Microsoft Microsoft 365 Copilot and Agent Administration Fundamentals AB-900 Exam Dumps: Updated Questions & Answers (July 2026)

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 .

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 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.

The correct answer is B. Data explorer. Microsoft Learn states that Data explorer in Microsoft Purview shows a current snapshot of items that have been classified as a sensitive information type in your organization. Microsoft’s sensitive information type documentation specifically lists examples such as social security numbers and credit card numbers, which means Data explorer is the appropriate portal feature for identifying files and emails that contain those data types. Data explorer is designed to help administrators see where sensitive data exists across supported Microsoft 365 locations.

The other options are less appropriate for this task. Information Protection reports focus more broadly on label and protection reporting. Information Protection policies are for configuring classification and protection behavior, not for finding existing files and emails containing SSNs or credit card numbers. Activity explorer is primarily used to review user and policy-related activities, such as label changes or DLP events, rather than to provide the direct sensitive-data inventory view requested here. Since the question asks to identify the files and emails containing specific sensitive information types, Microsoft’s documented answer is Data explorer.

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 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 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 A. the SharePoint admin center . Microsoft documents that the SharePoint admin center includes Data access governance reports and site-level sharing reports that help administrators identify where content is shared externally. Microsoft also documents that every standard Microsoft Teams team is connected to a SharePoint site for file storage and collaboration. Because Teams files and many sharing scenarios for teams are backed by SharePoint sites, the SharePoint admin center is the correct place to investigate which sites are shared externally, including Teams-connected SharePoint sites .

The other options are less suitable for this requirement. The Teams admin center is primarily for Teams policy, user, device, and workload administration, but it is not the main portal Microsoft documents for identifying externally shared site content. The Microsoft 365 admin center focuses on broad tenant administration and usage reporting, and the Microsoft Defender portal is for security investigation rather than SharePoint/Teams sharing governance. For identifying externally shared SharePoint sites and Teams-connected sites, Microsoft’s documented reporting path is the SharePoint admin center .

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 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.