The answer is to configure device group rules in Microsoft Defender for Endpoint using the OS version condition. This is correct because Defender for Endpoint’s built-in grouping engine evaluates device attributes—such as operating system version—during the onboarding process, allowing you to automatically assign devices to specific groups without manual intervention. For the MD-102 exam, this tests your understanding of automated device management policies, often appearing as a scenario where you must distinguish between dynamic group rules and static manual assignments. A common trap is confusing device group rules with onboarding policies or RBAC scopes; remember that group rules are evaluated at onboarding time, not afterward. Memory tip: think “OS first, group later”—the OS version condition triggers the group assignment as soon as the device checks in, ensuring consistent, hands-free organization.
MD-102 Prepare infrastructure for devices Practice Question
This MD-102 practice question tests your understanding of prepare infrastructure for devices. 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.
Your organization uses Microsoft Defender for Endpoint. You need to ensure that devices onboarding to Microsoft Defender for Endpoint are automatically assigned to a specific device group based on their operating system version. What should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure device group rules in Microsoft Defender for Endpoint using OS version condition.
Device group rules in Microsoft Defender for Endpoint allow you to automatically assign devices to groups based on conditions such as operating system version. This is the correct approach because it uses the built-in grouping engine that evaluates device attributes during onboarding, ensuring consistent and automated assignment without manual intervention.
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.
✗
Manually tag each device in the Microsoft 365 Defender portal.
Why it's wrong here
Manual tagging is not automatic.
✓
Configure device group rules in Microsoft Defender for Endpoint using OS version condition.
Why this is correct
Device group rules can automatically assign devices based on criteria.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Microsoft Entra ID dynamic groups based on device OS.
Why it's wrong here
Entra ID groups are not used by Defender for device grouping.
✗
Create a Microsoft Intune compliance policy that tags devices by OS version.
Why it's wrong here
Compliance policies don't create Defender groups.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Entra ID dynamic groups (which are for identity and access management) with Defender for Endpoint device group rules (which are for security operations and automation), leading them to choose Option C incorrectly.
Detailed technical explanation
How to think about this question
Device group rules in Defender for Endpoint are evaluated during device onboarding and can use conditions like OS version, device name, or domain membership. The rules are processed in order, and the first matching rule assigns the device to the corresponding group, which then determines the configured remediation levels, alert severity, and automation settings. This is distinct from Azure AD dynamic groups, which rely on directory attributes and are evaluated asynchronously.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MD-102 question in full detail.
Prepare infrastructure for devices — This question tests Prepare infrastructure for devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure device group rules in Microsoft Defender for Endpoint using OS version condition. — Device group rules in Microsoft Defender for Endpoint allow you to automatically assign devices to groups based on conditions such as operating system version. This is the correct approach because it uses the built-in grouping engine that evaluates device attributes during onboarding, ensuring consistent and automated assignment without manual intervention.
What should I do if I get this MD-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.
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Question Discussion
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