AB-900 Practice Questions: Free Study Resource for Microsoft 365 Copilot Fundamentals

Last Updated: March 2026

Preparing for the AB-900 exam without practice questions is like revising for a driving test without ever sitting behind the wheel. The AB-900 (Microsoft 365 Copilot and Agent Administration Fundamentals) covers a surprisingly broad range of topics, and despite the Copilot branding, 35-40% of the exam focuses on data protection and governance through Microsoft Purview.

Practice questions are the fastest way to identify knowledge gaps, build confidence with the exam format, and test whether you truly understand the material or have simply read about it. Candidates who regularly practise with exam-style questions consistently outperform those who rely on reading alone.

This article provides five free sample questions across all three AB-900 exam domains, with detailed explanations to help you understand not just the correct answers but why the alternatives are wrong.

AB-900 Exam Overview

Before diving into practice questions, here is what you need to know about the exam format.

Detail	Information
Exam Name	Microsoft 365 Copilot and Agent Administration Fundamentals
Exam Code	AB-900
Duration	45 minutes
Questions	40-60 questions
Passing Score	700 out of 1000
Format	Multiple choice, true/false, image-based identification
Level	Beginner (Fundamentals)
Replaces	MS-900 (retiring 31 March 2026)

Exam pricing varies by region. Check Pearson VUE for current pricing in your country.

For a comprehensive overview of the exam structure and why it is harder than most fundamentals exams, read our comprehensive AB-900 exam guide.

AB-900 Exam Domains

The exam tests three domains, each with a specific weighting. Understanding these weightings is essential for prioritising your study time and practice.

Domain	Weighting	Focus Area
Domain 1	30-35%	Core features and objects of Microsoft 365 services
Domain 2	35-40%	Data protection and governance for Microsoft 365 and Copilot
Domain 3	25-30%	Basic administrative tasks for Copilot and agents

Domain 2 carries the highest weighting. Many candidates underestimate this section because the exam name emphasises Copilot, but Microsoft Purview knowledge is critical for passing.

AB-900 Practice Questions by Exam Domain

The following sample questions reflect the style, difficulty, and topic coverage of the real AB-900 exam. Each question includes a detailed explanation. These are illustrative examples based on official exam objectives, not actual exam questions.

Domain 1: Core Features and Objects of Microsoft 365 Services

Question 1: Licence Management

An organisation has recently purchased Microsoft 365 E5 licences. A new employee needs access to Microsoft Teams, Exchange Online, and SharePoint. The IT administrator wants to ensure the employee receives the correct level of access. What is the most efficient way to manage this?

• A) Assign individual service licences for Teams, Exchange, and SharePoint separately
• B) Assign the Microsoft 365 E5 licence to the user directly or through a group
• C) Create a custom role in Microsoft Entra that grants access to each service
• D) Configure conditional access policies to allow access to each application

Correct Answer: B

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Question 2: Zero Trust Principles

Your organisation is implementing a Zero Trust security model for its Microsoft 365 environment. Which of the following best describes the core principle of Zero Trust?

• A) Trust users on the corporate network but verify external connections
• B) Never trust any request, always verify identity and device health regardless of network location
• C) Block all access from outside the corporate firewall
• D) Trust all authenticated users once they pass multi-factor authentication

Correct Answer: B

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Domain 2: Data Protection and Governance

Question 3: Sensitivity Labels

An organisation needs to protect confidential financial reports so that only members of the finance team can open them, even if the files are accidentally shared externally. Which Microsoft Purview feature should they use?

• A) Data Loss Prevention (DLP) policies
• B) Sensitivity labels with encryption
• C) Retention policies
• D) Communication Compliance policies

Correct Answer: B

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Domain 3: Copilot and Agent Administration

Question 4: Copilot Licensing Models

An organisation wants to deploy Microsoft 365 Copilot to a pilot group of 50 users before committing to a full rollout. They want to control costs closely during the trial. Which licensing approach should they consider?

