- A
Implement Microsoft Defender for Cloud Apps to discover and control SaaS apps. Use Conditional Access with app control. Deploy Microsoft Purview Data Lifecycle Management. Use Azure Sentinel for monitoring.
Why wrong: Missing identity protection and phishing prevention.
- B
Implement Microsoft Entra ID Protection to detect and block risky sign-ins. Use Conditional Access policies to require MFA and block legacy authentication. Use Microsoft Purview sensitivity labels to classify data and Azure Monitor to collect logs.
Why wrong: Missing phishing prevention (Defender for Office 365) and automated response (Sentinel).
- C
Implement Microsoft Defender for Office 365 to block phishing emails. Use Conditional Access policies with session risk to enforce access controls. Deploy Microsoft Purview DLP and sensitivity labels to protect data. Use Microsoft Sentinel with automation rules and playbooks to detect and respond to incidents.
Covers all requirements: phishing block, least privilege, data protection, and automated response.
- D
Implement Microsoft Defender for Identity to detect on-premises threats. Use Conditional Access with device compliance policies. Deploy Microsoft Purview Information Protection. Use Azure Security Center for monitoring.
Why wrong: Missing phishing prevention and automated response; Azure Security Center is not a SIEM.
Quick Answer
The correct combination is Microsoft Defender for Office 365, Conditional Access with session risk, Microsoft Purview DLP and sensitivity labels, and Microsoft Sentinel with automation. This solution directly maps to Zero Trust principles by using Defender for Office 365 to verify explicitly and block phishing in real time, Conditional Access to enforce least privilege based on session risk, Purview to protect data at rest and in transit with labels and DLP, and Sentinel to assume breach through continuous monitoring and automated incident response. On the Microsoft Cybersecurity Architect exam, this question tests your ability to integrate identity, email, data, and SIEM layers rather than relying on a single tool; a common trap is choosing Azure AD Identity Protection alone, which lacks data protection and phishing prevention. Remember the mnemonic “IDPS” — Identity (Conditional Access), Defender (phishing), Purview (data), Sentinel (monitoring) — to recall the four required pillars for a complete Zero Trust implementation.
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. 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 are a security architect for a large multinational organization that uses Microsoft 365, Azure, and third-party SaaS applications. The organization has recently experienced a breach where an attacker compromised a user account via a phishing email and then used that account to access sensitive data in SharePoint Online and exfiltrate it via email. The security team wants to implement a comprehensive solution that aligns with the Zero Trust principles of 'verify explicitly', 'use least privilege', and 'assume breach'. You need to design a solution that includes identity protection, conditional access, data protection, and continuous monitoring. You have the following requirements: 1. Block phishing attacks in real time. 2. Enforce least privilege access to sensitive data. 3. Detect and respond to anomalous user behavior. 4. Protect data at rest and in transit. 5. Enable automated response to incidents. Which combination of Microsoft security services and configurations should you recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"least"Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Implement Microsoft Defender for Office 365 to block phishing emails. Use Conditional Access policies with session risk to enforce access controls. Deploy Microsoft Purview DLP and sensitivity labels to protect data. Use Microsoft Sentinel with automation rules and playbooks to detect and respond to incidents.
Option B is correct because it combines Microsoft Defender for Office 365 to block phishing, Conditional Access with risk policies to enforce least privilege, Microsoft Purview DLP and sensitivity labels to protect data, and Microsoft Sentinel with automation to detect and respond. Option A is wrong because it uses Azure AD (now Entra ID) Identity Protection but lacks DLP and monitoring. Option C is wrong because it does not include phishing prevention. Option D is wrong because it uses Microsoft Defender for Cloud Apps alone, which is insufficient for email and identity protection.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Implement Microsoft Defender for Cloud Apps to discover and control SaaS apps. Use Conditional Access with app control. Deploy Microsoft Purview Data Lifecycle Management. Use Azure Sentinel for monitoring.
Why it's wrong here
Missing identity protection and phishing prevention.
- ✗
Implement Microsoft Entra ID Protection to detect and block risky sign-ins. Use Conditional Access policies to require MFA and block legacy authentication. Use Microsoft Purview sensitivity labels to classify data and Azure Monitor to collect logs.
Why it's wrong here
Missing phishing prevention (Defender for Office 365) and automated response (Sentinel).
- ✓
Implement Microsoft Defender for Office 365 to block phishing emails. Use Conditional Access policies with session risk to enforce access controls. Deploy Microsoft Purview DLP and sensitivity labels to protect data. Use Microsoft Sentinel with automation rules and playbooks to detect and respond to incidents.
Why this is correct
Covers all requirements: phishing block, least privilege, data protection, and automated response.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Authentication checks who the user is.
