AI-901: Azure AI Fundamentals – 5 Practice Tests 2026
Microsoft Foundry, responsible AI, agents, speech, vision and information extraction – 500 questions, all explained
Are you ready for Microsoft exam AI-901, Azure AI Fundamentals? These five practice tests are built to answer that question honestly, before you book the exam.
You get 500 questions, a hundred per test, written against the current study guide with its skills measured as of April 2026. That matters more than it sounds: AI-901 replaced the retired AI-900 exam and dropped the classic machine learning domain entirely. The syllabus is now built around Microsoft Foundry, formerly Azure AI Foundry, and the Foundry Tools that used to be called Azure AI services. Practice material written for AI-900 will send you into the exam prepared for the wrong test.
The five tests get progressively harder, on purpose. Test 1 covers the core of every objective with short, single-concept questions. Test 2 moves to realistic scenarios where the wrong answers are the services that genuinely get confused with each other. Test 3 gives you two defensible options and one constraint that decides between them. Test 4 goes into implementation detail: parameters, portal steps, SDK requirements and service limits. Test 5 is a full simulation at real exam pace, a hundred questions in ninety minutes, with the domains mixed and several constraints per question.
Every question is explained twice over. Each answer option has its own feedback telling you why it is right or wrong, and what that wrong option actually is, so you learn the distinction rather than the answer. Each question then closes with a full explanation and a link to the Microsoft Learn page it came from, so you can read further where you need to.
Results are scored per exam domain, so a weak score tells you exactly where to spend your remaining study time. The pass mark is set at 80 percent, and 85 percent on the final simulation, deliberately above the real exam's bar: passing at your own desk should mean you have margin to spare on the day.
These are practice tests with explanations, not a video course. They work best alongside the free Microsoft Learn learning paths for AI-901.
Groundwork: Core AI Concepts and Foundry Basics
100 questions · 140 minutes · pass mark 80%
Start here. This first test covers the core of every exam objective without any tricks: the six responsible AI principles, how generative models work at token and embedding level, when to pick a small or a large model, the main deployment types, and the workloads AI-901 asks you to recognise. On the Foundry side it covers the essentials of prompts, agents, tools, speech, vision and information extraction. Questions are short and each one tests a single idea, so you find out quickly which topics you already own and which need reading. You get 140 minutes for 100 questions, and the pass mark is 80%. That is deliberately above the real exam's bar: the exam reports a scaled score, not a percentage, and passing a practice test at your own desk should mean you have margin to spare on the day. Every answer option is explained individually, and each question closes with a full explanation and a link to the Microsoft Learn page it comes from.
In Practice: Choosing the Right Service
100 questions · 130 minutes · pass mark 80%
The step from knowing a definition to picking the right service. Every question is a short, realistic scenario, and the wrong answers are the services and features that genuinely get confused with each other: file search against web search, batch against fast transcription, key phrase extraction against entity recognition, Content Understanding against Document Intelligence. It also goes deeper into the platform itself: quotas and throttling, provisioned throughput, guardrails and Prompt Shields, evaluations, and how a Foundry resource relates to a project. You get 130 minutes for 100 questions and need 80% to pass. Expect to slow down on a few of these. As in every test, each option has its own feedback and every question carries a full explanation with a source link.
Trade-offs: When Two Answers Look Right
100 questions · 120 minutes · pass mark 80%
The test where two options are both defensible and a single constraint decides. Data residency, cost, latency, whether labelled training data exists, whether the workload has to run on-premises: each question hands you one of these and expects you to let it settle the choice. This is how the real exam separates candidates who memorised a service list from candidates who understand what each service is for. You get 120 minutes for 100 questions and need 80% to pass, so read each scenario twice before you answer. Every option is explained individually, so when you pick the defensible-but-wrong answer you will see exactly which constraint you overlooked.
Under the Hood: Parameters, Portal and SDK
100 questions · 110 minutes · pass mark 80%
Implementation detail. Which parameter changes what, which value goes where, which steps the Foundry portal takes you through, what the SDK needs to connect, and where the service limits sit. Questions here combine several requirements at once and often ask for the correct order of actions rather than a single fact. This is the part of AI-901 that assumes you have actually built something, which is why the exam's audience profile expects Python syntax and familiarity with SDKs and REST APIs. You get 110 minutes for 100 questions and need 80% to pass. Work through the explanations even on the questions you get right; the detail is the point.
Exam Day: Full-Length Simulation
100 questions · 90 minutes · pass mark 85%
A full rehearsal, at exam weight and exam pace. A hundred questions in ninety minutes, the same pace per question as the real AI-901 exam, with the domains mixed rather than grouped, the longest scenarios of the series, and several questions carrying more than one constraint at a time. Nothing is held back and nothing is signposted. The pass mark here is 85%, higher than the other four tests and higher than the real exam's bar, and that is the point: this is your readiness gate, not a participation prize. Clear 85 out of 100 inside the time and you have real margin for exam day. Whatever your score, the per-option feedback and the linked Microsoft Learn pages tell you precisely where to spend your last hours of study.
Exam domains covered
Who is this for
**Answer 1**
Anyone preparing for Microsoft exam AI-901, Azure AI Fundamentals, who wants to know whether they are actually ready before booking the exam. That includes developers and IT professionals moving into AI work, students and career changers taking their first Microsoft certification, and consultants, analysts, project managers and salespeople who need a credible grounding in Azure AI and Microsoft Foundry. It also suits anyone who studied for the retired AI-900 exam and needs to find out what has changed, since AI-901 dropped the classic machine learning domain entirely and rebuilt the syllabus around Microsoft Foundry. These are practice tests with full explanations, not a video course, so they work best next to the free Microsoft Learn material rather than instead of it.
Free exam guide
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