MS-900 Describe Microsoft 365 apps and services Practice Question
This MS-900 practice question tests your understanding of describe microsoft 365 apps and services. 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 365 and wants to ensure that sensitive customer data in emails and documents is automatically classified and protected based on content. Which service should they implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Purview Information Protection
Microsoft Purview Information Protection (formerly Azure Information Protection) is the correct service because it provides automated classification, labeling, and protection of sensitive data based on content inspection, such as credit card numbers or social security numbers, using trainable classifiers and sensitivity labels. This directly addresses the requirement to automatically classify and protect sensitive customer data in emails and documents within Microsoft 365.
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.
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Microsoft Entra ID
Why it's wrong here
Entra ID is an identity and access management service, not data classification.
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Microsoft Intune
Why it's wrong here
Intune manages devices and mobile application management, not data classification.
✗
Microsoft Defender for Cloud Apps
Why it's wrong here
Defender for Cloud Apps protects cloud apps from threats, not automatic data classification.
✓
Microsoft Purview Information Protection
Why this is correct
Purview Information Protection uses sensitivity labels to automatically classify and protect data.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Microsoft often tests the distinction between Microsoft Purview Information Protection (content classification and labeling) and Microsoft Defender for Cloud Apps (cloud app security and DLP), leading candidates to mistakenly choose Defender for Cloud Apps because they associate 'protection' with security monitoring rather than content-based classification.
Detailed technical explanation
How to think about this question
Purview Information Protection uses sensitivity labels that can be configured with automatic classification rules based on sensitive information types (e.g., credit card numbers via regex patterns) or trainable classifiers. When a user creates or edits a document or email, the client-side labeling engine (integrated into Office apps) inspects the content in real time and applies the appropriate label, which can then enforce encryption, rights management, or visual markings. In a real-world scenario, a financial services firm could automatically label any email containing a customer's Social Security Number as 'Highly Confidential' and encrypt it with Azure Rights Management, ensuring only authorized recipients can decrypt it.
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-900 question in full detail.
Describe Microsoft 365 apps and services — This question tests Describe Microsoft 365 apps and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Purview Information Protection — Microsoft Purview Information Protection (formerly Azure Information Protection) is the correct service because it provides automated classification, labeling, and protection of sensitive data based on content inspection, such as credit card numbers or social security numbers, using trainable classifiers and sensitivity labels. This directly addresses the requirement to automatically classify and protect sensitive customer data in emails and documents within Microsoft 365.
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.
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Question Discussion
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