AB-900 Microsoft 365 Copilot and Agent Administration Fundamentals Questions and Answers

The correct answer is C. Site lifecycle management . In the SharePoint admin center, Microsoft includes a Site ownership policy under Site lifecycle management that can identify sites with too few owners and drive remediation. Microsoft documents that this policy can detect sites with fewer than the required number of owners, notify site owners, and if the issue is not fixed, enforce an action such as making the site read-only . That directly matches the requirement that sites with fewer than two owners be marked as read-only when they are not remediated.

The other options do not fit this scenario. Site-level access restriction is about controlling who can access a site, not enforcing ownership-count governance. Data access governance reports help identify oversharing and permissions exposure, but they do not enforce a minimum-owner remediation policy that makes sites read-only. Block download policy for SharePoint and OneDrive is used to restrict downloading from unmanaged devices or similar access scenarios, not to handle insufficient site ownership. Therefore, the Microsoft-documented feature to configure is Site lifecycle management .

The correct answer is B. data loss prevention (DLP) policies . Microsoft Learn states that Microsoft Purview Data Loss Prevention helps organizations identify, monitor, and automatically protect sensitive information across Microsoft 365 locations such as Exchange, SharePoint, OneDrive, Teams, and devices . Microsoft specifically documents scenarios for preventing sensitive items from being shared with external users in SharePoint and OneDrive, and DLP policies can also block or restrict sharing based on sensitive information types, labels, or policy conditions. This is exactly the control used when the requirement is to stop users from sharing corporate financial data outside the organization.

Option A is incorrect because retention labels manage how long content is kept or deleted, not whether it can be shared externally. Option C is incorrect because role groups are used for permissions and administrative access delegation, not content-sharing prevention. Option D is incorrect because Insider Risk Management is designed to detect and investigate risky user behavior, not to directly block external sharing transactions in the way DLP policies do. For proactive enforcement of external-sharing restrictions on sensitive financial information, Microsoft’s documented solution is DLP policies .

a site member of

The correct answer is a site member of . In the exhibit, the Site members group for Site1 contains Everyone except external users with Edit permissions. Microsoft documents that “Everyone except external users” automatically includes all internal users and excludes external guests . Since User1 is a newly created user in the organization, User1 is an internal user and is therefore included in that built-in principal.

Because that built-in principal is placed in the Site members group, User1 inherits member-level access to the site. User1 is not a site owner, because the Site owners group contains only the Global Administrator entry shown in the exhibit. User1 is also not merely a visitor, because the Site visitors group is listed as None . Finally, User1 is not prevented from accessing the site, because the membership granted through Everyone except external users gives internal users access to the site according to the permissions assigned to that group.

The correct selections are No, Yes, Yes . Statement 1 is No because Microsoft documents tenant controls for web search on or off , but not a general Microsoft 365 Copilot setting to block only selected websites for normal Copilot responses. Microsoft also says it doesn’t recommend or support managing Copilot through selective URL or domain blocking at the network level. Website allow/block lists shown in Microsoft documentation apply to Researcher with Computer Use virtual-device settings, not to standard Microsoft 365 Copilot web grounding overall.

Statement 2 is Yes because Microsoft provides the Allow web search in Copilot policy in Cloud Policy service and in the Microsoft 365 admin center, which can disable web search for Microsoft 365 Copilot and Copilot Chat.

Statement 3 is Yes because Microsoft states that admins can block Researcher and Analyst , and agent governance includes a Block action. Microsoft also notes that for Researcher and Analyst, user scoping isn’t edited through the usual panel; availability is managed by blocking the selected agent at the tenant level.

The correct answer is D. a sensitivity label policy . In Microsoft Purview, creating a sensitivity label by itself does not make it available to users. Microsoft Learn states that after you create sensitivity labels, you must publish them by creating a label policy so that users and groups can see and apply those labels in Microsoft 365 apps and services. Publishing controls which labels are available and to whom they are shown. This is why a sensitivity label policy is required to ensure that users can apply Label1 to files.

The other options do not meet the requirement. Auto-labeling policies apply labels automatically when content matches conditions, but they are not the primary mechanism for simply making a label available for user selection. A trainable classifier is used to identify content categories, not to publish a label. A retention label policy publishes retention labels for records and lifecycle purposes, which is different from sensitivity labeling for classification and protection. Therefore, the correct Microsoft-documented method to let users apply Label1 to files is to publish it using a sensitivity label policy .

