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Quick answer: How many practice tests should I take?
- Full-length — 3–5 before the exam.
- Topic quizzes — daily, from week one.
- Ready score — 80–85%+ consistently.
- Review — every wrong (and lucky) answer.
- Avoid — brain dumps: they breach exam agreements.
Key takeaways
- Take 3–5 full-length practice exams and daily short quizzes.
- Aim for consistent 80–85%+ on fresh questions before sitting.
- Practice testing is one of the two most effective learning techniques (Dunlosky et al., 2013).
- Official practice tests best match the real exam's style.
- Brain dumps violate candidate agreements and can get certifications revoked.
How many practice tests do you need?
| Exam type | Full practice exams | Ready score |
|---|---|---|
| Fundamentals (AZ-900, Cloud Practitioner) | 2–3 | 85%+ |
| Associate (AWS Associate, AZ-104, PL-300) | 3–5 | 80–85%+ |
| Security+, CySA+ | 3–5 | 85%+ |
| PMP | 3–4 (180 questions each) | 75–80%+ on quality mocks |
| PSM I | Many short open assessments | 100% on Scrum Open, 85%+ elsewhere |
Why practice tests work
How to review a practice test
- For each wrong answer, write why the right answer is right and yours was wrong.
- Also review questions you guessed correctly.
- Tag each miss by domain and track totals.
- Turn misses into flashcards.
- Retest weak domains with short quizzes before your next full test.
Are practice tests worth paying for?
Official practice tests (AWS Skill Builder, Microsoft Learn practice assessments, PMI Study Hall) best match real exam style. Reputable third-party tests (well-reviewed providers, including well-rated Udemy practice sets) are often worth a small cost. PSI and similar testing-provider practice tests can help you get used to the interface. Avoid anything that claims to show "real exam questions".
Prove it free: the tests that match this guide
Free SOA practice tests to add to your rotation (independent of the exam bodies). (Disclosure: Science of Apps publishes these tests.)
- AWS Cloud Practitioner Practice ExamAdd to your rotation if you're sitting AWS Cloud Practitioner.Start free test →
- AZ-900 Practice TestAdd to your rotation if you're sitting Microsoft AZ-900.Start free test →
- CompTIA Security+ Practice TestAdd to your rotation if you're sitting CompTIA Security+.Start free test →
- PMP Practice ExamAdd to your rotation if you're sitting the PMP.Start free test →
Why brain dumps are a bad idea
Brain dumps share leaked exam questions. Using them breaches the candidate agreements of AWS, Microsoft, CompTIA and others, can lead to revoked certifications and bans, and leaves you without real skills to show in interviews.
Free certification practice questions
- Microsoft Learn free practice assessments.
- AWS Skill Builder official practice question sets.
- Scrum.org Open Assessments.
- Science of Apps free scenario tests (10–30 minutes) to check readiness across 29 categories.
Frequently asked questions
How many practice tests should I take before a certification exam?
Three to five full-length practice exams plus daily topic quizzes, sitting the exam once you score 80–85%+ consistently.
Are Udemy practice tests worth it?
Well-reviewed, recently updated Udemy practice sets can be good value; prefer official practice tests where available.
Are PSI practice tests worth it?
They help you get familiar with the testing interface and format; use them alongside content-focused practice exams.
What score should I get on practice tests before the real exam?
Aim for consistent scores of 80–85% or more on fresh, high-quality practice tests.
Why are brain dumps a bad idea?
Brain dumps share leaked exam questions. Using them breaches the candidate agreements of AWS, Microsoft, CompTIA and others, can lead to revoked certifications and bans, and leaves you without real skills to show in interviews.
Sources
- Dunlosky et al. (2013): Improving students' learning with effective learning techniques
- Roediger & Karpicke (2006): Test-enhanced learning
- Microsoft Learn: practice assessments
- AWS Skill Builder
- Scrum.org Open Assessments
- Science of Apps: free online certifications
- Checked November 11, 2026. Figures that change — fees, salaries, prices — are reviewed every six months; if something is out of date, tell us.
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