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 multinational corporation needs to ensure that all emails containing a customer's passport number are automatically blocked from being sent externally. Additionally, the sending user should receive a policy tip explaining the block. 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
✓
Data Loss Prevention (DLP) policies
Data Loss Prevention (DLP) policies in Microsoft Purview are specifically designed to detect sensitive information, such as passport numbers, in emails and automatically block external transmission while displaying a policy tip to the user. This matches the requirement exactly, as DLP can inspect email content for sensitive data types and enforce actions like blocking and notifying the sender.
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.
✗
Sensitivity labels
Why it's wrong here
Sensitivity labels classify and protect documents but do not block emails from being sent based on content.
✓
Data Loss Prevention (DLP) policies
Why this is correct
DLP policies can detect passport numbers in emails and block them from being sent, with user notification via policy tips.
Related concept
Read the scenario before looking for a memorised answer.
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Conditional Access policies
Why it's wrong here
Conditional Access controls access to apps and data based on conditions like location or device, not email content.
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eDiscovery
Why it's wrong here
eDiscovery is used for legal hold and search of content, not for blocking email transmission in real time.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse sensitivity labels with DLP, assuming labels can block emails, but labels only apply protection after classification, whereas DLP actively inspects content and enforces rules like blocking and policy tips.
Detailed technical explanation
How to think about this question
DLP policies in Microsoft Purview leverage built-in sensitive information types (e.g., EU Passport Number) defined by regular expression patterns and checksums, and can apply actions via Exchange mail flow rules (transport rules) to block messages at the SMTP level. Policy tips are delivered through Outlook client-side integration using the Exchange Web Services (EWS) or the Outlook add-in, providing real-time feedback before the message is sent. In a multinational context, DLP policies can be scoped to specific users, groups, or locations, and can include multiple conditions like sender domain or recipient domain to fine-tune blocking behavior.
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: Data Loss Prevention (DLP) policies — Data Loss Prevention (DLP) policies in Microsoft Purview are specifically designed to detect sensitive information, such as passport numbers, in emails and automatically block external transmission while displaying a policy tip to the user. This matches the requirement exactly, as DLP can inspect email content for sensitive data types and enforce actions like blocking and notifying the sender.
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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