CompTIA A+ Practice Mock Test 21
Mock test 21 — 24 questions.
About this mock
Difficulty: IntermediateCompTIA A+ Mock 21 uses operating systems as the main route into IT support tickets. The operating systems questions move between networking basics, security controls and troubleshooting method, which reduces guesswork. That gives operating systems a practical next step. During CompTIA A+ Mock 21, treat operating systems as the key checkpoint.
Topics included
- Operating systems
- Networking basics
- Security controls
- Troubleshooting method
- Applied scenario review 21
Common mistakes in this mock
- Confusing similar components in malware response steps
- Forgetting documentation in malware response steps
- Missing the user impact in malware response steps
- Skipping the obvious check in malware response steps
Who this mock is for
Revisers who missed questions around operating systems and want a focused checkpoint.
How to practise
How to use Practice mode
Practice mode shows the correct answer and an explanation after every question, with no timer. Use it the first time you sit a topic, when you want to learn as you go, or when you're targeting a specific weak area.
How to use Exam mode
Exam mode gives timed practice for revision. Official timings vary by exam provider and skill, so always check the official test format before booking.
Frequently asked questions
- What is the CompTIA A+ pass mark?
- Core 1 (220-1201): 675 out of 900. Core 2 (220-1202): 700 out of 900. You must pass both exams to be awarded the A+ certification.
- How much do the exams cost in the UK?
- Each Core exam is around £253 (2025 pricing at Pearson VUE in the UK). Both exams together cost roughly £500.
- How long are the real exams?
- Up to 90 questions in 90 minutes per Core exam, including drag-and-drop and performance-based items.
- How long should I revise?
- Most candidates need 80–150 hours of structured study and several full-length mocks at 80%+ before booking.