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. 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 compliance team needs to prevent employees from copying sensitive data (such as financial records or customer PII) to USB drives and other removable media from their Windows 10/11 devices. When a user attempts to copy data to an unapproved USB device, the action should be blocked and an alert should be generated. Which Microsoft Purview solution should they configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Purview Data Loss Prevention (DLP) with device policies
Microsoft Purview Data Loss Prevention (DLP) with device policies is the correct solution because it is specifically designed to monitor and control actions like copying sensitive data to removable media on Windows 10/11 endpoints. DLP device policies can block the copy action to unapproved USB devices and generate alerts when a policy violation occurs, directly addressing the compliance team's requirement to prevent data exfiltration via USB drives.
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 Purview Data Lifecycle Management (retention policies)
Why it's wrong here
Retention policies govern how long data is kept and when it is deleted, not real-time prevention of copying to removable media.
✗
Microsoft Purview Information Protection (sensitivity labels)
Why it's wrong here
Sensitivity labels classify and protect data (e.g., encryption), but they do not block copy actions to USB drives.
✓
Microsoft Purview Data Loss Prevention (DLP) with device policies
Why this is correct
Endpoint DLP policies can detect and block attempts to copy sensitive data to removable media, providing real-time protection and alerts.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Purview eDiscovery (Standard or Premium)
Why it's wrong here
eDiscovery is used for legal investigations and content searches, not for preventing data copying.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse sensitivity labels (which classify and protect data) with DLP policies (which enforce actions like blocking copy to USB), but sensitivity labels alone cannot block endpoint-level copy actions without DLP device policies.
Detailed technical explanation
How to think about this question
DLP device policies leverage the Microsoft 365 Endpoint DLP agent, which integrates with the Windows 10/11 built-in file system minifilter driver to inspect file operations in real time. When a user attempts to copy a file containing sensitive data (e.g., matched by a sensitive info type like Credit Card Number or custom PII pattern) to a removable USB device, the agent can block the operation and log the event to the Microsoft 365 compliance portal for alerting. A subtle behavior is that DLP device policies can also apply to network shares and Bluetooth transfers, not just USB, and require devices to be Azure AD joined or hybrid joined with the endpoint DLP client installed.
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 MS-900 question in full detail.
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Purview Data Loss Prevention (DLP) with device policies — Microsoft Purview Data Loss Prevention (DLP) with device policies is the correct solution because it is specifically designed to monitor and control actions like copying sensitive data to removable media on Windows 10/11 endpoints. DLP device policies can block the copy action to unapproved USB devices and generate alerts when a policy violation occurs, directly addressing the compliance team's requirement to prevent data exfiltration via USB drives.
What should I do if I get this MS-900 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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