AB-900 Microsoft · Fundamentals

AB-900 practice test

Microsoft 365 Copilot and Agent Administration Fundamentals. A full AB-900 practice exam across the October 2026 skills outline: Microsoft 365 objects and security, data protection and governance for Copilot, and Copilot and agent administration, with a case study and exhibits.

  • 2 practice tests + challenge test
  • 150 questions
  • 40 questions, 60 min per test
  • Pass at 70%

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Free AB-900 sample questions

3 questions from the free diagnostic, with answers and explanations.

Question 1 · Identify the core objects of Microsoft 365 services

The IT team creates a distribution list for the marketing team in the Exchange admin center and keeps the default settings. Who can send messages to it?

  1. Internal senders only
  2. Anyone on the internet
  3. Only the list owners
  4. Only guests
Show answer

Answer: A (Internal senders only)

The default delivery setting allows messages only from people inside the organization.

Question 2 · Understand the Microsoft 365 security principles

Which three principles make up Zero Trust?

  1. Verify explicitly, least privilege, assume breach
  2. Trust the network, verify once, allow by default
  3. Encrypt everything, block guests, log nothing
  4. Patch monthly, back up weekly, audit yearly
Show answer

Answer: A (Verify explicitly, least privilege, assume breach)

The three Zero Trust principles are verify explicitly, use least privilege access, and assume breach.

Question 3 · Identify the core security features of Microsoft 365 services

The IT team wants to see how a new Conditional Access policy would affect sign-ins before it blocks anyone. Which policy setting should it use?

  1. Report-only
  2. On
  3. Off
  4. On, for admins only
Show answer

Answer: A (Report-only)

Report-only mode evaluates the policy without enforcing it.

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What the AB-900 practice covers

Share of practice questions per skill area.

  • Identify the core security features of Microsoft 365 services12%
  • Identify data protection and governance risks for Microsoft 365 and Copilot12%
  • Understand features and capabilities of Copilot and agents12%
  • Identify the core objects of Microsoft 365 services10%
  • Understand the Microsoft 365 security principles10%
  • Understand Microsoft Purview10%
  • Perform basic administrative tasks for Copilot10%
  • Perform basic administrative tasks for agents10%
  • Understand data security implications of Copilot8%
  • Identify and monitor oversharing in SharePoint in Microsoft 3656%

Question formats

  • Single choice
  • Hotspot (drop-down and yes/no)
  • Case studies
  • Exhibits (screenshots, diagrams and code)

Career path: Fundamentals

Cloud, data, AI, security and Power Platform basics for anyone starting out, and for business roles working with technical teams.

  1. AZ-900
  2. DP-900
  3. AI-901
  4. SC-900
  5. PL-900
  6. AB-900

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AB-900 practice test FAQ

Is there a free AB-900 practice test?

Yes. Create a free account and take the AB-900 free diagnostic: 10 questions across every skill area of the exam, with a study plan for the topics to work on. You can retake it as often as you like.

How many questions are in each ExamKite AB-900 practice test?

Each full practice test has 40 questions with a 60-minute timer, and you pass at 70%. There are 2 practice tests plus a harder challenge test, with 150 questions in total.

Which question formats does the AB-900 practice include?

Single choice, hotspot (drop-down and yes/no), case studies and exhibits (screenshots, diagrams and code), the same formats you meet on the real exam.

Are these real AB-900 exam questions?

No. They are original questions written for ExamKite and mapped to the Microsoft skills outline, never copied from the real exam. Using leaked exam questions breaks the certification provider's exam rules and can get your certification revoked.

More answers in the full FAQ.

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