The answer is to enable automatic investigation and remediation in Microsoft Defender for Business. This is correct because Defender for Business, included with Microsoft 365 Business Premium, provides built-in automated investigation and remediation capabilities that can isolate an infected device from the network and run a full scan without manual intervention. On the SC-900 exam, this question tests your understanding of how Microsoft 365 security solutions handle threat response versus policy enforcement—a common trap is confusing Intune compliance policies or Conditional Access with automated remediation, but those tools manage access and device health, not active malware response. Remember that antivirus policies set baseline protection, but only automated investigation and remediation triggers the actual isolation and scan workflow. A useful memory tip: think of “AIR” for Automated Investigation and Remediation—when malware hits, Defender for Business takes to the air to isolate and scan automatically.
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. 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.
You work at a mid-sized company that uses Microsoft Defender for Business (a subscription included with Microsoft 365 Business Premium). The company has 300 devices enrolled in Microsoft Intune. Recently, a malware outbreak occurred on several devices. You need to implement a solution that automatically remediates devices that are found to be infected with malware. The solution should isolate the device from the network and run a full scan. Which action should you take?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable automatic investigation and remediation in Microsoft Defender for Business.
Correct: A. Defender for Business includes automated investigation and remediation capabilities. Option B: Intune compliance policies enforce compliance but do not automatically remediate malware. Option C: Conditional Access controls access, not remediation. Option D: Antivirus policies set baseline but do not automate 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.
✗
Create a Conditional Access policy to block access for devices with malware.
Why it's wrong here
Conditional Access blocks access but does not isolate or scan the device.
✗
Create an Intune compliance policy to mark devices as non-compliant if malware is detected.
Why it's wrong here
Compliance policy does not automatically isolate or scan; it just flags non-compliance.
✓
Enable automatic investigation and remediation in Microsoft Defender for Business.
Why this is correct
Defender for Business automatically investigates and remediates threats including isolation and scan.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure Microsoft Defender Antivirus to run a weekly scan.
Why it's wrong here
Weekly scan is not automatic remediation upon detection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-900 question in full detail.
Identify which SC-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable automatic investigation and remediation in Microsoft Defender for Business. — Correct: A. Defender for Business includes automated investigation and remediation capabilities. Option B: Intune compliance policies enforce compliance but do not automatically remediate malware. Option C: Conditional Access controls access, not remediation. Option D: Antivirus policies set baseline but do not automate response.
What should I do if I get this SC-900 question wrong?
Identify which SC-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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