The answer is to create an auto-labeling policy that uses a sensitive info type for PII. This configuration is correct because Microsoft Purview auto-labeling policies are designed to scan content at rest in SharePoint Online and automatically apply sensitivity labels based on conditions like sensitive info types, such as U.S. Social Security Numbers or other PII patterns, without requiring user intervention. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how auto-labeling differs from manual or default labeling—a common trap is confusing auto-labeling with client-side labeling policies that require user action. Remember that auto-labeling works server-side for documents already stored or uploaded, making it ideal for PII detection at scale. Memory tip: think “auto = automatic, server-side scan; sensitive info type = the trigger condition.”
SC-100 Practice Question: Design solutions that align with security best practices and priorities
This SC-100 practice question tests your understanding of design solutions that align with security best practices and priorities. 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.
Your organization is planning to deploy Microsoft Purview Information Protection to classify and protect sensitive data. You need to design a solution that automatically applies sensitivity labels to documents containing personally identifiable information (PII) when they are uploaded to SharePoint Online. Which configuration should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an auto-labeling policy that uses a sensitive info type for PII
Option C is correct because Microsoft Purview auto-labeling policies can automatically apply sensitivity labels to documents containing PII when they are uploaded to SharePoint Online. By configuring a policy with a sensitive info type (e.g., U.S. Social Security Number) as the condition, the service scans content at rest and applies the label without user intervention, meeting the requirement for automatic classification.
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.
✗
Set a default sensitivity label for the SharePoint site
Why it's wrong here
A default label applies to all documents, not just those containing PII.
✗
Use trainable classifiers to identify PII and apply labels
Why it's wrong here
Trainable classifiers require sample data and training, not immediate rule-based detection.
✓
Create an auto-labeling policy that uses a sensitive info type for PII
Why this is correct
Auto-labeling policies can automatically apply labels based on detection of sensitive information types like PII.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure a manual labeling policy that prompts users to classify documents
Why it's wrong here
Manual labeling does not automate the process.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing trainable classifiers with sensitive info types; candidates often pick trainable classifiers because they sound like a smart AI solution, but they are designed for broader content categories, not specific PII patterns like SSNs or credit card numbers.
Detailed technical explanation
How to think about this question
Auto-labeling policies in Microsoft Purview use the same sensitive information types (SITs) as Data Loss Prevention (DLP) policies, leveraging the Microsoft 365 content scanner to evaluate documents against defined patterns and confidence levels. The policy applies labels to documents at rest in SharePoint Online, OneDrive, or Exchange, and can be configured to run in simulation mode first to test accuracy before enforcement. This approach ensures compliance with regulations like GDPR or HIPAA by automatically protecting PII without relying on user behavior.
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 solutions that align with security best practices and priorities — This question tests Design solutions that align with security best practices and priorities — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an auto-labeling policy that uses a sensitive info type for PII — Option C is correct because Microsoft Purview auto-labeling policies can automatically apply sensitivity labels to documents containing PII when they are uploaded to SharePoint Online. By configuring a policy with a sensitive info type (e.g., U.S. Social Security Number) as the condition, the service scans content at rest and applies the label without user intervention, meeting the requirement for automatic classification.
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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