The Practice Exams
Three full-length exams, one for each checkpoint in your plan. Each is 50 questions in 45 minutes at roughly the same pace as the real thing, weighted across the five skill areas the way Microsoft weights them, and scored against the 700 line.
A practice exam taken with your phone next to you, in three sittings, with the clock paused and a browser tab open, tells you nothing except that you can look things up. Sit down, put the phone in another room, close every tab, start the clock, and do not stop. The score you get under real conditions is the only number worth having — and it is the number your whole plan is calibrated against.
The schedule, and why it is spaced this way
When to take each one
| Date | Exam | Purpose |
|---|
Three is the right number
More would not help. Full-length exams are expensive in time and energy, and they measure far more than they teach.
What raises a score is the day after the exam, when you work out why each miss happened. Three exams give you three full repair cycles, and each cycle aims the next stretch of the plan at something specific rather than at “more studying.”
On the days in between, use the topic drills. Same benefit, ten minutes instead of an hour.
Exam habits worth rehearsing now
Pacing
- About one minute per question. On the real exam that is roughly 45 minutes for 40 to 60 questions.
- Most AI-900 questions are recognition, not reasoning. If you know it, you know it in fifteen seconds.
- If a question passes about 75 seconds, answer it, mark it, and move. You can come back.
- Leave five minutes at the end to sweep your marked questions.
- Do not rewrite an answer you were confident about. Change it only if you can name the reason.
Reading
- Read the last line first. BEST, FIRST, MOST, and NOT each change which answer is correct.
- Find the verb in the scenario. “Extract,” “classify,” “detect,” “summarize,” and “generate” each point at a different service.
- Watch for “Select two.” Missing one costs the whole question.
- Two choices that mean the same thing are usually both wrong.
- Never leave anything blank. There is no penalty, so a blind guess is free expected value.
How the score is estimated
Microsoft reports AI-900 on a 1 to 1000 scale and passes at 700. It has never published the raw-to-scaled conversion, and the live exam weights questions by difficulty, so no practice test anywhere can produce your exact score.
What this site does is anchor a curve on the two facts that are public — the range and the passing mark — so that 70% correct lands exactly on 700. That makes the number honest as a readiness signal even though it is not an official score.
Read it this way: 800+ means you are comfortably ready, 700–799 means you would pass but the margin is thin, 620–699 means a focused repair day or two would get you there, and under 620 means the skill-area breakdown under your score is where all your attention should go.