• A) Purchase annual Copilot licences for all employees and disable access for non-pilot users
• B) Use the pay-as-you-go model to control costs based on actual consumption
• C) Wait for a free trial offer from Microsoft before starting the pilot
• D) Deploy Copilot without licences using the built-in free tier

Correct Answer: B

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Question 5: Agent Administration

A department has created a custom agent in Microsoft 365 Copilot to help employees find internal policy documents. Before the agent can be used by other employees, what must happen?

• A) The agent is automatically available to all users once created
• B) The agent must go through an approval process before it can be shared
• C) Only the creator can ever use the agent
• D) The IT department must recreate the agent in the Microsoft 365 admin centre

Correct Answer: B

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How to Use Practice Questions Effectively

Answering practice questions is only useful if you approach them strategically. Here are the methods that produce the best results.

Active Recall Over Passive Reading

Before looking at the answer options, try to formulate your own answer based on the question stem. This forces your brain to retrieve information actively rather than passively recognising it, a technique proven to improve long-term retention.

Review Every Explanation

Read the explanation for every question, including ones you answered correctly. Understanding why incorrect options are wrong is just as valuable as knowing the right answer. On the real exam, distractors are designed to look plausible, and knowing why they fail helps you eliminate them quickly.

Track Your Performance by Domain

Keep a record of your scores across the three domains. If you consistently score below 70% in Domain 2 (data protection and governance), that tells you exactly where to focus your remaining study time.

Simulate Exam Conditions

Once you have covered the material, take at least one full-length timed practice test under exam conditions: no notes, no pausing, 45 minutes. This builds stamina and helps you calibrate your pacing for the real exam.

AB-900 vs MS-900: What Changed in the Practice Questions

If you previously studied for MS-900, you will find some familiar ground in AB-900, but significant new territory as well.

Area	MS-900	AB-900
Microsoft 365 Core Services	Covered broadly	Covered with admin centre focus
Security Fundamentals	Basic coverage	Expanded with Entra and Defender XDR
Copilot Administration	Not covered	Full domain (25-30%)
Data Protection (Purview)	Minimal	Highest-weighted domain (35-40%)
Agent Administration	Not covered	Included in Domain 3
DSPM for AI	Not covered	New topic in Domain 2
Oversharing Controls	Not covered	Dedicated sub-domain
Overall Difficulty	Standard fundamentals	Harder, wider and deeper

Former MS-900 candidates should focus their practice on the entirely new topics: Copilot and agent administration, DSPM for AI, and SharePoint oversharing controls. Your existing Microsoft 365 knowledge gives you a head start on Domain 1.

For a detailed breakdown of how the two exams compare, see our AB-900 exam guide.

Free AB-900 Practice Test Resources

Microsoft Exam Sandbox

Microsoft provides a free exam sandbox that replicates the actual testing interface. While it does not contain AB-900-specific questions, it familiarises you with question formats, navigation, and the exam experience. Available at aka.ms/examdemo.

Microsoft Learn Knowledge Checks

The two official Microsoft Learn learning paths include knowledge checks at the end of each module. These are lighter than real exam questions, but they confirm your understanding of core concepts. Be aware that early candidates report the Learn module assessments are noticeably easier than the actual exam.

Official Practice Assessment

Microsoft typically releases a free practice assessment approximately 8 weeks after an exam reaches general availability. Since AB-900 reached GA in February 2026, the official practice assessment should become available around April 2026. Check the AB-900 certification page for updates.

Examinotion AB-900 Practice Exams

Our platform offers AB-900 practice questions that mirror the real exam format with detailed explanations for every answer. Start with free questions to test your readiness, then unlock the full question bank when you are ready for comprehensive preparation. Try AB-900 practice questions on Examinotion.

Tips for Answering AB-900 Exam Questions

Read the Full Question

AB-900 questions often include specific constraints, such as a department, a compliance requirement, or a licensing model. Missing a single detail can lead you to the wrong answer. Read the entire question stem before looking at options.

