Free to browse — no account required

Pass the exam. Then pass the interview.

The first principle is that you must not fool yourself — and you are the easiest person to fool.

— Richard P. Feynman

Every question is readable without signing up. An account adds timed mock exams, saved progress and AI explanations.

Practice for a certification exam

9,500 multiple-choice questions across 34 exams, with the correct answer and an explanation on every one.

3,242 open-ended interview questions across 32 topics, each with a full written answer — sorted into Beginner, Intermediate and Advanced.

Start free, then add the tools that help you close the gap.

Open question bank
Every question, option and answer is visible without an account. Search by keyword and filter by exam domain.
Timed mock exams
Sit a full-length exam under real time pressure, then review each answer with the reasoning behind it.
AI explanations
Ask why an answer is right and get a plain-language explanation of the service and the trade-offs.
Readiness score
Track accuracy per exam domain and see where you stand before booking the real thing.

1
Pick your certification
Choose from 34 exams across 8 vendors, grouped by provider.
2
Practise and review
Work through questions, reveal answers, and read the explanation for each.
3
Measure readiness
Create an account to save progress, sit mock exams and track your score by domain.

No sign-up, no credit card. Open a certification and begin.