Question 885 of 985

Describe security, compliance, privacy, and trust in Microsoft 365 →hardMultiple ChoiceObjective-mapped

Comprehensive Security and Compliance Strategy with E5

This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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?

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: Option A is incorrect because it uses 'Copilot with default permissions', which is ambiguous and does not clearly guarantee that Copilot will only access data users already have permission to see, unlike Option D's 'Copilot's default permissions' which directly addresses the requirement. Additionally, the naming 'Microsoft Purview eDiscovery (Premium)' is not the standard format used in the exam; the correct service is simply 'eDiscovery (Premium)'.
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.

Full breakdown with real-world context →

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 correct because it directly addresses all requirements: Microsoft Purview Message Encryption encrypts emails in transit and at rest; Conditional Access with device compliance restricts SharePoint access to finance employees on compliant devices; Microsoft Purview Insider Risk Management detects and remediates data exfiltration; eDiscovery (Premium) enables GDPR DSAR responses within 30 days; and Copilot's default permissions ensure least privilege access. Option A is incorrect because although it includes similar components, it uses 'Microsoft Purview eDiscovery (Premium)' which is an outdated or incorrect naming (the service is simply eDiscovery (Premium) or Microsoft Purview eDiscovery Premium), and 'Copilot with default permissions' could imply that default settings might change, whereas D specifies 'default permissions' as a fixed policy. Option B fails because Azure Information Protection for email is not as robust as Message Encryption, Privileged Identity Management does not enforce device compliance, and Sentinel is for security monitoring, not insider threat detection. Option C is wrong because Microsoft Intune device compliance alone does not integrate with Conditional Access for SharePoint, and retention policies are for data lifecycle management, not DSARs which require eDiscovery.

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
Option A is incorrect because it uses 'Copilot with default permissions', which is ambiguous and does not clearly guarantee that Copilot will only access data users already have permission to see, unlike Option D's 'Copilot's default permissions' which directly addresses the requirement. Additionally, the naming 'Microsoft Purview eDiscovery (Premium)' is not the standard format used in the exam; the correct service is simply 'eDiscovery (Premium)'.
✗
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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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 correct because it directly addresses all requirements: Microsoft Purview Message Encryption encrypts emails in transit and at rest; Conditional Access with device compliance restricts SharePoint access to finance employees on compliant devices; Microsoft Purview Insider Risk Management detects and remediates data exfiltration; eDiscovery (Premium) enables GDPR DSAR responses within 30 days; and Copilot's default permissions ensure least privilege access. Option A is incorrect because although it includes similar components, it uses 'Microsoft Purview eDiscovery (Premium)' which is an outdated or incorrect naming (the service is simply eDiscovery (Premium) or Microsoft Purview eDiscovery Premium), and 'Copilot with default permissions' could imply that default settings might change, whereas D specifies 'default permissions' as a fixed policy. Option B fails because Azure Information Protection for email is not as robust as Message Encryption, Privileged Identity Management does not enforce device compliance, and Sentinel is for security monitoring, not insider threat detection. Option C is wrong because Microsoft Intune device compliance alone does not integrate with Conditional Access for SharePoint, and retention policies are for data lifecycle management, not DSARs which require eDiscovery.

What should I do if I get this MS-900 question wrong?

What is the key concept behind this question?

Authentication checks who the user is.

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