SC-900 Describe the capabilities of Microsoft Entra Practice Question
This SC-900 practice question tests your understanding of describe the capabilities of microsoft entra. 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 company uses Microsoft Entra ID. They have a financial application that should only be accessible from Windows devices. The security team wants to create a Conditional Access policy to block access from other operating systems such as macOS or Linux. Which assignment condition should they configure?
Why wrong: The Locations condition is used to control access based on the user's network location (such as an IP range), not the device's operating system.
B
Device platforms
The Device platforms condition allows you to specify the operating system of the device. Setting it to 'Windows' will block access from macOS, Linux, and other platforms.
C
Client apps
Why wrong: The Client apps condition is used to control access based on the application type (e.g., browser, mobile app, desktop client), not the device operating system.
D
Sign-in risk
Why wrong: The Sign-in risk condition uses risk levels calculated by Microsoft Entra ID Protection (e.g., low, medium, high) to control access, not the device platform.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Device platforms
The Device platforms condition in a Conditional Access policy allows administrators to target specific operating systems (e.g., Windows, iOS, Android, macOS) or block others. By configuring this condition to only include Windows devices, the policy will block access from macOS, Linux, or any other non-Windows platform. This directly addresses the security team's requirement to restrict the financial application to Windows devices only.
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.
✗
Locations
Why it's wrong here
The Locations condition is used to control access based on the user's network location (such as an IP range), not the device's operating system.
✓
Device platforms
Why this is correct
The Device platforms condition allows you to specify the operating system of the device. Setting it to 'Windows' will block access from macOS, Linux, and other platforms.
Related concept
Read the scenario before looking for a memorised answer.
✗
Client apps
Why it's wrong here
The Client apps condition is used to control access based on the application type (e.g., browser, mobile app, desktop client), not the device operating system.
✗
Sign-in risk
Why it's wrong here
The Sign-in risk condition uses risk levels calculated by Microsoft Entra ID Protection (e.g., low, medium, high) to control access, not the device platform.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Device platforms with Client apps, thinking that blocking 'mobile apps' or 'browsers' would restrict the OS, but Client apps only controls the type of application client, not the underlying operating system.
Detailed technical explanation
How to think about this question
The Device platforms condition evaluates the User-Agent header or device claim from the token to determine the OS (e.g., 'Windows NT 10.0' vs. 'Mac OS X'). Under the hood, Conditional Access policies are evaluated at the time of token issuance; if the device platform does not match the configured policy, the request is blocked before any application access is granted. A real-world nuance: Linux devices may not be explicitly listed in the policy's platform list, but they will be blocked if only Windows is selected, as the condition operates on an allow-list model.
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 SC-900 question in full detail.
Describe the capabilities of Microsoft Entra — This question tests Describe the capabilities of Microsoft Entra — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Device platforms — The Device platforms condition in a Conditional Access policy allows administrators to target specific operating systems (e.g., Windows, iOS, Android, macOS) or block others. By configuring this condition to only include Windows devices, the policy will block access from macOS, Linux, or any other non-Windows platform. This directly addresses the security team's requirement to restrict the financial application to Windows devices only.
What should I do if I get this SC-900 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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