Free Practice Questions for Microsoft AB-900 Exam

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, 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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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 setting is Restricted site access configured with Group1 . Microsoft Learn states that you can restrict access to a SharePoint site by specifying Microsoft Entra security groups or Microsoft 365 groups as the Restricted Access Control group . Microsoft also states that, after the policy is applied, a user can access the site content only if the user both already has permission to the site or content and is a member of the specified restricted access group. This exactly matches the requirement: users who currently have access to Site1 must also be members of Group1 to continue accessing the content.

The Restrict content from Microsoft 365 Copilot setting is unrelated to direct user access to the SharePoint site. That control limits whether Copilot can use site content, but it does not block users from opening the site themselves. Microsoft separately explains that Restricted SharePoint Search and Copilot restrictions are not the same as changing actual SharePoint permissions or access boundaries. So for this scenario, keep the Copilot restriction Off and configure Restricted site access with Group1 .

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 A. Data access governance in the SharePoint admin center . Microsoft Learn documents Data access governance reports in the SharePoint admin center as the reporting solution used to understand data exposure, including permission structure and sharing link activity . Microsoft specifically states that the site permissions snapshot report provides visibility across SharePoint and OneDrive sites , helping administrators understand current permissions exposure, and that separate reports are created for SharePoint and OneDrive . Microsoft also documents sharing links activity reports as part of Data access governance for monitoring link-sharing activity, and notes that OneDrive support is available through PowerShell for those reports. Together, this is the Microsoft reporting capability aligned with permissions and active sharing links for OneDrive content.

The other options do not fit this requirement. Microsoft 365 admin center reports focus mainly on usage and activity reporting, not detailed permissions and sharing-link governance. Defender Audit is for security investigation activity, and Purview eDiscovery is for legal and investigative content search, not for generating OneDrive permissions and sharing-link governance reports. Therefore, the best Microsoft-documented answer is Data access governance in the SharePoint admin center .

The correct answer is accountability . Microsoft’s Responsible AI framework is built on six principles: fairness , reliability and safety , privacy and security , inclusiveness , transparency , and accountability . Microsoft describes accountability as the principle that people who design and deploy AI systems must remain responsible for how those systems operate and for the impacts they create. A key part of that principle is ensuring there is human oversight so humans remain in control of decisions and system behavior.

The other options do not match the wording in the sentence as closely. Transparency focuses on helping people understand how AI systems work and why they produce certain outcomes. Privacy and security is about protecting data and securing systems. Reliability and safety is about dependable and safe operation. Inclusiveness is about designing AI that empowers and includes people broadly. The principle tied to oversight, responsibility, and keeping humans in control is accountability .

provide control over how users can access cloud apps.

The correct answer is provide control over how users can access cloud apps . Microsoft Learn defines Microsoft Entra Conditional Access as the Zero Trust policy engine that uses if-then logic to make access decisions. Microsoft states that Conditional Access policies determine who can access resources, what resources they can access, and under what conditions . These policies can require actions such as multifactor authentication, compliant devices, or other controls before allowing access to applications and services like Microsoft 365. That means Conditional Access is specifically used to control how users access cloud apps .

The other options are incorrect. Conditional Access policies are not configured by using the Microsoft Defender portal ; they are managed in the Microsoft Entra admin center . They are also not applied only to on-premises resources , because Microsoft documents Conditional Access primarily for cloud identities, cloud apps, and cloud-connected resources. Finally, Conditional Access does not require a Microsoft Exchange mailbox. It can be applied broadly across many Microsoft and third-party cloud applications integrated with Microsoft Entra.

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 selections are No, No, Yes . Microsoft states that for Microsoft 365 Copilot , customer prompts, responses, and Microsoft Graph grounding data aren’t used to train foundation models . Microsoft also explains that Copilot processes organizational data within the service boundary and applies the same commitments that protect Microsoft 365 customer data. That makes statements 1 and 2 No . Microsoft further documents that Microsoft 365 Copilot grounds responses using Microsoft Graph and only surfaces data that the user is permitted to access , so it respects existing identity, access, and permission controls in the tenant. That makes statement 3 Yes .

This behavior is a core part of Copilot’s enterprise design. Microsoft describes Copilot as inheriting your organization’s existing Microsoft 365 permissions model, including access controls on content in SharePoint, OneDrive, Exchange, Teams, and other Microsoft 365 services. So Copilot does not grant new access; it works within the permissions already assigned to the signed-in user.