Free PDF Quiz 2026 Microsoft Professional AB-900: Exam Microsoft 365 Copilot & Agent Administration Fundamentals Simulator Free

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Microsoft AB-900 Exam Overview:

Certification Vendor:Microsoft
Exam Name:Microsoft 365 Copilot & Agent Administration Fundamentals (AB-900)
Exam Number:AB-900
Exam Duration:45 minutes
Available Languages:English
Exam Format:Multiple choice, Interactive questions, Scenario-based questions
Related Certifications:Microsoft 365 Fundamentals (MS-900)
Recommended Training:Microsoft Learn Microsoft 365 Copilot Documentation
Microsoft Learn AB-900 Study Guide
Exam Registration:Official Microsoft Certification Page
Pearson VUE Exam Registration
Sample Questions:Microsoft AB-900 Sample Questions
Exam Way:Online proctored exam via Pearson VUE or Certiport
Pre Condition:Basic familiarity with Microsoft 365 services, identity, security, and administration concepts is recommended.
Official Syllabus URL:https://learn.microsoft.com/en-us/credentials/certifications/copilot-and-agent-administration-fundamentals/

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Microsoft AB-900 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Identify the core features and objects of Microsoft 365 services: This domain covers the main Microsoft 365 objects such as users, groups, licenses, mailboxes, SharePoint sites, and Teams. It also focuses on managing organization settings, roles, authentication, authorization, and core security features using Microsoft Entra and Microsoft Defender.
Topic 2
  • Perform basic administrative tasks for Copilot and agents: This domain focuses on managing Copilot and agents, including licensing, feature controls, and usage monitoring. It also covers creating agents, managing prompts, configuring user access, and monitoring agent activity through admin centers.
Topic 3
  • Understand data protection and governance tasks for Microsoft 365 and Copilot: This domain explains how Microsoft Purview protects and governs organizational data through classification, sensitivity labels, retention, and compliance tools. It also covers how Copilot accesses data, follows permissions, and how administrators monitor risks, alerts, and oversharing.

Microsoft 365 Copilot & Agent Administration Fundamentals Sample Questions (Q79-Q84):

NEW QUESTION # 79
Hotspot Question
Select the answer that correctly completes the sentence.

Answer:

Explanation:


NEW QUESTION # 80
Select the answer that correctly completes the sentence.

Answer:

Explanation:

The correct answer is Microsoft Graph . Microsoft documents that Microsoft 365 Copilot accesses organizational content and context through Microsoft Graph . Microsoft Graph provides the user's work context, including items such as emails, chats, meetings, files, contacts, and calendar data , along with relationship and activity signals that help Copilot ground and rank responses. Microsoft also explains that Copilot combines organizational content with the user's working context, such as recent chat conversations, email exchanges on a topic, and the meeting the user is currently in. Those are exactly the kinds of signals described in the question, including collaboration history and document relevance.
The other options do not fit this sentence. Microsoft Copilot Studio is used to build and customize copilots and agents. Microsoft Purview is for compliance, governance, and data protection. Microsoft Viva Insights provides workplace analytics and insights, but it is not the core service described by Microsoft as supplying the contextual signals that ground Microsoft 365 Copilot responses. Therefore, the only option that correctly completes the sentence is Microsoft Graph .


NEW QUESTION # 81
Your organization has a Microsoft 365 subscription.
You need to evaluate your organization's Identity Secure Score.
Which two factors affect the score? Each correct answer presents a complete the solution.
NOTE: Each correct selection is worth one point.

Answer: A,D

Explanation:
[B]
The number of Global Administrators directly affects your Identity Secure Score.
The score is impacted by two primary recommendations regarding these roles:
Designate more than one Global Administrator:
Microsoft requires at least two Global Admins to prevent a total lockout if one account is lost or compromised.
One of these should ideally be a "break-glass" emergency access account.
Limit Global Administrators to fewer than five:
Your score may decrease if you have five or more Global Admins.
Having too many increases the attack surface and "privilege creep".
[C]
Enabling "passwords never expire" (specifically, removing mandatory expiration) positively affects your Microsoft 365 Identity Secure Score. Microsoft considers this a best practice, as forcing regular password changes often leads to users choosing weaker, predictable passwords.
Reference:
https://learn.microsoft.com/en-us/entra/identity/monitoring-health/concept-identity-secure-score


NEW QUESTION # 82
Select the answer that correctly completes the sentence.

Answer:

Explanation:

Explanation:

The correct answer is adding a public DNS record . Microsoft documents that when you add a custom domain to Microsoft 365, you must first prove ownership of that domain before Microsoft 365 can use it for services such as Exchange Online, SharePoint, and user sign-ins. The standard verification method described by Microsoft is to add a DNS record at your domain registrar or DNS hosting provider. Microsoft commonly uses a TXT record for verification, although in some cases an MX record can also be used depending on the setup flow. This is why "adding a public DNS record" is the right completion for the sentence.
The other choices are not the standard Microsoft 365 domain verification process. Microsoft's admin guidance does not use confirming your business address , uploading a certificate , or uploading a webpage as the normal method for proving ownership of a domain in Microsoft 365. Domain verification is specifically tied to DNS because DNS is the authoritative public system used to prove control over the domain name.


NEW QUESTION # 83
Your organization has a Microsoft 365 subscription.
You need to review the impact of a recent phishing incident that targeted email users.
What should you use?

Answer: C

Explanation:
The correct answer is A. the Microsoft Defender portal . Microsoft documents that phishing investigation and analysis for email threats is handled in Microsoft Defender for Office 365 through the Microsoft Defender portal . Microsoft's phishing investigation guidance and email security reporting both point admins to Defender capabilities such as Threat Explorer , campaign views , and phish reports to understand the scope, affected users, and impact of phishing attacks.
The other options are not the primary investigation tool for this scenario. The Microsoft 365 admin center is mainly for tenant administration and usage reporting, not detailed phishing impact investigation. The Microsoft Entra admin center focuses on identity and access management, not email threat analysis. The Exchange admin center manages mail flow and Exchange settings, but Microsoft's current phishing investigation workflows are centered in the Microsoft Defender portal , where security analysts can review detections, remediation actions, and affected recipients.
So, to review the impact of a phishing incident that targeted email users, the Microsoft-documented choice is the Microsoft Defender portal .


NEW QUESTION # 84
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