MS-900 Practice Question: Describe security, compliance, privacy, and trust in Microsoft 365
This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 is using Microsoft 365 and needs to ensure that patient data (protected health information) is not accidentally shared externally. They want to classify all documents containing medical terms and apply automatic encryption when shared outside the organization. Which two Microsoft Purview features should they combine? (Select TWO)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Sensitivity labels with auto-labeling based on trainable classifiers
Options A and C are correct: Sensitivity labels classify data, and auto-labeling with trainable classifiers can detect medical terms. DLP policies then enforce encryption on external sharing. Option B is incorrect because Communication Compliance is for inappropriate messages. Option D is incorrect because Insider Risk Management addresses internal risky behavior. Option E is incorrect because sensitivity labels alone do not enforce encryption; that requires DLP or label protection actions.
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.
✓
Sensitivity labels with auto-labeling based on trainable classifiers
Why this is correct
Trainable classifiers can detect medical terms and auto-apply labels.
Related concept
Static NAT maps one inside address to one outside address.
✓
Data Loss Prevention (DLP) policies with encryption action
Why this is correct
DLP can enforce encryption when sensitive data is shared externally.
Related concept
Static NAT maps one inside address to one outside address.
✗
Insider Risk Management policies
Why it's wrong here
Insider Risk Management detects risky user activities, not classification.
✗
Communication Compliance policies
Why it's wrong here
Communication Compliance monitors for policy violations, not classification.
✗
Microsoft Entra ID Conditional Access policies
Why it's wrong here
Conditional Access controls access, not data classification or 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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-900 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 MS-900 NAT questions on configuration and troubleshooting.
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Sensitivity labels with auto-labeling based on trainable classifiers — Options A and C are correct: Sensitivity labels classify data, and auto-labeling with trainable classifiers can detect medical terms. DLP policies then enforce encryption on external sharing. Option B is incorrect because Communication Compliance is for inappropriate messages. Option D is incorrect because Insider Risk Management addresses internal risky behavior. Option E is incorrect because sensitivity labels alone do not enforce encryption; that requires DLP or label protection actions.
What should I do if I get this MS-900 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 MS-900 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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