A compliance officer needs to ensure that all outgoing emails containing a customer's credit card number are automatically encrypted before delivery. External recipients must be able to reply with the same level of encryption without a separate signing-up process. Which Microsoft Purview solution should be configured?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Best answer
Office 365 Message Encryption (OME) with a DLP policy
DLP policies can detect credit card numbers and trigger OME encryption automatically. OME allows external recipients to reply encrypted via a secure portal.
Distractor review
Sensitivity labels with automatic marking
Sensitivity labels can be auto-applied to emails based on content, but the primary mechanism for automatic email encryption is OME with DLP.
Distractor review
Azure Information Protection (AIP)
AIP is the underlying classification engine but the recommended approach for email encryption uses OME and DLP policies.
Distractor review
Microsoft Defender for Office 365
Defender for Office 365 protects against threats like phishing and malware, but does not provide native email encryption capabilities.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related MS-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 6
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FAQ
Questions learners often ask
What does this MS-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Office 365 Message Encryption (OME) with a DLP policy — Office 365 Message Encryption (OME) combined with a Data Loss Prevention (DLP) policy can automatically detect credit card numbers in emails and apply encryption. OME allows external recipients to reply securely using the same portal-based encryption, requiring no additional configuration on the recipient's side. Sensitivity labels can encrypt but require user manual application or auto-labeling rules; however, the built-in OME+DLP integration is the standard method for automatic email encryption based on sensitive data. Azure Information Protection is part of modern sensitivity labeling but is not the primary solution for automatic email encryption. Microsoft Defender for Office 365 focuses on threat protection, not data encryption.
What should I do if I get this MS-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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