The answer is a sensitivity label with auto-labeling for sensitive info types. This configuration is correct because Microsoft Purview Information Protection allows you to create a sensitivity label that automatically applies encryption when it detects a specific sensitive info type, such as a patient ID pattern like ###-####, through auto-labeling for files. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how auto-labeling sensitive data with sensitivity labels differs from retention labels, which only manage data lifecycle, and from DLP policies, which alert but do not automatically label or encrypt. A common trap is confusing trainable classifiers with pattern-based auto-labeling—trainable classifiers require machine learning training and cannot use a simple regex pattern like the patient ID format. Remember the key distinction: for automatic encryption based on a fixed pattern, always choose a sensitivity label with auto-labeling for sensitive info types, not a retention or DLP solution. Memory tip: "Sensitivity labels sense and seal; retention labels only keep, DLP only peep."
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. 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.
A healthcare organization uses Microsoft Purview Information Protection to classify and protect patient data. They want to automatically apply a 'High Confidentiality' label to any document containing a patient ID pattern (###-####). The label should also encrypt the document. Which configuration 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
✓
Sensitivity label with auto-labeling for sensitive info types
Option B is correct because a sensitivity label with auto-labeling for files containing sensitive info types (like patient IDs) can apply encryption automatically. Option A is wrong because a retention label only manages retention, not encryption. Option C is wrong because a DLP policy alerts but does not automatically label. Option D is wrong because a trainable classifier requires training and does not use a regex pattern.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Retention label with auto-labeling policy
Why it's wrong here
Retention labels manage how long data is kept, but do not provide encryption.
✗
Data Loss Prevention (DLP) policy with a block action
Why it's wrong here
DLP policies can block sharing but do not automatically apply labels or encryption.
✓
Sensitivity label with auto-labeling for sensitive info types
Why this is correct
Sensitivity labels can be configured to automatically apply based on sensitive info types (like patient ID pattern) and include encryption.
Related concept
Static NAT maps one inside address to one outside address.
✗
Trainable classifier with a retention policy
Why it's wrong here
Trainable classifiers require machine learning training and cannot directly apply encryption.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
Design security solutions for applications and data — This question tests Design security solutions for applications and data — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Sensitivity label with auto-labeling for sensitive info types — Option B is correct because a sensitivity label with auto-labeling for files containing sensitive info types (like patient IDs) can apply encryption automatically. Option A is wrong because a retention label only manages retention, not encryption. Option C is wrong because a DLP policy alerts but does not automatically label. Option D is wrong because a trainable classifier requires training and does not use a regex pattern.
What should I do if I get this SC-100 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO Microsoft Purview features can be used to classify and label data in Microsoft 365?
easy
A.Retention policies
B.eDiscovery
✓ C.Auto-labeling policies
D.Audit logs
✓ E.Sensitive info types
Why C: Options B and C are correct. Sensitive info types define patterns to classify data, and auto-labeling policies apply labels automatically. Option A is wrong because eDiscovery is for discovery in legal cases. Option D is wrong because audit logs track activities. Option E is wrong because retention policies manage data retention.
Last reviewed: Jun 21, 2026
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