CompTIA A+ Core 1 vs Core 2: What's the Difference?

CompTIA A+ is the most widely recognized entry-level IT certification in the world, and it remains the single best starting point for anyone looking to build a career in information technology. Unlike most certifications that require a single exam, CompTIA A+ demands that you pass two separate tests: Core 1 (exam code 220-1101) and Core 2 (exam code 220-1102). Each exam covers distinct subject matter, uses its own set of performance-based questions, and presents a different type of challenge. Understanding the differences between these two exams is critical for building an effective study plan and avoiding the mistakes that lead to failed attempts.

This guide provides a thorough comparison of both exams, including the exact domains and their weights, the types of hands-on scenarios you will encounter, a recommended study timeline, and a clear answer to the question every new candidate asks: which exam should I take first?

Quick Comparison

Core 1

220-1101

Hardware

Networking

Troubleshooting

Core 2

220-1102

Operating Systems

Security

Software

Both exams required to earn CompTIA A+

Pass Rate Boost

Self-study only62%

With CertLabz94%

Core 1 Study

40 hrs

avg prep time

Core 2 Study

50 hrs

avg prep time

Most-Tested Domains

Core 1

Troubleshoot 29%

Hardware 25%

Networking 20%

Core 2

Security 25%

OS 22%

SW Trblsht 22%

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What PBQs Look Like on Each Exam

Performance-based questions (PBQs) are the most challenging part of both A+ exams. These are interactive scenarios where you must complete a real-world task rather than selecting an answer from a list. Core 1 PBQs typically involve hardware configuration, network troubleshooting, and command-line diagnostics. Core 2 PBQs lean toward operating system configuration, security settings, and software troubleshooting.

Sample Core 1 PBQ: Network Diagram Diagnostics

This realistic PBQ shows a network topology, just like the SmartBuilder simulations on the actual CompTIA exam. Click any device in the diagram to view its ipconfig output, then identify the affected workstation and the root cause by typing your answer.

Sample Core 2 PBQ: Firewall ACL Configuration

This PBQ presents a network diagram with three internal zones and an editable firewall ACL table, just like the SmartBuilder/PassComptia firewall PBQs. You must type port numbers and select PERMIT or DENY for each rule, then save the configuration.

The key difference between PBQs on the two exams is the environment. Core 1 PBQs tend to involve physical scenarios like configuring a network, connecting cables, or setting up hardware. Core 2 PBQs happen inside the operating system, where you navigate settings panels, configure security policies, and troubleshoot software issues. Both types require you to know more than just theory. You need hands-on experience navigating real interfaces.

Core 1 vs Core 2: Domain Breakdown

The most important distinction between these two exams is the subject matter. Core 1 is fundamentally about hardware, physical infrastructure, and networking. Core 2 is about software, operating systems, security concepts, and operational procedures. There is minimal overlap between the two, which is why CompTIA structured them as separate tests rather than one longer exam.

Core 1's largest domain is Hardware and Network Troubleshooting at 29%. This tells you exactly what CompTIA considers most important: your ability to diagnose problems with physical hardware, network connections, and infrastructure components. You will need to know how to identify faulty RAM, troubleshoot a network printer that is not responding, determine why a laptop display is flickering, and resolve connectivity issues involving switches, routers, and wireless access points.

Core 2's largest domain is Security at 25%, reflecting the industry's growing emphasis on security knowledge at every level. Even entry-level technicians are expected to understand malware types, social engineering attacks, physical security measures, and the basics of configuring firewalls and antivirus software. The Security domain on Core 2 is not as deep as what you would find on Security+, but it covers a wide range of foundational concepts that every IT support professional needs to understand.

Full Comparison Table

Notice that Core 2 has a slightly higher passing score (700 compared to 675). This is a detail many candidates overlook. While both exams have the same number of questions and the same time limit, Core 2 requires you to answer a slightly higher percentage of questions correctly. Combined with its broader scope covering operating systems, security, and troubleshooting, this makes Core 2 the exam that more candidates find challenging on their first attempt.

Domain Weight Visualization

The following chart shows how each domain is weighted across both exams. Understanding these weights helps you allocate your study time effectively. Spending extra hours on a domain worth 29% of your score is a better investment than perfecting one worth 11%.

Which Exam Should You Take First?

The short answer: take Core 1 first. The longer answer involves understanding why Core 1 makes a better starting point for the vast majority of candidates, even though CompTIA allows you to take them in any order.

Core 1 covers hardware and networking fundamentals that form the foundation for everything in Core 2. When you study operating systems on Core 2, you will benefit from already understanding the hardware those operating systems run on. When you study security on Core 2, you will find it easier to grasp concepts like firewall configuration and network-based attacks if you already understand how networking works from Core 1. When you troubleshoot software issues on Core 2, your hardware troubleshooting experience from Core 1 gives you a systematic diagnostic framework that transfers directly.

There are specific scenarios where taking Core 2 first could make sense. If you already have several years of help desk experience working primarily with Windows operating systems and software support, Core 2's content may feel more familiar and could serve as a confidence-building first win. However, for most candidates, especially those new to IT, Core 1's concrete, tangible subject matter (you can physically touch a motherboard, a RAM stick, an Ethernet cable) makes it easier to learn than Core 2's more abstract concepts.

