AB-900 Questions and Answers

In Microsoft 365 Copilot, you should use the Researcher agent to perform multi-step reasoning over unstructured data.

The correct answer is the Researcher agent . Microsoft describes Researcher in Microsoft 365 Copilot as an agent for complex, multi-step research that can reason across information sources and synthesize findings into structured outputs. That aligns with the phrase multi-step reasoning in the question. Microsoft’s guidance also contrasts Researcher with Analyst , which is aimed more at data analysis and spreadsheet-oriented tasks.

The other options are less suitable. Chat is general-purpose and not the specialized tool Microsoft positions for deeper multi-step research workflows. A notebook is used to organize materials and chats, not as the main reasoning engine for this scenario. The Analyst agent is better suited to structured data analysis, trends, and calculations rather than broad reasoning over unstructured data such as documents, notes, and mixed content. Based on Microsoft’s product positioning, the best fit for multi-step reasoning over unstructured information is the Researcher agent .

The correct answer is Connectors . Microsoft documents that Microsoft 365 Copilot connectors are used to bring external, line-of-business data into Microsoft 365 Copilot so users can search, reason over, and act on content from non-Microsoft systems. Microsoft also states that admins must enable and configure Copilot connectors in the Microsoft 365 admin center , and once configured, those connectors can be selected as knowledge sources for custom agents. This directly matches the requirement to let users use an external system as a knowledge source for custom Microsoft 365 Copilot agents.

This is why the hotspot in the Copilot area should be set to Connectors , not Overview, Agents, Search, Billing & usage, or Settings. Overview provides status information, Agents is for agent management, Search is for Microsoft Search experiences, and Billing & usage is for metering and consumption tracking. The specific admin feature that enables external enterprise data sources for agent grounding is Connectors . Microsoft further explains that configured connectors can expose external knowledge securely and respect source-level permissions when used in agent scenarios.

The correct selections are Yes, Yes, Yes . For statement 1, Microsoft Support explains that if you are not a site owner, you might still be able to invite other people to the site , although the invitation can generate an access request that a site owner approves or declines. Microsoft also states that site users have the opportunity to invite other people to collaborate on sites , unless that feature is disabled. That makes the statement true.

For statement 2, Microsoft Learn states that in SharePoint you can give people permissions to a site by adding individual users, security groups, or Microsoft 365 groups to one of the three SharePoint groups, including the Members group. That directly supports the statement.

For statement 3, Microsoft documents that site ownership and membership can be managed by adding or removing owners, members, site owners, site members, and site visitors . For group-connected sites, Microsoft also documents that owners can manage group ownership and remove owner status. Therefore, a site owner can remove another site owner, provided at least one owner remains.

Communications Compliance uses OCR (optical character recognition) and machine learning to detect offensive or risky text inside images , including those in SharePoint and OneDrive.

By default, Communications Compliance pseudonymizes user identities to reduce investigator bias. Admins can later deanonymize if needed.

It does not add disclaimers. It silently monitors communications and flags policy violations; disclaimers are handled by Exchange transport rules, not Communications Compliance.

Microsoft Defender for Office 365 provides protection from phishing and malware attacks. Answer: Yes

Microsoft Defender for Identity monitors identities in Active Directory domains. Answer: Yes

Microsoft Defender Vulnerability Management provides protection for software as a service (SaaS) applications. Answer: No

The correct selections are Yes, Yes, No . Microsoft documents that Microsoft Defender for Office 365 protects email and collaboration workloads from threats such as phishing and malware , including zero-day malware and business email compromise scenarios. That makes statement 1 Yes .

Statement 2 is also Yes because Microsoft states that Microsoft Defender for Identity monitors identity signals from on-premises Active Directory and related identity infrastructure to detect suspicious activity and identity-based attacks. Microsoft further describes monitoring information generated from your organization’s Active Directory, network, and event activities.

