- A
Microsoft Purview Message Encryption
Correct. Message Encryption with IRM enables restrictions like preventing forwarding/printing and setting an expiration date on email messages.
- B
Data Loss Prevention (DLP) policies
Why wrong: Incorrect. DLP policies monitor and prevent data from being shared inappropriately, but they do not allow applying restrictions on forwarded content or setting expiration.
- C
Sensitivity labels
Why wrong: Incorrect. Sensitivity labels can protect documents and emails, but for email-specific scenarios with restrictions and expiration, Message Encryption is the recommended solution.
- D
eDiscovery (Premium)
Why wrong: Incorrect. eDiscovery is used for searching and preserving content for legal investigations, not for applying usage restrictions to outgoing emails.
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. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 legal firm needs to send a confidential document to a client via email. The firm requires that the client cannot forward or print the email and that the email expires after seven days. Which Microsoft Purview solution should they use?
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 Message Encryption
Microsoft Purview Message Encryption (A) is the correct solution because it allows the legal firm to apply usage restrictions such as preventing forwarding and printing, and to set an expiration period of seven days on the email. This is achieved through Azure Rights Management (Azure RMS) templates that enforce these controls directly on the encrypted message, ensuring the client cannot bypass the restrictions.
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 Message Encryption
Why this is correct
Correct. Message Encryption with IRM enables restrictions like preventing forwarding/printing and setting an expiration date on email messages.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Data Loss Prevention (DLP) policies
Why it's wrong here
Incorrect. DLP policies monitor and prevent data from being shared inappropriately, but they do not allow applying restrictions on forwarded content or setting expiration.
- ✗
Sensitivity labels
Why it's wrong here
Incorrect. Sensitivity labels can protect documents and emails, but for email-specific scenarios with restrictions and expiration, Message Encryption is the recommended solution.
- ✗
eDiscovery (Premium)
Why it's wrong here
Incorrect. eDiscovery is used for searching and preserving content for legal investigations, not for applying usage restrictions to outgoing emails.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse sensitivity labels with Message Encryption, not realizing that while labels can apply encryption, they do not natively support per-message expiration or granular usage restrictions like 'do not forward' and 'do not print' without additional configuration via Azure RMS templates, which is exactly what Message Encryption provides out-of-the-box.
Trap categories for this question
Scenario analysis trap
Incorrect. Sensitivity labels can protect documents and emails, but for email-specific scenarios with restrictions and expiration, Message Encryption is the recommended solution.
Detailed technical explanation
How to think about this question
Under the hood, Microsoft Purview Message Encryption leverages Azure Rights Management (Azure RMS) to apply a policy that includes an 'expire after' value (set in days) and usage rights such as 'VIEW' (allow view only, no print/forward). The encryption uses AES-256 and the policy is enforced by the Rights Management client on the recipient's device, even if the email is accessed via a web browser using the OME portal. A subtle behavior is that if the recipient uses a third-party email client that does not support RMS, they must view the message in a browser, where the restrictions are still enforced via JavaScript and server-side checks.
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 Message Encryption — Microsoft Purview Message Encryption (A) is the correct solution because it allows the legal firm to apply usage restrictions such as preventing forwarding and printing, and to set an expiration period of seven days on the email. This is achieved through Azure Rights Management (Azure RMS) templates that enforce these controls directly on the encrypted message, ensuring the client cannot bypass the restrictions.
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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