- A
Microsoft Purview Data Loss Prevention (DLP) policy
DLP policies can scan email content for sensitive information (e.g., credit card numbers), block the message from being sent, and display a customizable policy tip to educate the user. This matches the requirement exactly.
- B
Microsoft Purview Information Barriers
Why wrong: Information barriers are used to prevent communication between certain groups (e.g., legal and finance) to avoid conflicts of interest. They do not inspect content for sensitive data or provide policy tips. DLP is the correct solution.
- C
Microsoft Purview Records Management
Why wrong: Records management focuses on labeling content as records and applying retention/deletion policies. It does not actively block content sharing based on sensitive data. DLP policies are used for prevention.
- D
Microsoft Purview Communication Compliance
Why wrong: Communication Compliance helps organizations detect inappropriate messages (e.g., harassment) for review. It does not block messages in real-time or show policy tips. DLP is designed for real-time prevention of data leakage.
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 compliance officer wants to proactively prevent users from sending emails that contain sensitive personal data (e.g., credit card numbers) to external recipients. When a user attempts to send such an email, they should see a policy tip explaining the restriction and be blocked from sending. Which Microsoft Purview feature should be configured?
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
Microsoft Purview Data Loss Prevention (DLP) policy
Microsoft Purview Data Loss Prevention (DLP) policy is the correct feature because it is specifically designed to detect sensitive data (e.g., credit card numbers) in transit and enforce actions such as showing a policy tip and blocking the email. DLP policies use sensitive information types (e.g., Credit Card Number) and conditions to inspect email content in Exchange Online, triggering a block action with an end-user notification when a match occurs.
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.
- ✓
Microsoft Purview Data Loss Prevention (DLP) policy
Why this is correct
DLP policies can scan email content for sensitive information (e.g., credit card numbers), block the message from being sent, and display a customizable policy tip to educate the user. This matches the requirement exactly.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Microsoft Purview Information Barriers
Why it's wrong here
Information barriers are used to prevent communication between certain groups (e.g., legal and finance) to avoid conflicts of interest. They do not inspect content for sensitive data or provide policy tips. DLP is the correct solution.
- ✗
Microsoft Purview Records Management
Why it's wrong here
Records management focuses on labeling content as records and applying retention/deletion policies. It does not actively block content sharing based on sensitive data. DLP policies are used for prevention.
- ✗
Microsoft Purview Communication Compliance
Why it's wrong here
Communication Compliance helps organizations detect inappropriate messages (e.g., harassment) for review. It does not block messages in real-time or show policy tips. DLP is designed for real-time prevention of data leakage.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Communication Compliance (which reviews messages after they are sent) with DLP (which proactively blocks messages in transit), leading them to select Communication Compliance when the question explicitly requires proactive blocking with a policy tip.
Trap categories for this question
Command / output trap
Communication Compliance helps organizations detect inappropriate messages (e.g., harassment) for review. It does not block messages in real-time or show policy tips. DLP is designed for real-time prevention of data leakage.
Detailed technical explanation
How to think about this question
Under the hood, a DLP policy in Exchange Online uses transport rules and the Exchange Online Protection (EOP) pipeline to inspect email content and attachments against predefined or custom sensitive information types (e.g., regex patterns for credit card numbers with Luhn check). When a match occurs, the policy can enforce a 'Block' action that prevents message delivery and displays a policy tip via Outlook or Outlook on the web, leveraging the DLP agent's integration with the transport pipeline. A real-world scenario is a healthcare organization using DLP to block emails containing patient health information (PHI) to external domains, ensuring HIPAA compliance.
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 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.
What to study next
Got this wrong? Here's your next step.
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Purview Data Loss Prevention (DLP) policy — Microsoft Purview Data Loss Prevention (DLP) policy is the correct feature because it is specifically designed to detect sensitive data (e.g., credit card numbers) in transit and enforce actions such as showing a policy tip and blocking the email. DLP policies use sensitive information types (e.g., Credit Card Number) and conditions to inspect email content in Exchange Online, triggering a block action with an end-user notification when a match occurs.
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.
About these practice questions
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Last reviewed: Jun 11, 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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