The answer is Data Loss Prevention (DLP) and Communication Compliance. These two capabilities work together to prevent sensitive data from leaking through Microsoft Teams messages: DLP policies in Microsoft Purview automatically scan messages for sensitive information like credit card numbers or social security numbers and can block or warn users in real time, while Communication Compliance policies monitor for policy violations such as inappropriate language or insider trading, providing alerts and remediation workflows. On the Microsoft Cybersecurity Architect exam, this pairing tests your understanding of how Microsoft 365 Defender integrates with Purview to address both content-based data leakage and behavioral compliance—a common trap is confusing sensitivity labels (which classify but don’t scan messages) with DLP, or selecting Information Barriers (which restrict communication between groups but don’t prevent data leakage). Remember the memory tip: DLP catches the “what” (sensitive data), Communication Compliance catches the “who” (policy-violating behavior).
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 Defender XDR (formerly Microsoft 365 Defender) to protect their Microsoft 365 environment. They want to ensure that sensitive data is not leaked through Microsoft Teams messages. Which TWO capabilities should they use? (Choose TWO.)
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) policies
DLP policies in Microsoft Purview can scan Teams messages for sensitive data, and Communication Compliance policies can help detect policy violations. Option A and Option C are correct. Option B is wrong because sensitivity labels are for manual or automatic classification, not real-time scanning of messages. Option D is wrong because retention policies are for data retention, not prevention. Option E is wrong because Information Barriers prevent communication between groups, not data leakage.
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) policies
Why this is correct
Can detect and block sharing of sensitive data in Teams messages.
Related concept
Read the scenario before looking for a memorised answer.
✗
Information Barriers
Why it's wrong here
Restrict communication between certain groups, not for monitoring sensitive data.
✗
Sensitivity labels
Why it's wrong here
Labels can classify messages but are not designed to prevent leakage in real-time.
✓
Communication Compliance
Why this is correct
Helps detect violations like sharing of sensitive information in Teams.
Related concept
Read the scenario before looking for a memorised answer.
✗
Retention policies
Why it's wrong here
Used for retaining or deleting data, not for preventing leakage.
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 solutions for applications and data — This question tests Design security solutions for applications and data — 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) policies — DLP policies in Microsoft Purview can scan Teams messages for sensitive data, and Communication Compliance policies can help detect policy violations. Option A and Option C are correct. Option B is wrong because sensitivity labels are for manual or automatic classification, not real-time scanning of messages. Option D is wrong because retention policies are for data retention, not prevention. Option E is wrong because Information Barriers prevent communication between groups, not data leakage.
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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