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 .

The correct answer is C. Insider Risk Management . Microsoft documents that Microsoft Purview Insider Risk Management helps organizations detect, investigate, and act on potentially risky internal activities, including data theft and data leakage . Microsoft specifically provides policy templates for departing users , describing scenarios where users who are leaving an organization might download files, print files, or copy data to personal cloud storage or messaging services near their resignation or end date. That matches this question exactly, where User1 is leaving in two weeks and you need to determine whether the user is exfiltrating data.

The other options do not fit. Communication Compliance is for reviewing risky communications, Data Security Posture Management focuses on broader data exposure posture, and Data Lifecycle Management is for retention and deletion. None of those is the Microsoft Purview solution specifically built to monitor suspicious user activity and data exfiltration risk for departing employees. Microsoft positions Insider Risk Management as the correct tool for this scenario.

The correct answer is B. the Microsoft 365 admin center . Microsoft documents that administrators assign product licenses to users from the Microsoft 365 admin center , including on the Active users page where you can open a user account and manage Licenses and apps . Microsoft also documents license assignment workflows there for both direct assignment and group-based licensing scenarios. That makes the Microsoft 365 admin center the standard administrative portal for giving a user access to Microsoft 365 services and features.

The other options are incorrect for this task. The Microsoft Purview portal is used for compliance, governance, data protection, eDiscovery, audit, and related Purview solutions, not for assigning Microsoft 365 product licenses. The Microsoft Teams admin center is used to manage Teams settings, policies, devices, voice, and collaboration features, but it is not the central portal for assigning tenant product licenses to users.

Therefore, when the requirement is simply to assign a license to a user in a Microsoft 365 subscription, Microsoft’s documented answer is the Microsoft 365 admin center .

The correct answer is D. the Microsoft 365 admin center . Microsoft Learn states that users with a Microsoft 365 Copilot license can use Copilot capabilities, and Microsoft specifically points administrators to the Microsoft 365 admin center and its setup guidance to assign the required licenses to users. Microsoft also documents that the Researcher and Analyst agents were deployed to existing users with Microsoft 365 Copilot licenses and that administrators govern these agents through the Microsoft 365 admin center .

The other portals are not the primary place for this task. Microsoft Entra admin center focuses on identity and access, Microsoft Purview focuses on compliance and governance, and Microsoft Defender focuses on security operations and threat protection. None of those is the main admin experience Microsoft documents for assigning Microsoft 365 Copilot access and managing the availability of Researcher and Analyst. Because the goal is to enable a user to use Microsoft 365 Copilot and its Microsoft-provided agents, the correct administrative tool is the Microsoft 365 admin center .

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 answers are A and D because Microsoft Entra Identity Secure Score is based on identity security recommendations, and Microsoft Learn specifically lists recommendations such as “Designate more than one Global Administrator” and “Do not expire passwords.” That means the number of global administrators in the tenant and whether password expiration is disabled directly influence the Identity Secure Score. Microsoft also notes that the score measures how closely an organization aligns with Microsoft’s recommended identity security best practices.

Option B is incorrect because SharePoint site permissions are related to SharePoint and Microsoft 365 workload permissions, not to the Entra identity-focused scoring model. Option C is incorrect because user location may be evaluated in Conditional Access and Zero Trust scenarios, but it is not itself listed as a direct Identity Secure Score factor in the Microsoft Entra recommendations referenced by Microsoft Learn. Identity Secure Score is driven by tracked identity recommendations and security configurations, not by simple geographic placement of users.

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

A Communication Compliance policy can detect inappropriate text in Microsoft Teams messages. Answer: Yes

A Communication Compliance policy can detect offensive language in Microsoft 365 Copilot prompts. Answer: Yes

A Communication Compliance policy can be used to retain email messages for 10 years. Answer: No

The correct selections are Yes, Yes, No . Microsoft documents that Microsoft Purview Communication Compliance can detect potentially inappropriate messages in supported communication channels, including Microsoft Teams and email . Microsoft also states that reviewers can investigate communications in Microsoft 365 Copilot and Microsoft 365 Copilot Chat , which means Communication Compliance policies can evaluate Copilot prompts and responses for risky or offensive content.

