- A
Enable Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, Microsoft Purview eDiscovery (Premium), and Copilot with default permissions.
Why wrong: This is a duplicate of B but with different wording; however B is already correct.
- B
Deploy Azure Information Protection for email, Microsoft Entra ID Privileged Identity Management, Microsoft Sentinel, retention policies, and Copilot settings.
Why wrong: Azure Information Protection is deprecated; PIM is for roles; Sentinel is not for DSARs.
- C
Implement Microsoft Purview Message Encryption, Microsoft Intune device compliance, Microsoft Defender for Cloud Apps, retention policies, and Copilot configuration.
Why wrong: Intune device compliance alone does not enforce Conditional Access; retention policies do not help with DSARs.
- D
Use Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, eDiscovery (Premium), and Copilot's default permissions.
Covers all requirements correctly.
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. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Contoso Ltd. is a multinational corporation with 10,000 employees. They have recently adopted Microsoft 365 E5 and want to implement a comprehensive security and compliance strategy. Their requirements include: 1) All sensitive emails must be encrypted in transit and at rest. 2) Access to SharePoint sites containing financial data must be restricted to employees from the finance department only, and only from compliant devices. 3) They need to detect and remediate insider threats involving data exfiltration via email and cloud storage. 4) They must comply with GDPR and be able to respond to DSARs within 30 days. 5) They want to use Microsoft 365 Copilot but ensure that Copilot only accesses data that users already have permission to see. Which combination of Microsoft 365 solutions should Contoso implement?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, eDiscovery (Premium), and Copilot's default permissions.
Option D is the best answer because it covers all requirements: Microsoft Purview Message Encryption (email encryption), Conditional Access with device compliance (restrict access), Insider Risk Management (insider threats), eDiscovery (DSARs), and Copilot's built-in permissions (least privilege). Option A lacks device compliance and proper insider threat detection. Option B uses Intune app protection instead of Conditional Access, which is less specific for SharePoint access. Option C uses retention policies for DSARs, which is incorrect.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, Microsoft Purview eDiscovery (Premium), and Copilot with default permissions.
Why it's wrong here
This is a duplicate of B but with different wording; however B is already correct.
- ✗
Deploy Azure Information Protection for email, Microsoft Entra ID Privileged Identity Management, Microsoft Sentinel, retention policies, and Copilot settings.
Why it's wrong here
Azure Information Protection is deprecated; PIM is for roles; Sentinel is not for DSARs.
- ✗
Implement Microsoft Purview Message Encryption, Microsoft Intune device compliance, Microsoft Defender for Cloud Apps, retention policies, and Copilot configuration.
Why it's wrong here
Intune device compliance alone does not enforce Conditional Access; retention policies do not help with DSARs.
- ✓
Use Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, eDiscovery (Premium), and Copilot's default permissions.
Why this is correct
Covers all requirements correctly.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related MS-900 questions on access control and AAA configuration.
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Describe security, compliance, privacy, and trust in Microsoft 365 — study guide chapter
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FAQ
Questions learners often ask
What does this MS-900 question test?
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Use Microsoft Purview Message Encryption, Conditional Access with device compliance, Microsoft Purview Insider Risk Management, eDiscovery (Premium), and Copilot's default permissions. — Option D is the best answer because it covers all requirements: Microsoft Purview Message Encryption (email encryption), Conditional Access with device compliance (restrict access), Insider Risk Management (insider threats), eDiscovery (DSARs), and Copilot's built-in permissions (least privilege). Option A lacks device compliance and proper insider threat detection. Option B uses Intune app protection instead of Conditional Access, which is less specific for SharePoint access. Option C uses retention policies for DSARs, which is incorrect.
What should I do if I get this MS-900 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related MS-900 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 21, 2026
This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.
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