MS-900 Practice Question: Describe security, compliance, privacy, and trust in Microsoft 365
This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A legal firm needs to automatically encrypt and apply access restrictions to all documents that contain case numbers considered highly confidential. The protection must remain enforced even if the document is emailed to external parties or saved to a personal device. Which Microsoft Purview solution should be configured?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sensitivity Labels with encryption
Sensitivity Labels with encryption are the correct solution because they allow the legal firm to classify documents containing confidential case numbers and enforce persistent protection (encryption and access restrictions) that travels with the document, even when emailed externally or saved to a personal device. This is achieved by applying Azure Rights Management (Azure RMS) encryption directly to the file, ensuring the protection is embedded in the document itself, not just at the network or service boundary.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Data Loss Prevention (DLP)
Why it's wrong here
DLP policies detect and block sensitive data sharing but do not automatically encrypt documents or apply persistent protection.
✓
Sensitivity Labels with encryption
Why this is correct
Sensitivity labels can apply automatic encryption and usage restrictions that follow the document, meeting the requirement for persistent protection.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Purview Audit
Why it's wrong here
Audit logs user and admin activities but does not protect or encrypt documents.
✗
Customer Lockbox
Why it's wrong here
Customer Lockbox is for approving Microsoft support access to data, not for document encryption or classification.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Data Loss Prevention (DLP) with persistent protection, mistakenly thinking DLP can encrypt documents and enforce access controls after they leave the organization, when in fact DLP only monitors and blocks data in transit or at rest within the tenant, not after it is shared externally.
Detailed technical explanation
How to think about this question
Sensitivity labels with encryption leverage Azure Rights Management (Azure RMS) to apply a policy that includes encryption, usage rights (e.g., view-only, no copy/print), and expiration. The encryption is implemented using AES-256 and the policy is enforced by the Microsoft Purview Information Protection client, which integrates with Office apps and the Microsoft 365 unified labeling client. A subtle behavior is that if a document is saved to a personal device without the Azure RMS client, the file remains encrypted and unreadable, ensuring protection persists even outside the corporate network.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-900 question in full detail.
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Sensitivity Labels with encryption — Sensitivity Labels with encryption are the correct solution because they allow the legal firm to classify documents containing confidential case numbers and enforce persistent protection (encryption and access restrictions) that travels with the document, even when emailed externally or saved to a personal device. This is achieved by applying Azure Rights Management (Azure RMS) encryption directly to the file, ensuring the protection is embedded in the document itself, not just at the network or service boundary.
What should I do if I get this MS-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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