The answer is verifying explicitly based on all available data points, such as user identity, device health, and location. This is correct because Zero Trust eliminates implicit trust and requires continuous validation of every access request; Microsoft 365 Defender operationalizes this by aggregating signals across endpoints, identities, and cloud apps to enforce conditional access decisions in real time. On the Microsoft Cybersecurity Architect exam, this principle tests your understanding of how Defender’s correlation engine feeds into Azure AD Conditional Access policies, with a common trap being to confuse “verify explicitly” with simple multi-factor authentication—remember that explicit verification must consider dynamic risk signals, not just a static password. A memory tip: think of the acronym “V.E.D.”—Verify Explicitly using all Data points—to distinguish this from the other two core Zero Trust pillars of least privilege and assume breach.
SC-100 Practice Question: Evaluate GRC and security operations strategies
This SC-100 practice question tests your understanding of evaluate grc and security operations strategies. 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.
A company is implementing a Zero Trust security model using Microsoft 365 Defender. Which THREE of the following are key principles they should follow?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use least privilege access by limiting user permissions with Just-In-Time and Just-Enough-Access.
Option B is correct because Zero Trust mandates least privilege access, and Microsoft 365 Defender integrates with Azure AD Privileged Identity Management (PIM) to enforce Just-In-Time (JIT) and Just-Enough-Access (JEA) policies. This ensures users receive only the permissions necessary for a specific task, for a limited duration, reducing the risk of lateral movement and privilege escalation.
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.
✗
Trust all traffic originating from within the corporate network.
Why it's wrong here
Zero Trust assumes no implicit trust, even inside the network.
✓
Use least privilege access by limiting user permissions with Just-In-Time and Just-Enough-Access.
Read the scenario before looking for a memorised answer.
✗
Provide implicit trust to known users and devices.
Why it's wrong here
Zero Trust requires continuous verification, not implicit trust.
✓
Assume breach and segment access to minimize blast radius.
Why this is correct
Design for breach containment.
Related concept
Read the scenario before looking for a memorised answer.
✓
Verify explicitly based on all available data points (user, device, location, etc.).
Why this is correct
Zero Trust requires explicit verification for each access request.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Zero Trust with traditional perimeter-based security, mistakenly believing that internal network origin or known user status should be trusted implicitly, when in fact Zero Trust requires explicit verification for every access request regardless of source.
Detailed technical explanation
How to think about this question
Under the hood, Microsoft 365 Defender leverages Azure AD Conditional Access to evaluate signals such as user risk (from Identity Protection), device compliance (from Intune), and real-time threat intelligence (from Microsoft Defender for Endpoint) before granting access. In a real-world scenario, an attacker who compromises a known user's credentials would still be blocked if the device fails compliance checks or the sign-in is flagged as anomalous, demonstrating the 'verify explicitly' principle in action.
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.
Evaluate GRC and security operations strategies — This question tests Evaluate GRC and security operations strategies — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use least privilege access by limiting user permissions with Just-In-Time and Just-Enough-Access. — Option B is correct because Zero Trust mandates least privilege access, and Microsoft 365 Defender integrates with Azure AD Privileged Identity Management (PIM) to enforce Just-In-Time (JIT) and Just-Enough-Access (JEA) policies. This ensures users receive only the permissions necessary for a specific task, for a limited duration, reducing the risk of lateral movement and privilege escalation.
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.
About these practice questions
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Variation 1. A multinational company is implementing a Zero Trust security model. The security team needs to ensure that all access requests to critical applications are evaluated based on user identity, device health, and real-time risk signals. Which Microsoft solution should they use to centralize policy enforcement?
medium
A.Microsoft Defender for Cloud Apps
✓ B.Microsoft Entra Conditional Access
C.Azure AD Identity Protection
D.Microsoft Purview Compliance Manager
Why B: Correct answer is C: Microsoft Entra Conditional Access. It evaluates signals like user, device, and location to enforce access policies. Option A (Microsoft Defender for Cloud Apps) is a CASB, not a policy enforcement point for authentication. Option B (Microsoft Purview Compliance Manager) is for compliance scores. Option D (Azure AD Identity Protection) identifies risks but does not enforce access policies directly.
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Question Discussion
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