- ✗
Implement Microsoft Defender for Identity to detect on-premises threats. Use Conditional Access with device compliance policies. Deploy Microsoft Purview Information Protection. Use Azure Security Center for monitoring.
Why it's wrong here
Missing phishing prevention and automated response; Azure Security Center is not a SIEM.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.
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Design solutions that align with security best practices and priorities — study guide chapter
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FAQ
Questions learners often ask
What does this SC-100 question test?
Design solutions that align with security best practices and priorities — This question tests Design solutions that align with security best practices and priorities — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Implement Microsoft Defender for Office 365 to block phishing emails. Use Conditional Access policies with session risk to enforce access controls. Deploy Microsoft Purview DLP and sensitivity labels to protect data. Use Microsoft Sentinel with automation rules and playbooks to detect and respond to incidents. — Option B is correct because it combines Microsoft Defender for Office 365 to block phishing, Conditional Access with risk policies to enforce least privilege, Microsoft Purview DLP and sensitivity labels to protect data, and Microsoft Sentinel with automation to detect and respond. Option A is wrong because it uses Azure AD (now Entra ID) Identity Protection but lacks DLP and monitoring. Option C is wrong because it does not include phishing prevention. Option D is wrong because it uses Microsoft Defender for Cloud Apps alone, which is insufficient for email and identity protection.
What should I do if I get this SC-100 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Authentication checks who the user is.
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Same concept, more angles
5 more ways this is tested on SC-100
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Your organization is implementing a Zero Trust network architecture in Azure. Which TWO principles are foundational to Zero Trust?
easy- A.Use network segmentation
- ✓ B.Verify explicitly
- ✓ C.Assume breach
- D.Rely on perimeter security
- E.Trust but verify
Why B: Option B is correct because 'Verify explicitly' is a core principle of Zero Trust, which mandates that every access request must be authenticated and authorized based on all available data points (e.g., user identity, device health, location) before granting access. This eliminates implicit trust based solely on network location, aligning with Azure's conditional access policies and Microsoft Entra ID authentication.
Variation 2. A company is designing a Zero Trust architecture for their hybrid identity environment. They plan to require multifactor authentication (MFA) for all users accessing sensitive applications. Which Microsoft Entra ID capability should they use to enforce MFA based on risk level?
easy- A.Self-service password reset
- B.Microsoft Entra Privileged Identity Management
- ✓ C.Conditional Access
- D.Microsoft Entra ID Protection
Why C: Option D is correct because Conditional Access policies can enforce MFA based on sign-in risk and user risk. Option A is wrong because Identity Protection detects risks but doesn't enforce access controls by itself. Option B is wrong because PIM manages roles, not access conditions. Option C is wrong because SSPR is unrelated to MFA enforcement.
Variation 3. You are designing a Zero Trust architecture for a company that uses Microsoft Entra ID and Microsoft Intune. The security team wants to enforce device compliance before granting access to cloud apps. Which policy should you implement?
medium- A.Microsoft Entra Identity Protection user risk policy
- B.Microsoft Defender for Cloud Apps session policy
- ✓ C.Microsoft Entra Conditional Access policy requiring compliant device
- D.Azure AD Identity Protection sign-in risk policy
Why C: Option C is correct because Microsoft Entra Conditional Access policies can require that devices are marked as compliant by Microsoft Intune before granting access to cloud apps. This directly enforces device compliance as a condition for access, which is a core Zero Trust principle of verifying every access request based on device health.
Variation 4. A company plans to implement a Zero Trust architecture using Microsoft security solutions. They want to ensure that all access to corporate resources is verified explicitly, uses least privilege, and assumes breach. Which Microsoft service should be the central policy engine for enforcing conditional access decisions?
medium- ✓ A.Microsoft Entra ID Conditional Access
- B.Microsoft Defender for Cloud
- C.Microsoft Sentinel
- D.Microsoft Intune
Why A: Microsoft Entra ID Conditional Access is the correct central policy engine because it directly enforces Zero Trust principles by evaluating signals (user, device, location, risk) in real time to grant or block access. It acts as the policy decision point (PDP) that enforces explicit verification, least privilege, and assumes breach by requiring continuous authentication and authorization for every access request.
Variation 5. Which THREE components are part of the Microsoft Zero Trust architecture? (Choose three.)
medium- ✓ A.Networks
- ✓ B.Devices
- C.Data
- D.Applications
- ✓ E.Identities
Why A: Networks are a core component of the Microsoft Zero Trust architecture because the model assumes that the network is always hostile and should not be implicitly trusted. Instead of relying on a traditional perimeter, Zero Trust enforces micro-segmentation, real-time threat protection, and end-to-end encryption to control traffic between resources. Microsoft implements this through Azure Firewall, Azure Virtual Network security groups, and Microsoft Defender for Cloud to monitor and filter network traffic based on identity and device posture.
Last reviewed: Jun 21, 2026
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