A+ Core 2 (220-1202) Exam Objectives: All Four Domains Broken Down

The efficient way to prepare is to follow the weighting rather than your comfort zone. CompTIA A+ Core 2 (220-1202) tells you exactly where the points are, and this article walks through all four domains, what each covers in practice, and how to prioritize your time.

Core 2 is the software, security, and procedures half of A+. For the hardware half, see the Core 1 domains guide. For the whole path, the complete A+ guide ties it together.

The weighting at a glance

Operating Systems and Security are tied as the largest domains, and together they make up 56% of the exam. In V15, Security grew to 28% — reflecting a stronger security-first emphasis, including zero trust. This is also why many candidates find Core 2 the tougher of the two exams, and why its passing score (700) is set higher than Core 1's.

Domain 1: Operating Systems (28%)

The biggest domain, tied with Security. Windows is the star, but not the whole show.

You'll cover Windows editions and features, command-line tools, the Windows GUI and management utilities (Control Panel, Settings, MMC), OS installations and upgrades in diverse environments, application installation, and configuring cloud-based productivity tools — plus macOS and Linux client basics and mobile OS settings. Command-line proficiency matters: know Windows commands (sfc, DISM, chkdsk, gpupdate, ipconfig, and friends) and basic Linux commands (ls, grep, chmod, and so on). This can't be faked, so practice at a real prompt.

Domain 2: Security (28%)

Tied for the largest domain, and the one that grew in V15. The security domain alone covers more ground than some entire certifications.

Expect security measures and their purposes, Windows OS security settings, wireless security protocols and authentication, malware types and detection/removal/prevention, social engineering and common attacks, SOHO malware remediation, applying security settings on SOHO wired and wireless networks, and browser security configuration. Zero trust is a notable addition. Because this domain is broad and heavily scenario-based, it rewards understanding why a control fits a situation rather than rote memorization alone.

Domain 3: Software Troubleshooting (23%)

Diagnosing and fixing software problems — the daily reality of support work.

You'll troubleshoot common Windows OS issues, mobile OS and application issues, mobile OS and application security issues, and personal computer security issues. The exam loves "a user reports…" scenarios that ask you to read symptoms, identify the cause, choose the correct step, and know which tool to use. Practice the best-practice malware-removal process in order, and get comfortable reading a symptom and reasoning to a fix.

Domain 4: Operational Procedures (21%)

The professionalism-and-process domain — smaller, but genuinely important on the job.

It covers documentation and support best practices, change management, workstation backup and recovery methods (including rotation schemes and the 3-2-1 rule), safety and environmental procedures (ESD, safety data sheets), incident response basics, communication and professionalism, and handling of sensitive data like PII. This domain is more memorization-and-judgment than technical, and it's often where candidates pick up easy points if they don't overlook it.

How to sequence your study

A sensible order: give the most time to Operating Systems and Security since together they're 56% of the exam, then Software Troubleshooting (which builds on both), and finish with Operational Procedures. Practice command-line tools and security scenarios hands-on rather than just reading. The study plan lays this out, and if you're deciding which exam to tackle first, see Core 1 vs Core 2.

Because Core 2 rewards hands-on OS and security practice, a structured course with guided labs is the most efficient path.

Cover every Core 2 objective: CompTIA A+ Core 2 CertMaster Learn (V15, 220-1202). To build hands-on OS and security skills, add the Core 2 CertMaster Lab. As an Authorized CompTIA Partner, these are the official versions.

FAQ

Which Core 2 domain is most important? Operating Systems and Security are tied at 28% each — together 56% of the exam. Give them the most time.

Why did Security get bigger in V15? CompTIA increased the security emphasis to reflect modern "security-first" IT, including zero trust. That's part of why Core 2's passing score is higher.

Do I need to know command-line tools? Yes. Core 2 expects Windows commands (sfc, DISM, chkdsk, gpupdate, etc.) and basic Linux commands. Practice them at a real prompt.

Is Core 2 harder than Core 1? Many candidates think so, due to the heavy security and command-line content and the higher passing score (700 vs 675).

Is Operational Procedures worth studying at 21%? Yes. It's often a source of accessible points, covering documentation, change management, backup, safety, and professionalism.