Statement 3 is No because Microsoft Defender Vulnerability Management is focused on discovering and prioritizing vulnerabilities across devices and assets such as Windows, macOS, Linux, mobile platforms, and network devices. Microsoft’s SaaS application protection offering is Microsoft Defender for Cloud Apps , not Defender Vulnerability Management.

The correct answer is A. Microsoft Entra ID Protection . Microsoft Learn explains that Microsoft Entra ID Protection detects sign-in risk and user risk and can work with Conditional Access risk policies to automatically respond when suspicious authentication activity is identified. Microsoft documents specifically state that organizations can configure sign-in risk policies and user risk policies to automate responses such as blocking access , requiring multifactor authentication , or forcing password changes when risky activity is detected. Microsoft also notes that some very high-confidence risky sign-ins are automatically blocked by built-in protections.

The other options do not match this function. Microsoft Defender for Office 365 focuses on email, collaboration, and threat protection for tools like Exchange Online and Teams, not sign-in risk blocking. Microsoft Entra Privileged Identity Management (PIM) manages privileged role activation and governance, not risky sign-in detection. Microsoft Defender for Identity detects identity-related threats in hybrid identity environments, but the Microsoft feature used to automatically block risky sign-ins is Microsoft Entra ID Protection .

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 .

The correct answer is C. the Microsoft 365 admin center . Microsoft Learn documents a specific Copilot image generation setting in the Microsoft 365 admin center under Copilot > Settings > Copilot actions > Copilot image generation . Microsoft states that when this scenario is allowed, users can ask Copilot to create, design, and edit images. When it is not allowed, Copilot does not generate images and instead responds with stock or brand images. This directly matches the requirement to prevent users from generating images by using Copilot.

The other options are incorrect because Microsoft does not document this control as being managed from Defender, Purview, or Entra for this scenario. Microsoft also separately notes that organizations can control access to Designer image generation through policy, but the admin experience for managing the Microsoft 365 Copilot scenario itself is explicitly surfaced in the Microsoft 365 admin center . Therefore, for an exam question focused on where an admin should go to disable image generation in Copilot, the best and documented answer is the Microsoft 365 admin center .

To use Microsoft 365 Copilot Chat to reason over web data, you need a Microsoft 365 Copilot license. Answer: No

To use the Researcher agent in Microsoft 365 Copilot, you need a Microsoft 365 Copilot license. Answer: Yes

To add an agent in the Microsoft 365 Copilot app, you need a Microsoft 365 Copilot license. Answer: No

The correct selections are No, Yes, No . Microsoft documents that Microsoft 365 Copilot Chat is available at no additional cost for eligible Entra account users with qualifying Microsoft 365 licenses, and that it includes secure AI chat grounded in the web . That means a separate Microsoft 365 Copilot add-on license is not required just to use Copilot Chat over web data.

Statement 2 is Yes because Microsoft states that Researcher is part of the core default experience for Microsoft 365 Copilot licensed users . In other words, access to the Researcher agent requires the Microsoft 365 Copilot license.

Statement 3 is No because Microsoft documents that users can access agents and create them in the Microsoft 365 Copilot app through Copilot Chat, and Microsoft 365 service descriptions state that web-grounded agents are available at no extra cost for commercial users with a qualifying Microsoft 365 license. A Copilot add-on license is required for certain advanced capabilities, but not simply to add an agent in the app in general.

The correct answer is Activate the role. Microsoft Learn states that in Microsoft Entra Privileged Identity Management (PIM), when a user is made eligible for a Microsoft Entra role, they do not immediately have the permissions of that role. Microsoft specifically explains that eligible users must activate the role assignment before using the role. Only after activation does the user receive the permissions associated with that role for the approved time period.

That means if you are only eligible for the User Administrator role, you cannot create user accounts until you activate that role in PIM. The other options are incorrect because installing Microsoft Authenticator, requesting a license, or updating location information are not the universal prerequisite stated by Microsoft for using an eligible PIM role. Multifactor authentication can be required during activation depending on policy, but the core required action is still to activate the role first. Microsoft also notes that activation can involve entering a reason, selecting a duration, and completing any required approval or MFA steps.

