This SC-100 practice question tests your understanding of design security operations, identity, and compliance capabilities. 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 Purview to classify and label sensitive data. They want to automatically apply a sensitivity label to documents containing a specific custom sensitive information type. Which TWO components are required for this?
Data loss prevention (DLP) policy
Why wrong: DLP policy does not apply sensitivity labels.
Retention label
Why wrong: Retention labels are for retention, not sensitivity.
Custom sensitive information type
Custom types define the pattern to match.
Auto-labeling policy
Auto-labeling policies can automatically apply labels.
Trainable classifier
Why wrong: Trainable classifiers are for machine learning, not custom patterns.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Custom sensitive information type
Option C is correct because a custom sensitive information type defines the specific data pattern (e.g., a proprietary employee ID format) that Microsoft Purview can detect in documents. Option D is correct because an auto-labeling policy uses that custom sensitive information type as a condition to automatically apply a sensitivity label to matching content, without requiring user intervention.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Data loss prevention (DLP) policy
Why it's wrong here
DLP policy does not apply sensitivity labels.
Retention label
Why it's wrong here
Retention labels are for retention, not sensitivity.
Custom sensitive information type
Why this is correct
Custom types define the pattern to match.
Related concept
Read the scenario before looking for a memorised answer.
Auto-labeling policy
Why this is correct
Auto-labeling policies can automatically apply labels.
Related concept
Read the scenario before looking for a memorised answer.
Trainable classifier
Why it's wrong here
Trainable classifiers are for machine learning, not custom patterns.
Common exam traps
The trap here is that candidates often confuse the role of a DLP policy (which enforces actions like blocking) with an auto-labeling policy (which applies labels), or they mistakenly think a trainable classifier is needed when a custom sensitive information type already provides deterministic pattern matching.
Detailed technical explanation
Under the hood, a custom sensitive information type is defined using an XML rule package that specifies patterns, keywords, and proximity requirements, which the Microsoft Purview Information Protection scanner evaluates against content. The auto-labeling policy runs as a background process (simulation or enforcement mode) that scans documents in SharePoint, OneDrive, or Exchange, and when a match occurs, it calls the Azure Information Protection service to stamp the sensitivity label metadata into the file. A real-world scenario is a healthcare organization that creates a custom sensitive information type for medical record numbers (e.g., 'MRN-XXXXXX') and uses an auto-labeling policy to apply a 'Highly Confidential' label to all documents containing that pattern, ensuring consistent classification across thousands of files.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Design security operations, identity, and compliance capabilities — This question tests Design security operations, identity, and compliance capabilities — Read the scenario before looking for a memorised answer..
The correct answer is: Custom sensitive information type — Option C is correct because a custom sensitive information type defines the specific data pattern (e.g., a proprietary employee ID format) that Microsoft Purview can detect in documents. Option D is correct because an auto-labeling policy uses that custom sensitive information type as a condition to automatically apply a sensitivity label to matching content, without requiring user intervention.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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