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.
An organisation wants to identify documents containing credit card numbers and prevent users from sharing them externally from SharePoint Online and Exchange Online. Which two Microsoft Purview capabilities are most relevant? (Choose 2.)
Sensitive information types.
They detect patterns such as credit card numbers.
Data Loss Prevention policies.
DLP can enforce restrictions across Exchange, SharePoint, and OneDrive.
Microsoft Bookings.
Why wrong: Bookings manages appointment scheduling.
Windows Autopilot.
Why wrong: Autopilot provisions Windows devices, not data loss controls.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Sensitive information types.
Sensitive information types (A) are predefined or custom patterns that detect sensitive data like credit card numbers using regex and checksum validation. Data Loss Prevention policies (B) use these sensitive information types to enforce rules that block external sharing of documents containing credit card numbers in SharePoint Online and Exchange Online. Together, they identify the sensitive content and prevent its unauthorized external distribution.
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.
Sensitive information types.
Why this is correct
They detect patterns such as credit card numbers.
Related concept
Read the scenario before looking for a memorised answer.
Data Loss Prevention policies.
Why this is correct
DLP can enforce restrictions across Exchange, SharePoint, and OneDrive.
Related concept
Read the scenario before looking for a memorised answer.
Microsoft Bookings.
Why it's wrong here
Bookings manages appointment scheduling.
Windows Autopilot.
Why it's wrong here
Autopilot provisions Windows devices, not data loss controls.
Common exam traps
The trap here is that candidates may confuse Microsoft Purview capabilities with unrelated Microsoft 365 services like Bookings or Autopilot, failing to recognize that only sensitive information types and DLP policies directly address content inspection and sharing controls for compliance scenarios.
Detailed technical explanation
Sensitive information types for credit card numbers use Luhn checksum validation and require at least 16 digits, with patterns that match major card issuers (Visa, MasterCard, etc.). DLP policies in Microsoft 365 can be scoped to specific locations (e.g., SharePoint sites, Exchange mailboxes) and configured with actions like blocking external sharing, sending notifications, or triggering incident reports, all evaluated in real-time during content creation or sharing attempts.
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
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..
The correct answer is: Sensitive information types. — Sensitive information types (A) are predefined or custom patterns that detect sensitive data like credit card numbers using regex and checksum validation. Data Loss Prevention policies (B) use these sensitive information types to enforce rules that block external sharing of documents containing credit card numbers in SharePoint Online and Exchange Online. Together, they identify the sensitive content and prevent its unauthorized external distribution.
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 11, 2026
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