220-1101 Study Guide — How to Pass A+

A+ Hardware

The A+ certification is where IT careers begin, but that does not mean the exam is easy.

A+ OS and Software

Core 2 (220-1102) shifts from physical hardware to software, operating systems, and security.

Mobile Device Types

The CompTIA A+ 220-1101 exam begins with mobile devices — you must identify device types, understand their hardware characteristics, and know how they connect to enterprise environments.

Laptop Components

Laptop components are a major focus of the CompTIA A+ 220-1101 exam.

Mobile Connectivity

Mobile device connectivity covers the wireless and wired technologies that allow smartphones, tablets, and laptops to communicate.

Mobile Device Sync

Mobile device synchronization keeps data consistent across devices and cloud services.

Mobile Device Security

Mobile device security protects smartphones and tablets from unauthorized access and data loss.

Networking Concepts

Networking concepts for the CompTIA A+ 220-1101 exam cover the foundational knowledge technicians need to configure, connect, and troubleshoot networks for end users.

Network Hardware

Network hardware knowledge is required for CompTIA A+ 220-1101 — technicians must identify and understand routers, switches, access points, modems, firewalls, and other devices used in home and small business networks.

Wireless Networking

Wireless networking is one of the most tested topics in CompTIA A+ 220-1101.

Cables & Connectors

Network cables and connectors are foundational physical layer knowledge for CompTIA A+ 220-1101.

Internet Connection Types

Understanding internet connection types is required for CompTIA A+ 220-1101.

Network Configuration

Network configuration is a daily task for A+ technicians — configuring IP addresses, DNS settings, and proxy settings on Windows, macOS, and mobile devices.

Motherboard Components

The motherboard is the central circuit board that connects all PC components.

CPU Concepts

The CPU (Central Processing Unit) is the primary processor that executes instructions.

RAM Types

RAM (Random Access Memory) is volatile system memory that the CPU uses for active processes.

Storage Devices

Storage devices hold operating systems, applications, and user data.

Power Supplies

The power supply unit (PSU) converts AC power from the wall outlet to DC power required by PC components.

Display Technologies

Display technologies are tested in CompTIA A+ 220-1101 for both desktop monitors and laptop displays.

Printers

Printers are a significant topic in CompTIA A+ 220-1101 and 220-1102 — the exam covers laser, inkjet, thermal, and impact printer technologies in detail, plus installation, sharing, and troubleshooting.

BIOS / UEFI

BIOS and UEFI are firmware interfaces that initialize hardware and launch the operating system.

Virtualization

Virtualization allows multiple operating systems to run simultaneously on a single physical machine.

Cloud Computing

Cloud computing delivers computing resources — servers, storage, databases, networking, software — over the internet on a pay-as-you-go basis.

Cloud Storage

Cloud storage delivers on-demand storage capacity over the internet.

Peripheral Devices

Peripheral devices extend the capabilities of a computer through input, output, and storage expansion.

Expansion Cards

Expansion cards add capabilities to a desktop computer through PCIe or legacy slots.

Troubleshooting Methodology

The CompTIA A+ troubleshooting methodology is a structured 6-step process tested on both 220-1101 and 220-1102 exams.

POST Troubleshooting

POST (Power-On Self Test) failures prevent a computer from booting to the operating system.

Storage Troubleshooting

Storage troubleshooting addresses HDD and SSD failures, missing drive detection, slow performance, and data recovery scenarios.

Power Troubleshooting

Power issues prevent computers from starting or cause random shutdowns and instability.

Printer Troubleshooting

Printer troubleshooting is heavily tested on CompTIA A+ 220-1102.

Mobile Troubleshooting

Mobile device troubleshooting addresses the unique failure modes of smartphones and tablets.

Laptop Troubleshooting

Laptop troubleshooting requires addressing hardware issues unique to the portable form factor — battery, display, keyboard, touchpad, and thermal management.

Network Sharing

Network sharing enables multiple computers to access shared files and printers without transferring files manually or purchasing multiple devices.

Firewall Basics

Firewalls are the primary network security control tested in CompTIA A+ 220-1101.

Network Tools

Network troubleshooting tools are essential for diagnosing connectivity problems.

Display Troubleshooting

Display troubleshooting resolves monitor and display issues in desktops, laptops, and projectors.

Network HW Troubleshooting

Network hardware troubleshooting addresses physical layer and device failures that prevent network connectivity.

Custom PC Configs

Custom PC configurations match hardware components to specific workload requirements.

Driver Management

Device drivers are software that allow the operating system to communicate with hardware.

Windows Editions

Windows editions are a significant topic in CompTIA A+ 220-1102.

Windows Installation

Windows installation is a core CompTIA A+ 220-1102 skill.

User Management

User account management is a core CompTIA A+ 220-1102 skill — creating, modifying, and troubleshooting user accounts in Windows.

Windows File Systems

File systems define how data is stored and organized on storage media.

Windows Command Line

The Windows command line is a critical tool for A+ technicians.

