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.
Your company, Contoso Ltd., has a Microsoft 365 E5 subscription with 500 users. The IT department recently discovered that some employees are sharing sensitive customer data via email with external parties. You need to implement a solution that automatically detects and prevents the sharing of credit card numbers and social security numbers in emails. The solution should notify the sender when a potential violation occurs and allow them to override the block by providing a business justification. The compliance team must be able to review these overrides. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a Microsoft Purview Data Loss Prevention (DLP) policy in the Microsoft Purview compliance portal.
Option B is correct. A Microsoft Purview Data Loss Prevention (DLP) policy can be configured to detect sensitive info types like credit card numbers and SSNs, with actions to block and notify the sender with an override option. Option A (Exchange mail flow rules) is less flexible and doesn't provide the override with justification. Option C (sensitivity labels) is for classification, not blocking. Option D (Microsoft Defender for Office 365) focuses on threats, not data protection.
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.
✗
Enable Microsoft Defender for Office 365 Safe Attachments and Safe Links.
Why it's wrong here
Defender for Office 365 protects against malicious content, not data leakage.
✓
Create a Microsoft Purview Data Loss Prevention (DLP) policy in the Microsoft Purview compliance portal.
Why this is correct
DLP policies can detect sensitive data, block transmission, notify users, and allow overrides with justification.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a sensitivity label with auto-labeling for emails containing sensitive data.
Why it's wrong here
Sensitivity labels classify data but do not block sharing.
✗
Create an Exchange mail flow rule to block emails containing sensitive data and send a non-delivery report.
Why it's wrong here
Mail flow rules can block but do not provide an override with justification.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-900 question in full detail.
Identify which MS-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: Create a Microsoft Purview Data Loss Prevention (DLP) policy in the Microsoft Purview compliance portal. — Option B is correct. A Microsoft Purview Data Loss Prevention (DLP) policy can be configured to detect sensitive info types like credit card numbers and SSNs, with actions to block and notify the sender with an override option. Option A (Exchange mail flow rules) is less flexible and doesn't provide the override with justification. Option C (sensitivity labels) is for classification, not blocking. Option D (Microsoft Defender for Office 365) focuses on threats, not data protection.
What should I do if I get this MS-900 question wrong?
Identify which MS-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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