The answer is to create a Microsoft Sentinel automation rule with a playbook that isolates the device and updates the incident. This is the most efficient approach because it combines Azure Logic Apps with Sentinel’s automation capabilities to execute a predefined workflow—triggered automatically when a compromise is detected—that calls Microsoft Defender for Endpoint APIs to isolate the device and then writes the isolation status back to the Sentinel incident, eliminating manual steps. On the SC-200 exam, this scenario tests your understanding of how automation rules and playbooks bridge detection and response across Microsoft 365 Defender and Sentinel; a common trap is choosing a manual isolation step or a separate MDE action rule, which lacks the integrated incident update. Remember the memory tip: “Playbook pulls the plug and posts the update”—the playbook both isolates (pulls the plug) and updates the incident (posts the update) in one automated flow.
SC-200 Manage a security operations environment Practice Question
This SC-200 practice question tests your understanding of manage a security operations environment. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Your company uses Microsoft Defender for Endpoint (MDE) and Microsoft Sentinel. You need to ensure that when a device is determined to be compromised, the device is automatically isolated from the network and a Sentinel incident is updated with the isolation status. What is the most efficient way to achieve this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a Microsoft Sentinel automation rule with a playbook that isolates the device and updates the incident
Option D is correct because it leverages Microsoft Sentinel's automation capabilities to respond to security incidents without manual intervention. By creating an automation rule that triggers a playbook (an Azure Logic Apps workflow), you can automatically isolate a compromised device via Microsoft Defender for Endpoint APIs and simultaneously update the Sentinel incident with the isolation status. This provides the most efficient, end-to-end automated response directly within the security operations workflow.
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.
✗
Have the SOC analyst manually isolate the device from the MDE console and update the incident in Sentinel
Why it's wrong here
Manual process is not efficient.
✗
Configure Microsoft Intune to automatically isolate the device when a compliance policy is violated
Why it's wrong here
Intune is for management, not real-time isolation based on security alerts.
✗
Use Microsoft Defender XDR conditional access to block the device
Why it's wrong here
Conditional access blocks access, but does not isolate the device from the network.
✓
Create a Microsoft Sentinel automation rule with a playbook that isolates the device and updates the incident
Why this is correct
This automates the response and updates the incident in Sentinel.
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 may confuse Microsoft Intune compliance policies or conditional access with automated incident response actions, not realizing that only a Sentinel automation rule with a playbook can directly orchestrate both device isolation and incident update in a single, efficient workflow.
Detailed technical explanation
How to think about this question
The playbook in Option D uses the Microsoft Defender for Endpoint connector in Azure Logic Apps to call the 'Isolate machine' API action, which sends a network isolation command to the device via the Defender for Endpoint agent. The same playbook then uses the Sentinel connector to update the incident properties (e.g., adding a comment or changing the status) via the Azure Resource Graph or Sentinel API. This automation can be triggered by a Sentinel automation rule that matches specific incident criteria, such as when an incident is created with a high severity and contains a device isolation alert.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Manage a security operations environment — This question tests Manage a security operations environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a Microsoft Sentinel automation rule with a playbook that isolates the device and updates the incident — Option D is correct because it leverages Microsoft Sentinel's automation capabilities to respond to security incidents without manual intervention. By creating an automation rule that triggers a playbook (an Azure Logic Apps workflow), you can automatically isolate a compromised device via Microsoft Defender for Endpoint APIs and simultaneously update the Sentinel incident with the isolation status. This provides the most efficient, end-to-end automated response directly within the security operations workflow.
What should I do if I get this SC-200 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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