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 security administrator needs to ensure that all users accessing Microsoft 365 resources from unmanaged devices are prompted to sign in using multi-factor authentication (MFA) and are blocked from downloading sensitive files. Which conditional access policy should be configured?
Why wrong: This policy enforces MFA but does not differentiate based on device state, so it would apply even to managed devices.
B
Block access from unknown locations
Why wrong: This targets geographic locations, not device management status.
C
App protection policies
Why wrong: App protection policies apply to mobile apps and can prevent data leakage from those apps, but they do not control browser or desktop access or enforce MFA at sign-in.
D
Conditional Access policy with device compliance and session controls
This allows you to require MFA for unmanaged devices and apply session policies to block download of sensitive files, meeting both requirements.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Conditional Access policy with device compliance and session controls
Option D is correct because a Conditional Access policy with device compliance and session controls allows the administrator to require MFA for sign-ins from unmanaged devices and use session controls (e.g., Microsoft Defender for Cloud Apps session policies) to block downloading sensitive files. This policy targets specific conditions (unmanaged devices) and applies granular access controls, meeting both requirements precisely.
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.
✗
Require MFA for all users
Why it's wrong here
This policy enforces MFA but does not differentiate based on device state, so it would apply even to managed devices.
✗
Block access from unknown locations
Why it's wrong here
This targets geographic locations, not device management status.
✗
App protection policies
Why it's wrong here
App protection policies apply to mobile apps and can prevent data leakage from those apps, but they do not control browser or desktop access or enforce MFA at sign-in.
✓
Conditional Access policy with device compliance and session controls
Why this is correct
This allows you to require MFA for unmanaged devices and apply session policies to block download of sensitive files, meeting both requirements.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse App Protection Policies (MAM) with Conditional Access session controls, not realizing that MAM policies manage app-level data protection without controlling sign-in MFA or blocking downloads based on device compliance, while Conditional Access with session controls can enforce both conditions in a single policy.
Detailed technical explanation
How to think about this question
Conditional Access policies evaluate signals like device compliance (via Microsoft Intune) and session risk. The session control uses Microsoft Defender for Cloud Apps to enforce real-time restrictions, such as blocking download of sensitive files labeled with sensitivity labels (e.g., via Microsoft Purview Information Protection). This is achieved by configuring a session policy that intercepts the user's session and applies restrictions based on file metadata, not just device state.
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: Conditional Access policy with device compliance and session controls — Option D is correct because a Conditional Access policy with device compliance and session controls allows the administrator to require MFA for sign-ins from unmanaged devices and use session controls (e.g., Microsoft Defender for Cloud Apps session policies) to block downloading sensitive files. This policy targets specific conditions (unmanaged devices) and applies granular access controls, meeting both requirements precisely.
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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