Prerequisite knowledge: Understanding hardware, networking, and the troubleshooting methodology gives you the foundation to tackle operating systems and security effectively.
Exam order advantage: CompTIA reports that candidates who pass Core 1 first have higher pass rates on Core 2.
Once you've passed Core 1 and earned your Core 1-only credential (which is valid but less valuable), take Core 2 within 4-8 weeks while the knowledge is fresh.
The Ideal Study Timeline
Total study duration: 8-12 weeks
- Core 1 preparation: 4-6 weeks
- Core 1 exam
- Core 2 preparation: 4-6 weeks
- Core 2 exam
Time commitment: 10-15 hours per week
This breaks down as:
- Weeks 1-2: Structured materials (textbook or study course) for foundational understanding
- Weeks 3-4: Deep dive into practice questions, identifying weak areas
- Week 5: Targeted review of weak domains, more PBQ practice
- Week 6: Final review, flashcards, and practice exams under timed conditions
- Week 7: Exam day
This timeline assumes you're studying consistently and not juggling a full-time IT job. If you're already working in IT support, add 2-4 weeks to your timeline—you'll have real-world context, but study fatigue is real.
The Most Effective Study Approach
Here's what actually works for A+ certification:
Phase 1: Build Foundation (Weeks 1-2)
Start with structured study materials. Your options:
- Wiley CompTIA A+ textbooks (industry-standard, comprehensive)
- Video courses (CompTIA CertMaster, Professor Messer, Jason Dion)
- Combined approach (textbook for reference, videos for explanation)
Read actively. Take notes. Don't just consume material—write down key concepts in your own words. When you encounter a new topic (like RAM types), pause and explain it out loud to yourself.
Phase 2: Test Yourself Constantly (Weeks 3-5)
This is where learning actually happens. Move to practice questions immediately—don't try to finish all study materials first.
- Use a practice question bank (LearnZapp's 10,524+ practice questions, Wiley's official exams, Kaplan, Dion)
- Take 25-50 questions daily, focusing on one domain at a time
- Review every incorrect answer. Don't just look at the right answer—understand why it's right and why alternatives are wrong
- Track which domains are weakest; spend extra time there
Phase 3: Flashcard Speed Review (Week 5-6)
Flashcards for terminology and quick recall:
- CompTIA port numbers (create a deck of all 20+ ports with their protocols and purposes)
- Printer types and troubleshooting (dot matrix, inkjet, laser)
- Wireless standards progression
- RAM types and speeds
- Linux command basics
Use Quizlet, Anki, or even handwritten cards. Review for 15-30 minutes daily.
Phase 4: Full Practice Exams (Week 6)
Take full-length, timed practice exams under test conditions:
- 90 minutes, no interruptions, no notes
- Same environment as your actual exam (quiet room, minimal distractions)
- Take at least 2-3 full practice exams
- Review performance, not just pass/fail
This is where you discover time management issues and build test-taking stamina.
The Topics That Trip Everyone Up
Printer Troubleshooting
Everyone dreads printer questions, but they're heavily weighted in Core 1. Master these:
- Dot matrix: Impact printer, pin-based, carbon paper
- Inkjet: Spray-based, color-capable, low-cost
- Laser: Toner-based, high-volume, professional
- Thermal: No ink, receipt/label printing
- 3D printers: FDM, filament, resolution concepts
Common troubleshooting: paper jams, toner cartridge issues, driver problems, connectivity (USB, network, Bluetooth).
Linux Command Line
Linux commands appear heavily in Core 2. Master these essential commands:
ls(list files)cd(change directory)pwd(print working directory)chmod(change permissions)sudo(elevate privileges)grep(search text)cat(display file contents)rm(remove files)
Understand permission notation (755, 644) and the concept of su vs. sudo.
Networking Ports
You must memorize common ports and their protocols:
- HTTP: 80
- HTTPS: 443
- FTP: 21
- SSH: 22
- Telnet: 23
- DNS: 53
- DHCP: 67/68
- POP3: 110
- IMAP: 143
- LDAP: 389
- SMB: 445
Create mnemonics or flashcards. This will be tested.
Mobile Device Management
MDM concepts confuse many candidates. Understand:
- BYOD vs. corporate devices: Different policies and risks
- MDM features: App management, device location, remote wipe
- Containerization: Separating work and personal data on one device
- Enrollment: Devices must be enrolled in the MDM system
Cloud Concepts
Simple but easily confused:
- IaaS (Infrastructure as a Service): You get virtual servers and infrastructure. You manage OS, applications, data. Examples: AWS EC2, Azure VMs.
- PaaS (Platform as a Service): You get development environment and tools. You manage code and data. Examples: Heroku, Azure App Service.
- SaaS (Software as a Service): You get software accessed via browser. Everything else is managed. Examples: Office 365, Salesforce, Google Workspace.
Remember: more responsibility = lower level of service (IaaS > PaaS > SaaS in terms of your responsibilities).