This makes statement 1 Yes , because inappropriate text in Teams messages is a standard Communication Compliance scenario. Statement 2 is also Yes , because Microsoft explicitly includes Microsoft 365 Copilot and Microsoft 365 Copilot Chat among the supported communication sources for policy review and investigation.

Statement 3 is No because retaining email for a fixed period such as 10 years is handled by Microsoft Purview Data Lifecycle Management through retention policies or retention labels, not by Communication Compliance. Communication Compliance is for monitoring and investigating risky communications, not for long-term retention enforcement.

The correct answer is C. a custom Microsoft 365 Copilot agent . Microsoft Learn explains that Agent Builder in Microsoft 365 Copilot lets you create agents with specific instructions , dedicated knowledge sources , and starter prompts . Starter prompts are designed to help users understand the most common supported scenarios, which directly matches the requirement to provide users with a list of common queries. Microsoft also documents that an agent can be grounded in selected SharePoint sites, folders, or files , allowing the response scope to be targeted to the HR policy content in Site1 rather than broad enterprise or web data.

The other options do not fit the requirement. Copilot in Word is document-focused and is not intended to create a reusable, shared query experience grounded only in one SharePoint source. Copilot notebooks group materials and chats, but they are not the right tool for publishing a guided HR policy assistant with starter prompts. Researcher is designed for broader, multi-step research using work data and web content, so it does not satisfy the requirement to keep answers grounded only in Site1.

The correct answer is Microsoft Defender XDR . Microsoft Learn defines Microsoft Defender XDR as a unified pre- and post-breach enterprise defense suite that natively coordinates detection, prevention, investigation, and response across endpoints, identities, email, and applications to provide integrated protection against sophisticated attacks. That wording matches the sentence in the question almost exactly, which makes this the clearly correct choice.

The other options do not fit that definition. Microsoft Entra Conditional Access is Microsoft’s Zero Trust policy engine used to evaluate signals and enforce access policies, not a cross-domain threat detection and response suite. Microsoft Entra ID Protection focuses on detecting and responding to identity risks such as risky sign-ins and risky users. Microsoft Purview is Microsoft’s portfolio for data governance, data security, and compliance. None of those products is described by Microsoft as coordinating detection, prevention, investigation, and response across endpoints, identities, email, and applications in the same integrated XDR manner. Therefore, the only answer that correctly completes the sentence is Microsoft Defender XDR .

time-bound role activation

The correct answer is time-bound role activation . Microsoft Learn explains that Microsoft Entra Privileged Identity Management (PIM) allows users to be made eligible for privileged roles and then activate those roles only when needed. Microsoft also states that once activated, the role is active for a preconfigured period of time , after which the privileged access expires automatically. This is the core just-in-time and time-limited access model that PIM is designed to provide. ( learn.microsoft.com )

The other options do not match Microsoft’s definition of PIM. It is not primarily described as providing restricted access to Microsoft 365 services , the lifecycle management of users , or the management of enterprise applications . Those areas relate more closely to other Microsoft Entra and Microsoft 365 governance capabilities. Microsoft specifically positions PIM as a service to manage, control, and monitor access to important resources by using eligible assignments , approval workflows , MFA if required , and temporary role activation . Therefore, the phrase that correctly completes the sentence is time-bound role activation . ( learn.microsoft.com )

The correct answer is A . Microsoft Learn defines Zero Trust as a security strategy built on the principles verify explicitly , use least privilege access , and assume breach . Microsoft also summarizes Zero Trust as a model that assumes breach and verifies every request , rather than trusting users, devices, or traffic simply because they originate from inside the corporate network. This is the key reason option A is correct. Under Zero Trust, every access request should be evaluated continuously using available signals such as identity, device state, location, service, and risk.

Option B is incorrect because improving user experience is not the defining principle of Zero Trust. Option C is incorrect because Zero Trust requires ongoing review and adjustment of permissions, especially through least privilege and risk-based access. Option D is incorrect because Zero Trust explicitly rejects implicit trust based on network location. Microsoft states that organizations should reduce reliance on the traditional idea that anything on the internal network is automatically safe or trustworthy.