The correct answer is Data Loss Prevention (DLP) policy. This Microsoft Purview solution is specifically designed to detect sensitive information types, such as credit card numbers, using predefined rule patterns that validate against the Luhn algorithm, and can enforce immediate actions like blocking the email while displaying a policy tip to the sender. On the MS-102 exam, this scenario tests your understanding of how DLP policies apply to data in transit—a common trap is confusing DLP with Microsoft Defender for Office 365 or sensitivity labels, which handle threat protection and classification, not real-time blocking with user notification. Remember that when you need to block emails with credit card numbers and show a policy tip, you are configuring a DLP rule with an action set to "Block" and a notification tip enabled. A useful memory tip: DLP = Detect, Lock, and Prompt—it finds the sensitive data, locks the send action, and prompts the user with a tip.
MS-102 Manage compliance by using Microsoft Purview Practice Question
This MS-102 practice question tests your understanding of manage compliance by using microsoft purview. 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 needs to block users from sharing emails that contain credit card numbers with external recipients. When a user attempts to send such an email, it should be blocked immediately, and a policy tip should notify the user. Which Microsoft Purview solution should the officer configure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "immediately / without restart"
Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
DLP policies can detect credit card numbers in Exchange Online emails and block them with user notifications via policy tips.
B
Sensitivity label with encryption.
Why wrong: Sensitivity labels can encrypt messages but do not block sending based on content; they require manual or automatic labeling, not real-time blocking.
C
Microsoft Defender for Office 365 Safe Attachments policy.
Why wrong: Safe Attachments scans attachments for malware, not sensitive content like credit card numbers.
D
Communication compliance policy.
Why wrong: Communication compliance monitors communications for policy violations (e.g., harassment) but does not block emails in real time based on sensitive data.
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) policy.
A Data Loss Prevention (DLP) policy is the correct solution because it is specifically designed to detect sensitive information types (e.g., credit card numbers via predefined rule patterns matching the Luhn algorithm) in transit and enforce actions such as blocking the email and displaying a policy tip to the sender. This meets the compliance officer's requirement to block external sharing of credit card data immediately with user notification.
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.
✓
Data Loss Prevention (DLP) policy.
Why this is correct
DLP policies can detect credit card numbers in Exchange Online emails and block them with user notifications via policy tips.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Sensitivity label with encryption.
Why it's wrong here
Sensitivity labels can encrypt messages but do not block sending based on content; they require manual or automatic labeling, not real-time blocking.
✗
Microsoft Defender for Office 365 Safe Attachments policy.
Why it's wrong here
Safe Attachments scans attachments for malware, not sensitive content like credit card numbers.
✗
Communication compliance policy.
Why it's wrong here
Communication compliance monitors communications for policy violations (e.g., harassment) but does not block emails in real time based on sensitive data.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the real-time blocking and notification capability of DLP with sensitivity labels (which only apply protection after classification) or communication compliance (which is a review-based solution, not a real-time enforcement mechanism).
Detailed technical explanation
How to think about this question
Under the hood, a DLP policy in Microsoft Purview uses sensitive information types (SITs) that combine regex patterns, keyword lists, and checksum validation (e.g., the Luhn algorithm for credit cards) to accurately detect data. When a policy is configured with an action to 'Block' and 'Notify user with a policy tip', Exchange Online Transport Rules enforce the restriction at the SMTP transport layer before the message leaves the organization, ensuring immediate blocking and user feedback.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Manage compliance by using Microsoft Purview — This question tests Manage compliance by using Microsoft Purview — 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) policy. — A Data Loss Prevention (DLP) policy is the correct solution because it is specifically designed to detect sensitive information types (e.g., credit card numbers via predefined rule patterns matching the Luhn algorithm) in transit and enforce actions such as blocking the email and displaying a policy tip to the sender. This meets the compliance officer's requirement to block external sharing of credit card data immediately with user notification.
What should I do if I get this MS-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A user in your organization receives a 'Message blocked' notification when trying to send an email with a credit card number. The DLP policy is configured to block such emails. The user claims the credit card number is a valid test number used for training. What should you do to allow the email while maintaining security?
easy
✓ A.Configure a policy tip to allow override with a business justification.
B.Exclude the user from the DLP policy.
C.Disable the DLP policy temporarily.
D.Add the user to the DLP policy's super user group.
Why A: Option C is correct because configuring a policy tip with override allows the user to justify the override, which is audited. Option A is wrong because adding to a group bypasses all DLP. Option B is wrong because excluding the user removes protection. Option D is wrong because disabling the policy removes protection for all.
Last reviewed: Jun 11, 2026
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This MS-102 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-102 exam.
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