Eliminate Obviously Wrong Options

Most questions have at least one clearly incorrect option. Eliminating it immediately improves your odds and reduces decision fatigue. Look for options that confuse concepts (e.g., using a security tool for a licensing question) or that describe features from a completely different service.

Watch for Scope Traps

AB-900 covers multiple admin centres and Purview tools that have overlapping names but different purposes. A question about monitoring Copilot usage requires admin centre analytics, not Purview audit logs. Pay attention to what is being asked, whether it is identify, configure, monitor, or troubleshoot, and match that to the correct tool.

Manage Your Time

With 40-60 questions in 45 minutes, you have roughly 45-70 seconds per question. Do not spend more than 90 seconds on any single question. Flag difficult questions and return to them if time permits.

Prioritise Domain 2

If you are running short on study time, focus your practice on Domain 2 (data protection and governance). At 35-40% of the exam, it has the highest weighting and covers the topics that are most unfamiliar to candidates coming from an MS-900 background.

Frequently Asked Questions

How many questions are on the AB-900 exam?

Microsoft does not publish an official question count. Based on first-hand reports from candidates who have sat the exam, expect between 40 and 60 questions. The exact number varies between test sessions because Microsoft uses question pools.

What is the passing score for AB-900?

The passing score is 700 out of 1000 on a scaled scoring system. This does not mean you need to answer 70% of questions correctly, as Microsoft uses psychometric scaling that accounts for question difficulty. Some questions are worth more than others.

Is the AB-900 exam harder than MS-900?

Yes. AB-900 covers significantly more ground than MS-900, with early candidates describing it as having "double the content" of its predecessor. The addition of Copilot administration, agent management, DSPM for AI, and expanded Purview coverage makes it the most comprehensive fundamentals exam Microsoft currently offers. Read our how to pass the AB-900 exam guide for preparation strategies.

What question types appear on the AB-900 exam?

Candidates report encountering multiple choice (single answer from four options), true/false questions, and image-based identification questions where you identify items in screenshots or diagrams. Microsoft's certification page also notes that interactive components may be included.

Are there free AB-900 practice tests available?

Yes. Microsoft provides free knowledge checks within the Learn modules and a general exam sandbox at aka.ms/examdemo. An official practice assessment is expected around April 2026. Examinotion also offers free AB-900 practice questions with detailed explanations at examinotion.com/exam/ab-900.

Does Microsoft provide an official AB-900 practice assessment?

Not yet as of March 2026. Microsoft typically releases official practice assessments within 8 weeks of an exam reaching general availability. Since AB-900 reached GA in February 2026, the official practice assessment should become available around April 2026.

What topics should I focus on for AB-900 practice questions?

Prioritise Domain 2 (data protection and governance) as it carries the highest weighting at 35-40%. Key topics include Microsoft Purview sensitivity labels, DLP policies, DSPM for AI, Copilot data access and permissions, and SharePoint oversharing controls. Many candidates are surprised by how much Purview knowledge is required. See our AB-900 exam guide for a complete domain breakdown.

How long should I study for the AB-900 exam?

Most candidates need 2-4 weeks of dedicated study time, depending on their existing Microsoft 365 experience. If you are coming from an MS-900 background, focus your time on the new Copilot and Purview content. If you are starting fresh, allow at least 4 weeks. Our how to pass the AB-900 exam guide includes a detailed study plan.

Start Practising for AB-900 Today

These sample questions give you a taste of the format across all three AB-900 exam domains, but the real exam covers far more ground. To build the depth of knowledge needed for this certification, you need consistent practice with a larger question bank.

With MS-900 retiring on 31 March 2026, now is the ideal time to prepare for AB-900. The certification landscape is shifting, and candidates who earn the new Microsoft 365 Copilot and Agent Administration Fundamentals credential early will stand out.

Start with Examinotion's AB-900 practice questions, test your readiness with free questions, review detailed explanations, and track your performance across all three domains. When you are ready for comprehensive preparation, unlock the full question bank to maximise your chances of passing on the first attempt.

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