The answer is Microsoft Purview Information Protection, the correct tool for classifying and protecting sensitive data in SharePoint Online as part of a Zero Trust data protection strategy. This solution uses sensitivity labels to automatically apply encryption, rights management, and visual markings like headers and footers to documents based on policy conditions, ensuring data is protected both at rest and in transit—directly supporting the Zero Trust principle of 'assume breach'. On the Microsoft Cybersecurity Architect exam, this question tests your ability to distinguish between Purview Information Protection and other tools like Azure Information Protection (now unified) or Microsoft Purview Data Loss Prevention; a common trap is confusing the labeling engine with the broader Purview suite. Remember that sensitivity labels are the core mechanism here, not just discovery tools. A helpful memory tip: think "Labels Lock SharePoint"—sensitivity labels are the lock that enforces classification and protection across your SharePoint libraries.
SC-100 Design a Zero Trust strategy and architecture Practice Question
This SC-100 practice question tests your understanding of design a zero trust strategy and architecture. 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 is planning their Zero Trust data protection strategy. They want to classify and protect sensitive data stored in SharePoint Online. Which Microsoft tool should they use?
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 Microsoft Information Protection) is the correct tool because it provides integrated classification, labeling, and protection for sensitive data across Microsoft 365 services, including SharePoint Online. It uses sensitivity labels that can automatically apply encryption, rights management, and visual markings (headers/footers) to documents based on policy conditions, directly supporting the Zero Trust principle of 'assume breach' by protecting data at rest and in transit.
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.
✗
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 provides cloud app security but does not perform data classification.
✓
Microsoft Purview Information Protection
Why this is correct
Purview Information Protection provides data classification and labeling.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Policy
Why it's wrong here
Azure Policy enforces compliance rules on Azure resources, not data classification.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Defender for Cloud Apps (a CASB for monitoring and controlling cloud app usage) with the data classification and labeling capabilities of Microsoft Purview Information Protection, because both tools can handle sensitive data but serve fundamentally different roles in a Zero Trust strategy.
Detailed technical explanation
How to think about this question
Microsoft Purview Information Protection uses Azure Rights Management (Azure RMS) as its underlying encryption engine, which leverages the Cryptographic Message Syntax (CMS) standard (RFC 5652) to protect documents. Sensitivity labels can be configured with automatic classification rules using trainable classifiers or exact data match (EDM) patterns, and when applied to SharePoint Online documents, they enforce encryption that travels with the file even when downloaded or shared externally, ensuring data protection persists outside the tenant boundary.
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 SC-100 question in full detail.
Design a Zero Trust strategy and architecture — This question tests Design a Zero Trust strategy and architecture — 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 Microsoft Information Protection) is the correct tool because it provides integrated classification, labeling, and protection for sensitive data across Microsoft 365 services, including SharePoint Online. It uses sensitivity labels that can automatically apply encryption, rights management, and visual markings (headers/footers) to documents based on policy conditions, directly supporting the Zero Trust principle of 'assume breach' by protecting data at rest and in transit.
What should I do if I get this SC-100 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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