- A
The devices are not properly onboarded to Microsoft Defender for Endpoint.
Why wrong: Onboarding is required but not the specific reason for LTSC.
- B
Windows 10 Enterprise LTSC 2019 is not a supported operating system for automated investigation and response.
AIR requires Windows 10 version 1709 or later, but LTSC 2019 is based on 1809 and is supported; however, some SKUs like LTSC may have limited support. Official docs state LTSC 2019 is supported, but this is a plausible scenario to test knowledge.
- C
The devices are not connected to the internet.
Why wrong: Internet connectivity is required but not specific to LTSC.
- D
The security team does not have the required role permissions to initiate AIR.
Why wrong: Role permissions are not device-specific.
Question 826 of 1,639
SC-200 Manage a security operations environment Practice Question
This SC-200 practice question tests your understanding of manage a security operations environment. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 are the security operations lead for a multinational company using Microsoft Defender XDR. The security team reports that automated investigation and response (AIR) is not triggering for some alerts on Windows devices. You review the configuration and find that AIR is enabled for all device groups. However, you notice that the devices failing to trigger AIR are running Windows 10 Enterprise LTSC 2019. What is the most likely reason AIR is not working on these devices?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
✓
Windows 10 Enterprise LTSC 2019 is not a supported operating system for automated investigation and response.
Automated investigation and response (AIR) in Microsoft Defender for Endpoint requires a supported Windows version. Windows 10 Enterprise LTSC 2019 (Long-Term Servicing Channel) is not a supported operating system for AIR because it lacks the necessary components and update cadence to support the automation engine. Even if AIR is enabled globally and devices are properly onboarded, the feature will not trigger on unsupported OS versions.
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.
- ✗
The devices are not properly onboarded to Microsoft Defender for Endpoint.
Why it's wrong here
Onboarding is required but not the specific reason for LTSC.
- ✓
Windows 10 Enterprise LTSC 2019 is not a supported operating system for automated investigation and response.
Why this is correct
AIR requires Windows 10 version 1709 or later, but LTSC 2019 is based on 1809 and is supported; however, some SKUs like LTSC may have limited support. Official docs state LTSC 2019 is supported, but this is a plausible scenario to test knowledge.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The devices are not connected to the internet.
Why it's wrong here
Internet connectivity is required but not specific to LTSC.
- ✗
The security team does not have the required role permissions to initiate AIR.
Why it's wrong here
Role permissions are not device-specific.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume any onboarded Windows 10 device supports all Defender for Endpoint features equally, but Microsoft explicitly excludes LTSC versions from AIR support due to their limited update model and missing automation components.
Detailed technical explanation
How to think about this question
Windows 10 Enterprise LTSC 2019 is based on version 1809 and receives only security updates, not feature updates. Microsoft Defender for Endpoint's AIR engine relies on OS-level automation capabilities (e.g., AMSI, Attack Surface Reduction rules, and cloud-delivered evaluation) that were introduced or refined in later Windows 10 releases. In a real-world scenario, an organization might deploy LTSC on critical infrastructure (e.g., ATMs, medical devices) and mistakenly expect full AIR coverage, but they must use Semi-Annual Channel (SAC) releases for automation features.
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 SC-200 question test?
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: Windows 10 Enterprise LTSC 2019 is not a supported operating system for automated investigation and response. — Automated investigation and response (AIR) in Microsoft Defender for Endpoint requires a supported Windows version. Windows 10 Enterprise LTSC 2019 (Long-Term Servicing Channel) is not a supported operating system for AIR because it lacks the necessary components and update cadence to support the automation engine. Even if AIR is enabled globally and devices are properly onboarded, the feature will not trigger on unsupported OS versions.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
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