The correct answer is C because Microsoft explains that authorization is the process of determining whether an authenticated identity is allowed to access a resource . Microsoft Learn distinguishes authorization from authentication by stating that authentication proves who you are, while authorization decides what you can access or do after identity has been established. In Microsoft 365 and the Microsoft identity platform, authorization commonly involves permissions, scopes, roles, and consent that control access to data and services such as Microsoft Graph, Exchange, SharePoint, or Teams.

Option A is incorrect because it refers more to external identity validation or federation concepts, not authorization itself. Option B describes authentication , not authorization, since it is about verifying identity claims. Option D describes a control such as multifactor authentication or Conditional Access requirements, which can happen before access is granted, but that still is not the definition of authorization. Authorization begins after identity verification and focuses on whether the identity has the right permissions for the requested resource.

The correct selections are No, Yes, No . Microsoft defines Zero Trust as a security strategy and explicitly states that it isn’t a product or a service . Instead, it is an approach based on principles such as verify explicitly , use least privilege access , and assume breach . That makes statement 2 true.

Statement 1 is false because Zero Trust does not require an Azure subscription. Microsoft provides Zero Trust guidance across many environments, including Microsoft 365, Copilot, Azure, and hybrid scenarios. It is a strategy that can be implemented with different technologies and is not dependent on owning Azure specifically.

Statement 3 is also false because there is no single switch in the Microsoft 365 admin center to “enable Zero Trust” for an organization. Microsoft’s documentation presents Zero Trust as a set of policies, configurations, and deployment steps across services such as Microsoft Entra, Intune, Defender, and Microsoft 365 workloads, not as one admin-center toggle.

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You can use a Microsoft Entra security group to assign permissions to Microsoft Entra ID resources. Answer: Yes

You can use a Microsoft Entra security group to assign Microsoft 365 licenses. Answer: Yes

You can use a Microsoft Entra security group to assign permissions to Microsoft Exchange mailboxes. Answer: No

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 .

The correct answer is D. Data Lifecycle Management . Microsoft Learn states that Microsoft Purview retention policies and retention labels, managed under Data Lifecycle Management , support three core outcomes: retain-only , delete-only , and retain and then delete . The requirement in this question is exact: keep email for seven years and then permanently delete it. That is a textbook retain and then delete retention configuration, which Microsoft documents as part of Purview’s retention capabilities. Microsoft also recommends using Microsoft 365 retention policies and labels for retaining and deleting emails rather than relying on older Exchange-only approaches in most modern compliance scenarios.

The other options do not meet the requirement. Information Protection focuses on labeling and protecting sensitive information. Insider Risk Management is used to detect and investigate risky user behavior. Data Loss Prevention helps prevent inappropriate sharing or exfiltration of sensitive data. None of those are designed to enforce a timed seven-year retention period followed by automatic permanent deletion. The Microsoft Purview solution explicitly built for that lifecycle requirement is Data Lifecycle Management .

You can use the eDiscovery Microsoft Purview solution to find all the content that relates to the term “Project Falcon” in the emails exchanged by two users.

The correct answer is eDiscovery . Microsoft documents that Microsoft Purview eDiscovery is used to search for content in Microsoft 365 data sources that is relevant to an investigation, legal matter, or internal review. Microsoft specifically states that eDiscovery search can find email messages, documents, instant messages, and other content across Microsoft 365 locations, including Exchange Online mailboxes . This makes it the correct solution for locating content related to a keyword or phrase such as “Project Falcon” in emails exchanged between specific users.

This is different from other Purview solutions such as Communication Compliance, which is designed to monitor risky or inappropriate communications, or Data Lifecycle Management, which is for retention and deletion. The requirement here is targeted search and retrieval of content connected to a specific term in user email communications, which is exactly what eDiscovery is designed to do. Microsoft also notes that eDiscovery supports keyword queries and search conditions , which further aligns with this scenario.