Recommended 8-Week Study Plan

This timeline assumes you are studying approximately 10 to 15 hours per week. If you can study more, you can compress it. If you are working full time with limited availability, stretch each phase by a week. The important thing is maintaining the sequence: master Core 1 material before diving into Core 2.

During weeks 1 through 4, focus exclusively on Core 1 content. Resist the temptation to jump ahead to Core 2 topics. Building a solid hardware and networking foundation pays dividends when you reach the software and security material later. During week 5, take at least two full-length practice exams under timed conditions. If you are consistently scoring above 80%, schedule your Core 1 exam for the following week.

After passing Core 1, immediately shift your focus to Core 2. The momentum and confidence from your first pass will carry you through the second exam's broader scope. Weeks 6 and 7 should cover operating systems, security, and software troubleshooting in depth. Week 8 is dedicated to practice exams, PBQ review, and targeting any remaining weak areas. Schedule Core 2 within a week of completing your review phase.

Core 1 Deep Dive: What You Need to Know

Core 1 tests your knowledge of the physical and network layers of IT infrastructure. The Hardware domain (25%) covers everything from identifying motherboard components and form factors to understanding different types of storage drives (SATA vs NVMe vs M.2), RAM types (DDR4 vs DDR5), and the proper installation procedures for CPUs, cooling systems, and power supplies. You need to know connector types, cable specifications, and the correct tools for different hardware tasks.

The Networking domain (20%) covers the TCP/IP model, common ports and protocols (HTTP 80, HTTPS 443, DNS 53, DHCP 67/68, SSH 22, RDP 3389), wireless standards (802.11a/b/g/n/ac/ax), and basic network device configuration. You should understand the difference between a switch and a router, know how VLANs work at a basic level, and be able to configure a wireless access point.

Mobile Devices (15%) covers smartphone and tablet hardware, connectivity options (Bluetooth, NFC, IR), mobile operating system configurations, and synchronization methods. Virtualization and Cloud Computing (11%) tests your understanding of hypervisors, virtual machine setup, cloud service models (IaaS, PaaS, SaaS), and cloud deployment types (public, private, hybrid).

The largest domain, Hardware and Network Troubleshooting (29%), combines everything from the other four domains into practical diagnostic scenarios. You will need to follow a structured troubleshooting methodology: identify the problem, establish a theory of probable cause, test the theory, establish a plan of action, verify full system functionality, and document findings. This methodology appears repeatedly across both exams and is worth memorizing thoroughly.

Core 2 Deep Dive: What You Need to Know

Core 2 shifts from hardware to software, and the breadth of material is noticeably wider. The Operating Systems domain (22%) covers Windows 10 and Windows 11 in depth, including installation types, upgrade paths, system utilities (msconfig, Task Manager, Disk Management, Registry Editor), command-line tools (sfc, chkdsk, gpupdate, gpresult), and basic Linux and macOS navigation. You need to know the differences between Windows editions (Home vs Pro vs Enterprise), file system types (NTFS, FAT32, ext4), and how to manage users and permissions.

The Security domain (25%) covers malware categories (ransomware, trojans, rootkits, spyware, cryptominers), authentication methods (MFA, biometrics, smart cards), physical security (mantraps, bollards, badges), wireless security protocols (WPA2, WPA3, enterprise vs personal), and browser security settings. You also need to understand social engineering tactics, password best practices, and the basics of data destruction methods for end-of-life hardware.

Software Troubleshooting (22%) tests your ability to resolve application crashes, slow performance, browser redirect issues, OS boot failures, and Blue Screen of Death errors. You need to know which logs to check (Event Viewer, system logs), which tools to run (Safe Mode, System Restore, Startup Repair), and how to distinguish between hardware-caused and software-caused symptoms.

Operational Procedures (18%) covers documentation practices, change management, disaster recovery planning, safety procedures (ESD prevention, proper lifting, electrical safety), communication skills, and environmental controls. This domain often surprises candidates because it includes "soft skills" content that feels different from the technical material elsewhere on the exam. Do not underestimate it: 18% of your score comes from this domain, and questions about incident documentation and change management are common.

Common Mistakes to Avoid

The most frequent mistake candidates make is underestimating the PBQ sections. Many people focus exclusively on multiple-choice practice questions and then freeze when they encounter their first performance-based question on exam day. PBQs can take 5 to 10 minutes each, and they appear at the beginning of the exam. If you spend too long on them, you may not have enough time for the remaining multiple-choice questions. The best strategy is to flag PBQs and return to them after completing the multiple-choice section.

Another common mistake is studying both exams simultaneously. While the material does connect in places, trying to prepare for both exams at the same time dilutes your focus and extends your total study period. Sequential preparation, finishing one exam before starting the next, is more efficient and leads to higher pass rates.

Finally, do not neglect hands-on practice. Reading about how to configure a SOHO router is not the same as actually doing it. CertLabz PBQ labs give you interactive environments where you complete the exact types of tasks that appear on the real exam. This hands-on repetition builds the muscle memory and confidence you need when the clock is ticking on exam day.

Frequently Asked Questions