The correct answer is that the primary purpose of a Data Loss Prevention (DLP) policy is to detect and prevent the sharing of sensitive information via email and other channels. This is because DLP policies in Microsoft Purview use deep content analysis to identify data like credit card numbers or social security numbers, then apply rules to block or warn users before the data leaves your organization. On the MS-102 exam, this concept tests your ability to distinguish DLP from adjacent security tools—a common trap is confusing DLP with email encryption (handled by Office 365 Message Encryption) or malware protection (handled by Defender for Office 365). Remember, DLP is about controlling where sensitive data goes, not how it is encrypted or scanned for threats. A useful memory tip: DLP = Data Leaving Prevention—if the data is trying to leave, DLP is the gatekeeper.
MS-102 Practice Question: Manage security and threats by using Microsoft Defender XDR
This MS-102 practice question tests your understanding of manage security and threats by using microsoft defender xdr. 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.
As a Microsoft 365 administrator, you need to ensure that sensitive data is not shared externally via email. You configure Data Loss Prevention (DLP) policies in Microsoft Purview. What is the primary purpose of a DLP policy?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Detect and prevent the sharing of sensitive information via email and other channels.
Option A is correct because DLP policies are designed to detect and prevent accidental or intentional sharing of sensitive information. Option B is wrong because email encryption is provided by Azure Information Protection or Office 365 Message Encryption. Option C is wrong because malware protection is handled by Defender for Office 365. Option D is wrong because DLP does not block all external emails.
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.
✗
Prevent users from sending any external email.
Why it's wrong here
DLP is not designed to block all external email, only those containing sensitive data.
✗
Block all inbound emails from untrusted domains.
Why it's wrong here
Blocking inbound emails is done by anti-spam policies.
✗
Encrypt all outgoing emails automatically.
Why it's wrong here
Encryption is a separate feature, not the primary purpose of DLP.
✓
Detect and prevent the sharing of sensitive information via email and other channels.
Why this is correct
DLP policies identify, monitor, and protect sensitive data across Microsoft 365 services.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
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 MS-102 question in full detail.
Identify which MS-102 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.
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Detect and prevent the sharing of sensitive information via email and other channels. — Option A is correct because DLP policies are designed to detect and prevent accidental or intentional sharing of sensitive information. Option B is wrong because email encryption is provided by Azure Information Protection or Office 365 Message Encryption. Option C is wrong because malware protection is handled by Defender for Office 365. Option D is wrong because DLP does not block all external emails.
What should I do if I get this MS-102 question wrong?
Identify which MS-102 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.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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