Microsoft AB-900 Exam Dumps

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.

The correct answers are A and D because both tasks are supported directly in the Exchange admin center (EAC). Microsoft Learn states that administrators can manage mail flow rules in Exchange Online from the EAC under Mail flow > Rules, which includes creating and managing transport rules for organizational email handling. Microsoft Learn also states that administrators can create shared mailboxes in the EAC under Recipients > Mailboxes, where a shared mailbox can be added and then delegated to users.

Option B is incorrect because adding a custom domain is normally done in the Microsoft 365 admin center, specifically on the Domains page. Although Exchange can later work with accepted domains and related mail flow settings, the act of adding and verifying a custom domain is not an Exchange admin center task. Option C is incorrect because license assignment is handled through Microsoft 365 or Microsoft Entra administrative tools, not the Exchange admin center.

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 B and C. Microsoft documents that Identity Secure Score in Microsoft Entra is based on identity security recommendations, including recommendations such as ''Designate more than one Global Administrator'' and ''Do not expire passwords.'' Those recommendations directly map to the number of global administrators and whether passwords are set to never expire, so both factors affect the score.

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.