Hands-On Practice: The Secret Weapon
Hands-on experience separates passing candidates from failing ones. If possible:
For Core 1:
- Open a computer case (safely, after powering down). Identify components: RAM, CPU, motherboard, storage drives.
- Replace or upgrade RAM. Install new RAM sticks, boot the system, verify in BIOS and Windows.
- Replace a hard drive. Physical experience with HDD/SSD installation cements understanding.
- Check BIOS settings. Navigate BIOS/UEFI, view boot order, identify hardware information.
- Work with cables and connections. Practice identifying USB, DisplayPort, HDMI, Thunderbolt, and legacy connectors.
For Core 2:
- Spin up virtual machines. Use VirtualBox or VMware to create Windows and Linux VMs.
- Practice Windows command line. Open Command Prompt or PowerShell and run commands: ipconfig, ping, tracert, netstat, nslookup.
- Practice Linux commands. Use a Linux VM or WSL (Windows Subsystem for Linux) to practice ls, cd, chmod, sudo, grep.
- Explore Windows utilities. Open Task Manager, Device Manager, Event Viewer, Services, and MSConfig. See what's running and how to manage it.
- Configure user accounts. Create local and administrator accounts. Experiment with group policies (if available).
Hands-on experience transforms abstract concepts into concrete understanding. You'll remember installing RAM far better than reading about DDR4 specifications.
Recommended Study Resources
Primary Study Materials
- Wiley CompTIA A+ textbooks (Core 1 and Core 2 versions) – comprehensive, exam-aligned
- Professor Messer free YouTube videos – excellent explanations, well-organized by domain
- CompTIA CertMaster (paid) – interactive training directly from CompTIA
Practice Question Banks
- LearnZapp CompTIA A+ (/apps/comptia/) – 10,524+ questions, Wiley-sourced, with detailed explanations
- CompTIA Official Practice Tests – most exam-realistic
- Kaplan/Dion practice exams – quality questions with good explanations
Supplemental Resources
- Flashcards: Quizlet A+ decks or Anki for spaced repetition
- Hands-on labs: Linux command practice environments, virtual lab platforms
- CompTIA A+ exam objectives (free PDF from CompTIA website) – bookmark this and reference frequently
Test-Taking Strategies That Work
Managing Performance-Based Questions (PBQs)
PBQs are scenario-based, hands-on questions that test real-world troubleshooting. Strategy:
- Read the scenario carefully. Understand the problem before diving into the simulation.
- Create a mental plan. What are you trying to accomplish?
- If stuck, move on. PBQs are worth the same as multiple-choice questions. Don't waste 15 minutes on one PBQ.
- Return to difficult PBQs last. Use your remaining time to revisit them after completing multiple-choice questions.
Time Management
- 90 minutes for 90 questions = 60 seconds per question average
- Budget 1-1.5 minutes per multiple-choice question, 2-3 minutes per PBQ
- If you're running out of time, skip PBQs and come back to them
Process of Elimination
- Even if you don't know the answer, eliminate obviously wrong options
- Look for patterns: if option A mentions wrong hardware specs, eliminate it
- Watch for absolutes ("always," "never") which are often incorrect
- Read all options before answering
Last-Minute Strategy
In the final weeks before your exam:
- Review weak domains again
- Take at least 2-3 full practice exams under timed conditions
- Get adequate sleep the night before (8+ hours)
- Arrive early to your exam center and acclimate
- Have a light meal 1-2 hours before (no caffeine overload)
After You Pass A+: What's Next?
Congratulations—you've earned your A+ certification and proven you have foundational IT knowledge. What now?
The CompTIA Trifecta Path
Most IT professionals continue on to earn:
- CompTIA Network+ (networking specialist)
- CompTIA Security+ (security-focused roles)
This three-cert combination (A+, Network+, Security+) is the gold standard for IT career progression and opens doors to security clearance jobs and higher-paying positions.
Specialization Routes
- Cloud certifications: AWS Solutions Architect, Azure Administrator
- Vendor certifications: Microsoft certifications (MCSA), Cisco CCNA
- Specialized certifications: Server administration, cybersecurity, networking
A+ is your foundation. Choose your next path based on your career goals.
Final Thoughts: You've Got This
The CompTIA A+ certification is achievable. It's not the hardest IT certification out there—it's designed to prove foundational knowledge, not make you an expert. What separates passing candidates from failing ones isn't intelligence; it's disciplined, consistent studying over 8-12 weeks.
Follow this guide:
- Study Core 1 first (4-6 weeks)
- Spend at least 70% of study time on practice questions
- Get hands-on experience with hardware and software
- Master the topics everyone skips (printers, Linux commands, networking ports)
- Take full practice exams under timed conditions
- Trust your preparation and manage test anxiety
You're already taking the right step by reading this comprehensive guide. Now, take action.
Ready to start your A+ journey? Take a free CompTIA A+ diagnostic test — no signup required to assess your current knowledge and identify areas to focus on. LearnZapp's AI-powered learning platform gives you personalized study recommendations based on your diagnostic results, so you can study smarter, not harder.
Your IT career starts here.