SC-100 Practice Question: Design solutions that align with security best practices and priorities
This SC-100 practice question tests your understanding of design solutions that align with security best practices and priorities. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 is implementing a Zero Trust security model. Which Microsoft security solution should you use to enforce conditional access policies based on user, device, location, and real-time risk signals?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Microsoft Entra ID Conditional Access
Microsoft Entra ID Conditional Access is the correct solution because it is the native policy engine in Azure AD that evaluates signals from user identity, device compliance, location (IP ranges or countries), and real-time risk from Microsoft Entra ID Protection to enforce access decisions. It directly implements the 'explicit verification' and 'assume breach' principles of Zero Trust by blocking or requiring step-up authentication based on these dynamic conditions.
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.
✓
Microsoft Entra ID Conditional Access
Why this is correct
Microsoft Entra ID Conditional Access enforces access control decisions based on conditions and signals.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Defender for Cloud Apps
Why it's wrong here
Microsoft Defender for Cloud Apps is a CASB for cloud app security, not for conditional access policies.
✗
Microsoft Intune
Why it's wrong here
Microsoft Intune is for mobile device management (MDM) and mobile application management (MAM), not conditional access.
✗
Microsoft Purview
Why it's wrong here
Microsoft Purview provides data governance, risk, and compliance solutions, not access policy enforcement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Defender for Cloud Apps as the primary policy enforcement point because of its session monitoring capabilities, but it is actually a downstream consumer of Conditional Access decisions, not the engine that evaluates user, device, location, and risk signals in real time.
Detailed technical explanation
How to think about this question
Under the hood, Conditional Access policies are evaluated during the authentication request to Microsoft Entra ID, where the policy engine checks conditions like 'Sign-In Risk' (from Entra ID Protection's real-time risk detection using machine learning) and 'Device Compliance' (via Intune's compliance policies reported through the Device Registration Service). A subtle behavior is that Conditional Access can enforce session controls like 'Use app-enforced restrictions' or 'Require compliant device' only after the token is issued, but the primary access decision (block or grant) happens before token issuance, making it a true Zero Trust gate.
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-100 question in full detail.
Design solutions that align with security best practices and priorities — This question tests Design solutions that align with security best practices and priorities — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Entra ID Conditional Access — Microsoft Entra ID Conditional Access is the correct solution because it is the native policy engine in Azure AD that evaluates signals from user identity, device compliance, location (IP ranges or countries), and real-time risk from Microsoft Entra ID Protection to enforce access decisions. It directly implements the 'explicit verification' and 'assume breach' principles of Zero Trust by blocking or requiring step-up authentication based on these dynamic conditions.
What should I do if I get this SC-100 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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