This is the free Microsoft AB-900 practice question bank —
50 of 87 total questions, each with a full explanation, free to
read with no signup required. Updated 2026-10-13.
Every answer is verified against official Microsoft documentation —
see our methodology.
Question 1
Your company has a Microsoft SharePoint site named Site1. Site1 contains all the policies of the company’s HR department. The policies are saved as Microsoft Word documents.
All users have read access to Site1.
The HR department manager reports that user requests about the policies are NOT being addressed in a timely manner, especially around major holidays.
You need to recommend a solution to enable the users to find the HR department policies. The solution must provide the users with a list of common queries and ensure that responses are grounded only in Site1.
What should you include in the recommendation?
A. the personal assistant in Copilot in Word
B. a custom Microsoft 365 Copilot agent
C. the Researcher agent in Microsoft 365 Copilot
D. a Microsoft 365 Copilot notebook
Show Answer
Correct Answer: B
Explanation: A custom Microsoft 365 Copilot agent can be configured to use Site1 as its knowledge source and provide suggested prompts for common policy questions. This lets users find answers grounded in the HR documents stored on Site1.
Question 1
Your company plans to use Microsoft 365 Copilot.
You need to provide a user with the ability to use Microsoft 365 Copilot, including the Researcher and Analyst agent.
What should you use?
A. the Microsoft 365 admin center
B. the Microsoft Purview portal
C. the Microsoft Entra admin center
D. the Microsoft Defender portal
Show Answer
Correct Answer: A
Explanation: Microsoft 365 Copilot licenses, access to Copilot experiences, and management of Copilot agents such as Researcher and Analyst are administered through the Microsoft 365 admin center. Microsoft Purview focuses on compliance and data governance, Microsoft Entra on identity and access, and Microsoft Defender on security.
Question 1
You have a Microsoft SharePoint site as shown in the following exhibit.
You need to view the settings of SLabel1.
What should you use?
A. the Microsoft Defender portal
B. the SharePoint admin center
C. the Microsoft 365 admin center
D. the Microsoft Purview portal
Show Answer
Correct Answer: D
Explanation: Sensitivity label settings are managed in the Microsoft Purview portal under Information Protection. SharePoint can display and apply labels, but it is not where the label’s settings are configured.
Question 2
Your company uses Microsoft Purview data loss prevention (DLP) policies.
A user named User1 shares sensitive information to an external user by using Microsoft Teams.
You need to identify the sensitive content that was shared.
What should you use in the Microsoft Purview portal?
A. Diagnostics
B. Data explorer
C. Content explorer
D. Activity explorer
Show Answer
Correct Answer: D
Explanation: Use Activity explorer to investigate the DLP event: it shows user activities and policy matches, including sensitive information shared through Teams. Content explorer is primarily for browsing sensitive content stored in supported locations, rather than investigating the sharing activity.
Question 3
HOTSPOT
-
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Show Answer
Correct Answer: 1. No
2. Yes
3. No
Explanation: Communication Compliance does not scan images stored in SharePoint sites for offensive text. It anonymizes user identities by default during investigations, but it does not add disclaimers to monitored communications.
Question 3
Your company is evaluating Microsoft 365 Copilot pay-as-you-go billing instead of purchasing a Microsoft 365 Copilot license.
In which scenario can pay-as-you-go billing apply?
A. performing multi-step reasoning by using the Researcher agent
B. generating a recap of a Microsoft Teams meeting
C. using a custom agent that is grounded in work data
D. using the AI assistant to edit a document in Copilot in Word
Show Answer
Correct Answer: C
Explanation: Microsoft 365 Copilot pay-as-you-go billing applies to usage of custom agents created in Copilot Studio that are grounded in organizational (work) data, allowing organizations to pay based on metered usage instead of assigning Microsoft 365 Copilot licenses. Core Microsoft 365 Copilot experiences such as Copilot in Word, Teams meeting recap, and the Researcher agent require Microsoft 365 Copilot licensing rather than pay-as-you-go.
Question 4
HOTSPOT
-
You need to ensure that users can use an external system as a knowledge source for custom Microsoft 365 Copilot agents.
What should you configure in the Microsoft 365 admin center? To answer, select the appropriate settings in the answer area.
Show Answer
Correct Answer: Connectors
Explanation: Configure Copilot > Connectors in the Microsoft 365 admin center to set up Microsoft Graph connectors so external systems can be used as knowledge sources for custom Microsoft 365 Copilot agents.
Question 4
You use Microsoft 365 Copilot.
You need to schedule a prompt to run at midnight.
What task should you include in your solution?
A. Create an agent.
B. Create a notebook.
C. Run the prompt.
D. Save the prompt.
Show Answer
Correct Answer: C
Explanation: Run the prompt first. After it has been submitted, you can choose “Schedule this prompt” from the response and set it to run at midnight.
Question 5
HOTSPOT
-
Select the answer that correctly completes the sentence.
Show Answer
Correct Answer: Microsoft Graph
Explanation: Microsoft Graph provides organizational signals, including collaboration history and document relevance, that help Microsoft 365 Copilot tailor its responses.
Question 5
HOTSPOT
-
Your organization has a Microsoft 365 subscription.
A user named John is assigned an admin role as shown in the following exhibit.
Use the drop-down menus to select the answer choice that completes the statement based on the information presented in the graphic.
Show Answer
Correct Answer: view all the users in the Microsoft Entra tenant
Explanation: The image shows John has the Global Reader role. Global Reader provides read-only access across Microsoft 365 admin centers, including Microsoft Entra, allowing user information to be viewed but not granting access to SharePoint content, Exchange mailbox content, or eDiscovery.
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