- A
Microsoft Intune
Why wrong: Intune is for device management, not security investigation.
- B
Microsoft Sentinel
Why wrong: Sentinel is a SIEM, not the unified console in Microsoft 365.
- C
Microsoft Purview Compliance Portal
Why wrong: Purview is for compliance, not security incident investigation.
- D
Microsoft Defender XDR
Defender XDR integrates signals across email, endpoints, and identities.
Question 516 of 985
Describe security, compliance, privacy, and trust in Microsoft 365 →easyMultiple ChoiceObjective-mapped
Microsoft Defender XDR for Unified Incident Investigation
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 company is adopting Microsoft 365 and wants to ensure they can investigate security incidents across email, endpoints, and identities in a unified console. Which Microsoft 365 workload should they use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Defender XDR
Microsoft Defender XDR (Extended Detection and Response) is the correct choice because it provides a unified console for investigating security incidents across email, endpoints, and identities. It correlates alerts from Microsoft Defender for Endpoint, Defender for Office 365, Defender for Identity, and Defender for Cloud Apps into a single incident queue, enabling cross-domain threat hunting and automated response.
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 Intune
Why it's wrong here
Intune is for device management, not security investigation.
- ✗
Microsoft Sentinel
Why it's wrong here
Sentinel is a SIEM, not the unified console in Microsoft 365.
- ✗
Microsoft Purview Compliance Portal
Why it's wrong here
Purview is for compliance, not security incident investigation.
- ✓
Microsoft Defender XDR
Why this is correct
Defender XDR integrates signals across email, endpoints, and identities.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Sentinel (a SIEM) with Microsoft Defender XDR (an XDR), but Sentinel is for ingesting logs from any source and requires manual correlation, while Defender XDR provides native, automated cross-domain incident correlation specifically for Microsoft 365 workloads.
Detailed technical explanation
How to think about this question
Under the hood, Microsoft Defender XDR uses the Microsoft 365 Defender API to aggregate signals from the Defender suite, employing machine learning models to correlate alerts into incidents with automated investigation and response (AIR) playbooks. In a real-world scenario, if a phishing email triggers a credential theft alert in Defender for Office 365 and a suspicious login is detected by Defender for Identity, Defender XDR automatically merges these into a single incident, showing the full attack chain in one console.
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 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
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this MS-900 question test?
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 Defender XDR — Microsoft Defender XDR (Extended Detection and Response) is the correct choice because it provides a unified console for investigating security incidents across email, endpoints, and identities. It correlates alerts from Microsoft Defender for Endpoint, Defender for Office 365, Defender for Identity, and Defender for Cloud Apps into a single incident queue, enabling cross-domain threat hunting and automated response.
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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Last reviewed: Jul 4, 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.
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