The answer is Microsoft Defender for Endpoint device control, which is the correct choice because it enables granular policy enforcement for peripheral devices on managed Windows devices by allowing or blocking USB devices based on specific hardware IDs. This feature is part of Microsoft Defender for Endpoint’s broader attack surface reduction capabilities, giving administrators the ability to create custom allow/block rules that restrict all USB devices except those with approved hardware identifiers. On the Microsoft 365 Administrator MS-102 exam, this scenario tests your understanding of device control policies versus broader endpoint security features like attack surface reduction rules or conditional access, with a common trap being to confuse it with Intune device compliance policies. Remember the mnemonic “USB = Device Control, not Compliance” to avoid selecting the wrong answer when you see hardware ID-based restrictions.
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.
An organization wants to allow only specific company-approved USB devices (e.g., those with a specific hardware ID) on managed Windows devices. All other USB devices must be blocked. Which Microsoft 365 Defender feature should be configured?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Defender for Endpoint device control
Microsoft Defender for Endpoint device control is the correct feature because it provides granular control over peripheral devices, including USB devices, based on hardware IDs. It allows administrators to create allow/block policies that enforce restrictions on managed Windows devices, ensuring only company-approved USB devices can be used.
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.
✗
Attack surface reduction rules
Why it's wrong here
ASR rules block malicious actions like running scripts from USB, but do not allow/block specific USB devices by hardware ID.
✓
Microsoft Defender for Endpoint device control
Why this is correct
Device control policies in Defender for Endpoint can restrict USB devices based on hardware IDs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Defender for Cloud Apps session policy
Why it's wrong here
Session policies control access to cloud apps, not local USB hardware.
✗
Conditional Access device compliance
Why it's wrong here
Conditional Access enforces compliance but does not manage USB device policies.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Attack surface reduction rules with device control because both are part of Microsoft Defender for Endpoint, but ASR rules focus on process behaviors, not hardware device access.
Detailed technical explanation
How to think about this question
Device control in Microsoft Defender for Endpoint uses Group Policy or Microsoft Intune to deploy XML-based policies that define allow/block rules for device classes (e.g., USB, CD/DVD) and specific hardware IDs. The policy is enforced by the Microsoft Defender for Endpoint sensor at the kernel level, intercepting Plug and Play events before the device driver loads, which prevents unauthorized USB devices from being recognized by the operating system. In a real-world scenario, an organization can create a policy that allows only USB devices with a specific hardware ID (e.g., VID_1234&PID_5678) and blocks all others, including USB storage, keyboards, or mice.
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 MS-102 question in full detail.
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: Microsoft Defender for Endpoint device control — Microsoft Defender for Endpoint device control is the correct feature because it provides granular control over peripheral devices, including USB devices, based on hardware IDs. It allows administrators to create allow/block policies that enforce restrictions on managed Windows devices, ensuring only company-approved USB devices can be used.
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.
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Question Discussion
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