AB-900 Exam Dumps - Microsoft 365 Copilot and Agent Administration Fundamentals

The correct answer is D. From the Finance site, configure permissions . Microsoft states that Microsoft 365 Copilot honors existing Microsoft 365 permissions and only grounds responses in content that the signed-in user is already allowed to access. That means if users are getting Finance-site content in Copilot responses, those users likely still have permission to that SharePoint content. The direct fix is to review and correct the site, library, folder, or file permissions on the Finance site so only the intended users retain access.

The other options do not directly solve this requirement. Information Barriers are designed for communication and collaboration segmentation scenarios, not for ordinary site-level oversharing remediation. A Defender data connector is unrelated to SharePoint permission enforcement. Conditional Access controls sign-in and session access conditions, but it does not selectively remove Copilot grounding from one SharePoint site for users who still have site permissions. Because Copilot uses SharePoint and Microsoft Graph permissions as its boundary, the Microsoft-documented corrective action is to fix the Finance site permissions .

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 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 .

The correct answer is B. using a custom agent that is grounded in work data . Microsoft Learn states that agents that access shared tenant data , such as SharePoint or Graph Connector content, are billed based on metered consumption . Microsoft also describes pay-as-you-go for Microsoft 365 as applying to agents in Microsoft 365 Copilot Chat , where organizations pay only for the messages used instead of assigning a full Microsoft 365 Copilot license. That is exactly the scenario described in option B: a custom agent grounded in work data.

The other options are not the intended pay-as-you-go scenario. A Teams meeting recap and Copilot in Word are standard Microsoft 365 Copilot application experiences tied to licensed Copilot functionality, not metered agent consumption. Researcher is an advanced Microsoft 365 Copilot agent available as part of Microsoft 365 Copilot capabilities, not the documented example of pay-as-you-go replacing a Copilot license. Microsoft’s pay-as-you-go guidance centers on agent-based usage , especially agents grounded in organizational work data.

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 D. the Analyst agent in Microsoft 365 Copilot . Microsoft Learn training for Microsoft 365 Copilot specifically distinguishes the Analyst agent as the tool for gathering insights from data and enhancing data presentations. Microsoft’s guidance also notes in the Researcher FAQ that when the task is spreadsheet-related , Analyst agent is better suited for Microsoft Excel related tasks . This makes Analyst the best choice for a quarterly sales reporting scenario that involves detecting performance trends , surfacing anomalies , and producing visual insights from multiple datasets.

The other options are less suitable. Researcher is intended for complex multi-step research and source-cited reports across web and work content, not specialized data analysis across files. Microsoft 365 Copilot Search is for finding information, not for deep quantitative analysis and anomaly summarization. Copilot in Excel is powerful for workbook-level analysis, but the question emphasizes broader insight generation across multiple files and asks for the best Copilot experience for trends, visuals, and anomaly summaries. Microsoft positions Analyst as the dedicated agent for that kind of data-analysis workflow.

The correct answer is Require multifactor authentication for administrative roles . In the exhibit, each recommendation shows its available Secure Score points . The listed values are 1/1 for Use least privileged administrative roles , 8/8 for Do not expire passwords , 0.73/8 for Enable policy to block legacy authentication , and 0/10 for Require multifactor authentication for administrative roles . Because 10 points is the highest value among the options shown, resolving that recommendation would improve the Identity Secure Score the most.

Microsoft Learn explains that Identity Secure Score in Microsoft Entra is based on Microsoft security recommendations, and each recommendation contributes a specific number of points depending on its impact and implementation state. Recommendations related to administrator protection are especially important because privileged accounts are high-value attack targets. Microsoft also emphasizes multifactor authentication for admin roles as a core identity security best practice. Therefore, both from the screenshot and from Microsoft’s identity guidance, the recommendation with the greatest score improvement is Require multifactor authentication for administrative roles .

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 .