- A
Set the automation level for device isolation to 'Full - automatically remediate threats' in the Advanced Features settings.
The automation level controls whether AIR actions like device isolation are executed automatically. 'Full - automatically remediate' allows automatic isolation without manual approval.
- B
Create a custom detection rule that triggers on high-severity alerts and uses an automated action.
Why wrong: Custom detection rules can trigger actions, but they do not replace the built-in AIR playbook automation level. The automation level must be set to 'Full' for automatic device isolation.
- C
Configure the device isolation action to require approval in the automation level settings.
Why wrong: Requiring approval means manual intervention is needed before isolation occurs, contradicting the requirement to run without manual approval.
- D
Enable automatic remediation only for medium severity and above.
Why wrong: This setting may not include high-severity alerts if the automation level is not set to full automatic remediation. The requirement is specifically for high-severity alerts to be automatically isolated.
MS-102 Practice Question: Manage security and threats by using Microsoft Defender XDR
This MS-102 practice question tests your understanding of manage security and threats by using microsoft defender xdr. 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. 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 security administrator needs to configure an automated investigation and response (AIR) playbook in Microsoft 365 Defender that will automatically isolate a device whenever a high-severity alert from Microsoft Defender for Endpoint is generated. The playbook must run without requiring manual approval. Which configuration must the administrator set to achieve automatic device isolation?
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
Set the automation level for device isolation to 'Full - automatically remediate threats' in the Advanced Features settings.
Option A is correct because the automation level for device isolation in Microsoft 365 Defender's Advanced Features settings controls whether the AIR playbook executes actions automatically. Setting it to 'Full - automatically remediate threats' ensures that when a high-severity alert triggers the playbook, device isolation is performed without requiring manual approval, meeting the requirement for fully 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.
- ✓
Set the automation level for device isolation to 'Full - automatically remediate threats' in the Advanced Features settings.
Why this is correct
The automation level controls whether AIR actions like device isolation are executed automatically. 'Full - automatically remediate' allows automatic isolation without manual approval.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a custom detection rule that triggers on high-severity alerts and uses an automated action.
Why it's wrong here
Custom detection rules can trigger actions, but they do not replace the built-in AIR playbook automation level. The automation level must be set to 'Full' for automatic device isolation.
- ✗
Configure the device isolation action to require approval in the automation level settings.
Why it's wrong here
Requiring approval means manual intervention is needed before isolation occurs, contradicting the requirement to run without manual approval.
- ✗
Enable automatic remediation only for medium severity and above.
Why it's wrong here
This setting may not include high-severity alerts if the automation level is not set to full automatic remediation. The requirement is specifically for high-severity alerts to be automatically isolated.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse custom detection rules (Option B) with built-in AIR automation levels, or mistakenly think that enabling automatic remediation for a severity range (Option D) automatically applies to all actions, when in fact each action type must be individually configured for full automation.
Detailed technical explanation
How to think about this question
The automation level settings in Microsoft 365 Defender are granular per action type (e.g., isolate device, quarantine file) and can be set to 'Full', 'Semi - require approval', or 'No automated response'. When set to 'Full', the AIR playbook automatically executes the action upon alert generation, leveraging the underlying Microsoft Defender for Endpoint sensor to initiate device isolation via the Windows Defender security center API. In a real-world scenario, this ensures rapid containment of compromised devices, reducing dwell time and lateral movement.
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 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
Questions learners often ask
What does this MS-102 question test?
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set the automation level for device isolation to 'Full - automatically remediate threats' in the Advanced Features settings. — Option A is correct because the automation level for device isolation in Microsoft 365 Defender's Advanced Features settings controls whether the AIR playbook executes actions automatically. Setting it to 'Full - automatically remediate threats' ensures that when a high-severity alert triggers the playbook, device isolation is performed without requiring manual approval, meeting the requirement for fully automated response.
What should I do if I get this MS-102 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.
About these practice questions
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Last reviewed: Jun 11, 2026
This MS-102 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-102 exam.
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