The correct first step is to upgrade to Microsoft 365 E5 or purchase a DLP add-on license. This is required because Microsoft 365 E3 only includes basic Exchange mail flow rules, not the full Microsoft Purview Data Loss Prevention (DLP) policy engine needed to block sensitive data from being shared externally via email. The advanced DLP capabilities—such as policy tips, automatic remediation, and integration with Microsoft 365 Defender—are exclusive to E5 or the standalone DLP add-on. On the MS-102 exam, this question tests your understanding of licensing boundaries for Purview features; a common trap is assuming E3’s built-in DLP is sufficient for external sharing controls. Remember that E3 DLP is “detect only” for email, while E5 or the add-on enables “block and notify.” Memory tip: Think “E3 = basic rules, E5 = full DLP.”
MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. 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.
Your company has a Microsoft 365 E3 tenant. You need to enable Microsoft Purview Data Loss Prevention (DLP) to prevent sensitive data from being shared externally via email. What must you do first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Upgrade to Microsoft 365 E5 or purchase a DLP add-on
Microsoft 365 E3 does not include the advanced DLP capabilities required to prevent sensitive data from being shared externally via email. The correct first step is to upgrade to Microsoft 365 E5 or purchase a DLP add-on license, as DLP policies for Exchange Online in E3 are limited to basic rule-based protection and cannot enforce the full Purview DLP policy set. Without the appropriate license, any attempt to create or apply a DLP policy will fail or be non-functional.
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.
✗
Create a DLP policy in Microsoft Defender XDR
Why it's wrong here
DLP policies are created in the Microsoft Purview compliance portal.
✗
Navigate to the Microsoft Purview compliance portal and create a DLP policy
Why it's wrong here
This is correct action but licensing must be addressed first.
✗
Use Exchange Online PowerShell to configure DLP rules
Why it's wrong here
PowerShell can be used, but licensing prerequisite remains.
✓
Upgrade to Microsoft 365 E5 or purchase a DLP add-on
Why this is correct
E5 or an add-on is required for DLP.
Clue confirmation
The clue word "first" 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
The trap here is that candidates assume the Microsoft Purview compliance portal is accessible and functional for DLP policy creation in any Microsoft 365 plan, but Microsoft enforces licensing requirements at the service level, so without E5 or a DLP add-on, the DLP policy creation and enforcement features are disabled.
Detailed technical explanation
How to think about this question
Microsoft Purview DLP relies on a unified policy engine that integrates with Exchange Online, SharePoint Online, OneDrive for Business, and Microsoft Teams. In E3, only Exchange mail flow rules (transport rules) are available, which lack the advanced classification and contextual analysis of Purview DLP, such as exact data match (EDM) and machine learning classifiers. A real-world scenario: an organization with E3 attempting to block credit card numbers in email attachments will find that transport rules can match patterns but cannot apply the full DLP policy actions like user notifications or policy tips without the E5 license.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Upgrade to Microsoft 365 E5 or purchase a DLP add-on — Microsoft 365 E3 does not include the advanced DLP capabilities required to prevent sensitive data from being shared externally via email. The correct first step is to upgrade to Microsoft 365 E5 or purchase a DLP add-on license, as DLP policies for Exchange Online in E3 are limited to basic rule-based protection and cannot enforce the full Purview DLP policy set. Without the appropriate license, any attempt to create or apply a DLP policy will fail or be non-functional.
What should I do if I get this MS-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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