The answer is to configure a DLP rule that blocks sharing unless the email is encrypted, with user override. This works because Microsoft Purview DLP can inspect email content for sensitive data like credit card numbers and apply an action—such as blocking the message—but it also supports exception conditions, allowing the block to be bypassed when the email is encrypted, typically via Microsoft 365 Message Encryption. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how DLP policies enforce data protection at the transport layer while still permitting legitimate business use through encryption, a common trap being to confuse DLP with mail flow rules or sensitivity labels. Remember that DLP controls the action (block or allow) based on content, while encryption secures the channel—they work together, not in isolation. A helpful memory tip is “Block the plain, pass the encrypted lane.”
SC-100 Practice Question: Design security operations, identity, and compliance capabilities
This SC-100 practice question tests your understanding of design security operations, identity, and compliance capabilities. 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 company uses Microsoft Purview Data Loss Prevention (DLP) to protect sensitive data. They want to prevent users from sharing credit card numbers in email but allow sharing via encrypted email. What should they configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a DLP rule that blocks sharing unless the email is encrypted, with user override
Option A is correct because the DLP rule can be set to block with override allowing encrypted email. Option B is wrong because encryption policies don't block unencrypted sharing. Option C is wrong because sensitivity labels are for classification, not DLP enforcement. Option D is wrong because mail flow rules are separate from DLP.
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.
✗
Assign a sensitivity label that encrypts the email automatically
Why it's wrong here
Sensitivity labels classify, but DLP enforces the action.
✗
Create a Microsoft Purview Message Encryption policy
Configure a DLP rule that blocks sharing unless the email is encrypted, with user override
Why this is correct
DLP can allow encrypted emails as an exception.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Exchange mail flow rules to block unencrypted credit card data
Why it's wrong here
Mail flow rules are less integrated than DLP.
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 SC-100 question in full detail.
Identify which SC-100 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.
Design security operations, identity, and compliance capabilities — This question tests Design security operations, identity, and compliance capabilities — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a DLP rule that blocks sharing unless the email is encrypted, with user override — Option A is correct because the DLP rule can be set to block with override allowing encrypted email. Option B is wrong because encryption policies don't block unencrypted sharing. Option C is wrong because sensitivity labels are for classification, not DLP enforcement. Option D is wrong because mail flow rules are separate from DLP.
What should I do if I get this SC-100 question wrong?
Identify which SC-100 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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