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. A key principle to apply: dLP identifies sensitive information using built-in or custom sensitive information types.. 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 service owner is comparing Microsoft 365 capabilities and needs to block emails containing credit card numbers from being sent externally. Microsoft security, identity, or compliance capability should it use?
Microsoft Planner
Why wrong: Planner manages tasks and does not provide this security or compliance control.
Data Loss Prevention (DLP)
DLP detects sensitive information and can block or warn on sharing actions.
Microsoft Stream
Why wrong: Stream hosts video content and does not meet this requirement.
Microsoft Forms
Why wrong: Forms creates surveys and quizzes, not this security or compliance capability.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Data Loss Prevention (DLP)
Data Loss Prevention (DLP) in Microsoft 365 is the correct capability because it is specifically designed to detect and protect sensitive information, such as credit card numbers, by scanning email content and attachments. DLP policies can be configured to block external transmission of emails containing sensitive data, using built-in sensitive information types like the Credit Card Number rule that matches patterns based on Luhn checksum validation. This directly addresses the service owner's requirement to prevent credit card numbers from being sent externally.
Key principle: DLP identifies sensitive information using built-in or custom sensitive information types.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Planner
Why it's wrong here
Planner manages tasks and does not provide this security or compliance control.
Data Loss Prevention (DLP)
Why this is correct
DLP detects sensitive information and can block or warn on sharing actions.
Related concept
DLP identifies sensitive information using built-in or custom sensitive information types.
Microsoft Stream
Why it's wrong here
Stream hosts video content and does not meet this requirement.
Microsoft Forms
Why it's wrong here
Forms creates surveys and quizzes, not this security or compliance capability.
Common exam traps
The trap here is that candidates may confuse Microsoft 365 compliance tools with unrelated productivity apps, assuming any 'Microsoft' tool can handle security tasks, but only DLP is purpose-built for content-based email restrictions.
Detailed technical explanation
DLP in Microsoft 365 uses over 200 built-in sensitive information types, each defined by a combination of keywords, regex patterns, and checksum algorithms (e.g., the Credit Card Number type validates the Luhn algorithm). When a DLP policy is applied to Exchange Online, it intercepts email messages at the transport layer, scanning subject, body, and attachments (including Office documents and PDFs) before delivery. In a real-world scenario, a DLP rule can be configured to 'Block' the message and send a notification to the sender with a policy tip, while also generating an incident report for compliance auditing.
Key takeaway
DLP identifies sensitive information using built-in or custom sensitive information types.
Real-world example
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.
What to study next
Review dLP identifies sensitive information using built-in or custom sensitive information types., then practise related MS-900 questions on the same topic to reinforce the concept.
Describe security, compliance, privacy, and trust in Microsoft 365 — study guide chapter
Learn the concepts, then practise the questions
Describe security, compliance, privacy, and trust in Microsoft 365 practice questions
Targeted practice on this topic area only
All MS-900 questions
985 questions across all exam domains
Microsoft 365 Fundamentals MS-900 study guide
Full concept coverage aligned to exam objectives
MS-900 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise MS-900 questions linked to Describe Microsoft 365 apps and services.
Practise MS-900 questions linked to Describe Microsoft 365 pricing, licensing, and support.
Practise MS-900 questions linked to Describe cloud concepts.
Practise MS-900 questions linked to Describe security, compliance, privacy, and trust in Microsoft 365.
Practise MS-900 questions linked to Describe Microsoft 365 pricing and support.
Practise MS-900 questions linked to MS-900 fundamentals.
Practise MS-900 questions linked to MS-900 scenario.
Practise MS-900 questions linked to MS-900 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — DLP identifies sensitive information using built-in or custom sensitive information types..
The correct answer is: Data Loss Prevention (DLP) — Data Loss Prevention (DLP) in Microsoft 365 is the correct capability because it is specifically designed to detect and protect sensitive information, such as credit card numbers, by scanning email content and attachments. DLP policies can be configured to block external transmission of emails containing sensitive data, using built-in sensitive information types like the Credit Card Number rule that matches patterns based on Luhn checksum validation. This directly addresses the service owner's requirement to prevent credit card numbers from being sent externally.
Review dLP identifies sensitive information using built-in or custom sensitive information types., then practise related MS-900 questions on the same topic to reinforce the concept.
DLP identifies sensitive information using built-in or custom sensitive information types.
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 →
Last reviewed: Jun 11, 2026
This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.