CompTIA A+ Core 1 Study Guide: Everything You Need to Pass the 220-1101 Exam

The CompTIA A+ Core 1 certification validates your expertise and opens doors to higher-paying roles in IT and cybersecurity. Whether you are just starting your study journey or doing a final review, this guide breaks down everything you need to know to pass the 220-1101 exam.

Exam Overview

• Certification: CompTIA A+ Core 1
• Exam Code: 220-1101
• Vendor: CompTIA
• Cost: $358 USD
• Duration: 90 minutes
• Questions: Up to 90 questions
• Passing Score: 675 out of 900
• Format: Multiple choice + Performance-based questions (PBQs)
• Prerequisites: None required

Domain Breakdown

Understanding the exam domains and their weights is critical for efficient study planning. Focus more time on heavily-weighted domains while ensuring you cover all areas.

Domain 1: Mobile Devices (13%)

• 1.1 Given a scenario, install and configure mobile device hardware and components
• 1.2 Compare and contrast accessories and connectivity options for mobile devices
• 1.3 Given a scenario, configure basic mobile device network connectivity and application support
• 1.4 Compare and contrast mobile device management concepts

Key concepts: LCD vs OLED Displays, Touch Screen Digitizers, Mobile Device Accessories, NFC and Bluetooth, GPS and Cellular, Mobile Device Ports, Wearable Technology, Device Disassembly

Domain 2: Networking (23%)

• 2.1 Compare and contrast TCP and UDP ports, protocols, and purposes
• 2.2 Compare and contrast common networking hardware
• 2.3 Explain wireless networking protocols and configurations
• 2.4 Given a scenario, configure SOHO network settings

Key concepts: TCP vs UDP, IPv4 vs IPv6, DNS and DHCP, SOHO Router Configuration, Wireless Standards (Wi-Fi 6), Network Cable Types, Subnet Masks, Default Gateway

Domain 3: Hardware (25%)

• 3.1 Explain basic cable types and their connectors, features, and purposes
• 3.2 Given a scenario, install and configure appropriate RAM
• 3.3 Given a scenario, select and install appropriate storage devices
• 3.4 Given a scenario, install and configure motherboards, CPUs, and add-on cards

Key concepts: Motherboard Form Factors, CPU Architecture, RAM Types (DDR4/DDR5), SSD vs HDD, RAID Levels (0, 1, 5, 10), Power Supply Units, Peripheral Connectors, BIOS vs UEFI

Domain 4: Virtualization and Cloud Computing (11%)

• 4.1 Summarize cloud computing concepts
• 4.2 Compare and contrast cloud service models (IaaS, PaaS, SaaS)
• 4.3 Summarize virtualization concepts and client-side virtualization

Key concepts: IaaS vs PaaS vs SaaS, Hypervisor Types (1 and 2), Virtual Machine Setup, Cloud Deployment Models, Shared Resources, Rapid Elasticity, Metered Services, Sandbox Testing

Domain 5: Hardware and Network Troubleshooting (28%)

• 5.1 Given a scenario, apply the troubleshooting methodology
• 5.2 Given a scenario, troubleshoot motherboards, RAM, CPU, and power issues
• 5.3 Given a scenario, troubleshoot storage devices and RAID arrays
• 5.4 Given a scenario, troubleshoot video, projector, and display issues
• 5.5 Given a scenario, troubleshoot common network connectivity issues

Key concepts: CompTIA Troubleshooting Methodology, POST and Boot Errors, Blue Screen of Death, Overheating Symptoms, Network Connectivity Issues, Display Problems, Storage Failure Signs, Power Issues

Recommended Study Timeline

Plan for approximately 6-10 weeks of dedicated study. Here is a suggested weekly breakdown:

• Week 1: Domain 1: Mobile Devices — LCD types, OLED, digitizers, device teardown
• Week 2: Domain 2: Networking Fundamentals — TCP/IP, OSI model, Ports, Protocols
• Week 3: Domain 2: Wireless & SOHO — Wi-Fi standards, Router config, IP addressing
• Week 4: Domain 3: Hardware — Motherboards, CPUs, RAM types, Form factors
• Week 5: Domain 3: Storage & Peripherals — SSDs, HDDs, RAID, Printers, Display tech
• Week 6: Domain 4: Virtualization & Cloud — IaaS, PaaS, SaaS, VMs, Hypervisors
• Week 7: Domain 5: Troubleshooting Methodology — CompTIA 7-step process, Hardware issues
• Week 8: Full Review: Practice tests, PBQ practice, Weak areas, Exam logistics

Top Study Tips

1. Start with the official exam objectives. Download them from the CompTIA website and use them as your study checklist. Every exam question maps to a specific objective.

1. Use active recall over passive reading. Instead of re-reading notes, test yourself with practice questions after each study session. This dramatically improves retention.

1. Focus on heavily-weighted domains first. Domains with higher percentages appear more on the exam. Master these before moving to lower-weighted areas.

1. Build hands-on experience. Set up a lab environment and practice the skills you are studying. Hands-on experience is especially valuable for performance-based questions.

1. Take practice exams under real conditions. Time yourself, eliminate distractions, and simulate the exam environment. Review every wrong answer and understand why it was wrong.

Practice Resources

Test your knowledge with our free tools:

Take our free CompTIA A+ Core 1 practice quiz

View the full CompTIA A+ Core 1 certification page

• CVSS Calculator — Practice scoring vulnerabilities
• Password Strength Checker — Test password security

Career Impact

The CompTIA A+ Core 1 certification demonstrates validated expertise to employers. Certified professionals typically see:

• Higher starting salaries compared to non-certified peers
• More interview callbacks as the certification signals commitment and competence
• Faster career progression with a recognized credential on your resume
• Access to roles that specifically require or prefer CompTIA A+ Core 1 certification

What to Study Next

After earning your CompTIA A+ Core 1 certification, consider these natural next steps:

• Deepen your specialization with an advanced certification in the same vendor track
• Broaden your skills with a certification from a complementary domain
• Visit our Career Paths page for detailed certification roadmaps

Get Organized with a Study Planner

A structured study plan makes the difference between passing and failing. Our fillable PDF study planners include domain trackers, weekly schedules, and progress tracking designed specifically for CompTIA A+ Core 1 exam prep.

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This guide is independently created for educational purposes. CompTIA trademarks belong to their respective owners. FixTheVuln is not affiliated with or endorsed by CompTIA.