The answer is enrollment restrictions that block devices by hardware identifier. This is correct because Intune’s enrollment restrictions allow you to create a block rule based on hardware identifiers such as BIOS serial numbers, preventing any device not on the allowed list from enrolling before any policies or compliance checks are applied. On the MD-102 exam, this concept tests your understanding of the enrollment phase versus post-enrollment controls—a common trap is confusing enrollment restrictions with Conditional Access or compliance policies, which only take effect after a device is already enrolled. Remember that BIOS serial numbers are hardware-based, so the filter must be applied at the enrollment gateway, not later. A useful memory tip: “Block before you talk”—enrollment restrictions are the bouncer at the door, while compliance and Conditional Access are the rules inside the club.
MD-102 Manage and maintain devices Practice Question
This MD-102 practice question tests your understanding of manage and maintain devices. 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.
You manage devices with Microsoft Intune. You need to ensure that only devices with a specific BIOS serial number can enroll. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enrollment restrictions that block devices by hardware identifier.
Option D is correct because enrollment restrictions allow you to block devices based on hardware identifiers like BIOS serial numbers. Option A is wrong because compliance policies apply after enrollment. Option B is wrong because Conditional Access applies after enrollment. Option C is wrong because device categories are organizational labels, not hardware-based filters.
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.
✓
Enrollment restrictions that block devices by hardware identifier.
Why this is correct
Enrollment restrictions can block devices based on hardware IDs like BIOS serial numbers.
Related concept
Read the scenario before looking for a memorised answer.
✗
A device category with a dynamic group based on BIOS serial.
Why it's wrong here
Device categories are not used for enrollment blocking.
✗
A device compliance policy that checks BIOS serial number.
Why it's wrong here
Compliance policies cannot block enrollment; they only mark devices noncompliant.
✗
A Conditional Access policy that requires a compliant device.
Why it's wrong here
Conditional Access cannot prevent enrollment; it controls access after enrollment.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 MD-102 question in full detail.
Identify which MD-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Manage and maintain devices — This question tests Manage and maintain devices — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enrollment restrictions that block devices by hardware identifier. — Option D is correct because enrollment restrictions allow you to block devices based on hardware identifiers like BIOS serial numbers. Option A is wrong because compliance policies apply after enrollment. Option B is wrong because Conditional Access applies after enrollment. Option C is wrong because device categories are organizational labels, not hardware-based filters.
What should I do if I get this MD-102 question wrong?
Identify which MD-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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