Windows Task Manager

Task Manager is the go-to tool for A+ technicians diagnosing performance issues, killing unresponsive applications, and analyzing resource usage.

Windows Admin Tools

Windows includes dozens of built-in administrative tools that A+ technicians use daily.

Windows Updates

Keeping Windows updated is fundamental to security and stability.

Windows Backup & Restore

Data protection is a critical responsibility for A+ technicians.

macOS Features

CompTIA A+ 220-1102 tests macOS support alongside Windows.

Linux Basics

CompTIA A+ 220-1102 requires basic Linux knowledge for the growing number of Linux-based enterprise and IoT deployments.

Mobile OS

Mobile devices run specialized operating systems with unique security models, app distribution, and management requirements.

Ports & Connectors

Identifying ports and connectors by sight is a foundational A+ skill.

Display Connectors

Display connectors are one of the most commonly tested topics on CompTIA A+ 220-1101.

RAID

RAID (Redundant Array of Independent Disks) combines multiple drives to improve performance, redundancy, or both.

Client Virtualization

Client-side virtualization lets a single physical computer run multiple operating systems simultaneously.

Network Addressing

Understanding IP addressing is essential for configuring and troubleshooting networks.

Windows Registry

The Windows Registry is the centralized configuration database for Windows and installed applications.

Windows Networking

Configuring and troubleshooting Windows networking is a daily task for A+ technicians.

Security Threats

Security threats are a major focus of CompTIA A+ 220-1102.

Malware Removal

CompTIA A+ 220-1102 tests a specific malware removal procedure that every technician must follow.

Windows Security

Windows includes comprehensive built-in security features that A+ technicians must know how to configure.

Account Security

Account security is a foundational skill for A+ technicians.

Physical Security

Physical security prevents unauthorized access to hardware and sensitive areas.

Data Destruction

Proper data destruction is a critical but often overlooked security practice.

Encryption Basics

Encryption is fundamental to modern security.

Wireless Security

Wireless networks are inherently more vulnerable than wired networks due to their broadcast nature.

SOHO Security

Small Office/Home Office (SOHO) networks have unique security challenges.

Workstation Security

Securing individual workstations is a daily responsibility for A+ technicians.

Windows Services

Windows services run in the background to support applications and OS functions.

CPU Performance

CPU performance and cooling are interconnected hardware topics on CompTIA A+ 220-1101.

IoT & Smart Home

IoT (Internet of Things) and smart home technology are increasingly common in homes and businesses.

Browser Security

Web browsers are among the most frequently attacked applications.

Mobile Security

Mobile devices contain sensitive personal and business data and face unique security threats.

Application Troubleshooting

Application errors and crashes are among the most common support calls for A+ technicians.

OS Troubleshooting

Operating system problems range from boot failures to performance degradation.

Malware Troubleshooting

Diagnosing and resolving malware infections requires systematic investigation.

Remote Access Tools

Remote access tools let A+ technicians support users without being physically present.

IT Documentation

Proper documentation enables consistent IT support, faster troubleshooting, and regulatory compliance.

Change Management

Change management prevents unplanned downtime and ensures IT changes are tested, approved, and reversible.

Disaster Recovery

Disaster recovery planning ensures business continuity after catastrophic events.

Environmental Controls

Environmental factors like temperature, humidity, and power quality significantly impact hardware reliability.

Safety Procedures

IT technicians work with electrical equipment and sometimes in physically demanding environments.

Professional Communication

Professional communication and customer service skills are explicitly tested on CompTIA A+ 220-1102.

Scripting Basics

Scripting automates repetitive tasks and increases technician efficiency.

Network Software Troubleshooting

Network and software problems often intersect — a misconfigured DNS affects applications, a proxy blocks downloads, a VPN client causes routing issues.

Mobile App Troubleshooting

Mobile apps crash, slow down, and fail to sync.

Privacy & Licensing

Privacy laws, software licensing, and acceptable use policies govern IT operations.

Incident Response

Incident response provides a structured approach to handling security events.

Printer Installation

Installing and configuring printers is a daily task for A+ technicians.

Multifunction Devices

Multifunction devices (MFDs) combine printing, scanning, copying, and faxing into one unit.

Cloud Synchronization

Cloud sync services keep files, settings, and data consistent across multiple devices.

Cable Management

Proper cable management is essential for airflow, safety, and maintainability in any IT environment.

Accessibility Features

Accessibility features enable users with disabilities to use computers effectively.

Power Management

Power management settings extend battery life and reduce energy consumption.

Display Settings

Configuring display settings for optimal clarity and productivity is a routine A+ task.

Physical Testing Tools

Hardware testing tools help A+ technicians diagnose cable faults, power issues, and connectivity problems.

Network Protocols

A+ technicians must know the protocols and ports used by common network services.

Bluetooth Pairing

Bluetooth is the dominant short-range wireless technology for peripherals and mobile devices.

Virtualization Troubleshooting

Virtualization problems range from VM startup failures to network connectivity issues and resource contention.

Cloud Service Models

Cloud computing transforms how IT services are delivered.