How long does it take to prepare for the CompTIA A+ (Core 1)?

Our record puts the exam at 90 minutes, which tells you how much is at stake in one sitting. Preparation time is usually measured in weeks rather than days for a foundation exam of this size, and this one scores 2/10 for difficulty in our bank.

Which CompTIA A+ (Core 1) domain should I study first?

Hardware and Network Troubleshooting, at 28% of the exam. It carries the most weight, so it is where your preparation effort returns the most points.

Should I do practice questions or read a book?

Do practice questions first for any domain you are weak in, and read for the ones you understand but cannot apply. Reading everything twice is the most common way to fail: it feels like progress and it is not. Certilum has 90 questions for this exam, scored per domain against the official weights.

What score should I have on a mock before booking the exam?

At least 85% on a timed mock in the real format. Our 75% benchmark leaves very little margin.

What is the single best way to find my weak domain?

Take one full mock, then look at the per-domain breakdown rather than the total. The total tells you whether you passed; the breakdown tells you which domain to study next, and that is the only actionable number in the result.

Study plan

How to Pass the CompTIA A+ (Core 1) Exam

220-1201

A study plan for the CompTIA A+ (Core 1) certification exam, built from the official domain weights instead of a generic template. Begin by mapping each domain to the official objectives. Study hardware and networking components in manageable blocks, then reinforce every domain with hands-on labs, virtual machines, and practice exams. Because Hardware and Network Troubleshooting is the largest domain, prioritize troubleshooting workflows, diagnostic tools, and simulated PBQs. Review at regular intervals and track weak areas.

5 domains

90 questions

90 min

75% to pass

certilum

Study in weight order, not topic order

The plan below follows the official blueprint weights, so the order of study is the order that returns the most points.

1
Hardware and Network Troubleshooting
28%
- Apply the best practice methodology for resolving hardware and network issues
- Troubleshoot motherboard, CPU, RAM, and power issues
- Troubleshoot storage and boot issues
- Troubleshoot display issues
- +2 more topics in the blueprint
25 practice questions tagged to this domain.
2
Hardware
25%
- Install and configure motherboard components
- Differentiate between display types and connections
- Install and configure storage devices and use appropriate media
- Install and configure common internal hardware components
- +2 more topics in the blueprint
22 practice questions tagged to this domain.
3
Networking
23%
- Compare and contrast TCP and UDP ports, protocols, and their purposes
- Explain common network configuration concepts
- Compare and contrast common networking hardware devices
- Compare and contrast internet connection types, network types, and their characteristics
- +2 more topics in the blueprint
21 practice questions tagged to this domain.
4
Mobile Devices
13%
- Install and configure laptop hardware and components
- Configure settings for mobile devices
- Install and configure basic mobile device network connectivity
- Install and configure email, calendars, and messaging
- +1 more topics in the blueprint
12 practice questions tagged to this domain.
5
Virtualization and Cloud Computing
11%
- Summarize cloud computing concepts
- Compare and contrast cloud types and services
- Summarize aspects of client-side virtualization
10 practice questions tagged to this domain.

Three phases, in order

Most failures are process failures, not knowledge failures.

Step 1

Phase 1 — Learn the high-weight domains

Start where the points are. The first domains on this plan carry the most weight, so a gap there costs the most. Cover the objectives, then close each topic with practice questions you actually get wrong.

Step 2

Phase 2 — Close the mid-weight domains

The middle of the blueprint is where most candidates plateau. These domains are worth less per topic than the first phase, but they add up fast, and they are the usual difference between a near miss and a clear pass.

Step 3

Phase 3 — Timed full mocks

Stop reading new material at this point. Run full-length exams under the real time limit and the real format, and use the per-domain breakdown to find which domain is still costing you the pass.

Where we put the emphasis

Certilum emphasizes scenario-based troubleshooting, memorization of ports and connectors, practical network configuration, and time management for performance-based questions. We recommend an objective-by-objective plan with regular practice tests.

The order matters less than the loop. Every domain you finish should end with questions you got wrong, because the mistake is the only thing you actually needed to study. On the CompTIA A+ (Core 1) that loop is worth 25% of the exam in the first block alone.