- A
Implement Privileged Identity Management (PIM) for all accounts. Use Azure Information Protection to classify all emails. Set up a SIEM using Microsoft Sentinel.
Why wrong: PIM and Sentinel are enterprise-grade and overly complex for a small business.
- B
Deploy Microsoft Intune to manage devices. Configure Conditional Access policies to require compliant devices. Use Microsoft Defender for Endpoint for antivirus. Set up a VPN for remote access.
Why wrong: Intune and VPN add complexity beyond what a small business needs.
- C
Purchase Azure AD Premium P2 for all users. Use Identity Protection to detect risks. Configure Conditional Access with session controls. Use Azure AD Identity Governance for access reviews.
Why wrong: Costly and unnecessary; Premium P2 features are beyond basic needs.
- D
Enable Security Defaults in Microsoft Entra ID to enforce MFA for all users. Configure Microsoft Defender for Office 365 to protect against phishing and malware. Use Microsoft Defender for Business (included) for endpoint protection. Regularly review the Microsoft 365 Secure Score and implement top recommendations.
Simple, built-in features that provide strong baseline security.
Quick Answer
The answer is to enable Security Defaults in Microsoft Entra ID, configure Microsoft Defender for Office 365, use Microsoft Defender for Business for endpoint protection, and regularly review the Secure Score. This set of actions is correct because it directly addresses small business Microsoft 365 Business Premium security basics by enforcing multi-factor authentication without complex setup, blocking phishing and malware at the email and endpoint layers, and providing a continuous improvement loop through Secure Score recommendations—all without requiring dedicated IT staff. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how to apply Microsoft’s security best practices for resource-constrained environments, often appearing as a trap where candidates over-engineer with premium licensing or complex conditional access policies. The key insight is that Microsoft 365 Business Premium includes Defender for Business and Security Defaults, making advanced configurations unnecessary. Memory tip: think “MFA, Mail, Machine, Metrics” to recall the four pillars—Multi-Factor Authentication, Microsoft Defender for Office 365, Microsoft Defender for Business, and Secure Score metrics.
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.
Tailwind Traders is a small business that uses Microsoft 365 Business Premium. They have no dedicated IT staff. The owner wants to implement basic security measures to protect against common threats like phishing, ransomware, and unauthorized access. They need a simple, cost-effective solution that aligns with Microsoft's security best practices for small businesses. Which set of actions should you recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Enable Security Defaults in Microsoft Entra ID to enforce MFA for all users. Configure Microsoft Defender for Office 365 to protect against phishing and malware. Use Microsoft Defender for Business (included) for endpoint protection. Regularly review the Microsoft 365 Secure Score and implement top recommendations.
Option D is correct because it aligns with Microsoft's security best practices for small businesses with no dedicated IT staff. Security Defaults in Microsoft Entra ID provide a baseline of MFA enforcement without requiring complex configuration. Microsoft Defender for Office 365 and Defender for Business (included in Microsoft 365 Business Premium) offer integrated phishing, malware, and endpoint protection. Regularly reviewing the Secure Score ensures continuous improvement against common threats like ransomware and unauthorized access.
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.
- ✗
Implement Privileged Identity Management (PIM) for all accounts. Use Azure Information Protection to classify all emails. Set up a SIEM using Microsoft Sentinel.
Why it's wrong here
PIM and Sentinel are enterprise-grade and overly complex for a small business.
- ✗
Deploy Microsoft Intune to manage devices. Configure Conditional Access policies to require compliant devices. Use Microsoft Defender for Endpoint for antivirus. Set up a VPN for remote access.
Why it's wrong here
Intune and VPN add complexity beyond what a small business needs.
- ✗
Purchase Azure AD Premium P2 for all users. Use Identity Protection to detect risks. Configure Conditional Access with session controls. Use Azure AD Identity Governance for access reviews.
Why it's wrong here
Costly and unnecessary; Premium P2 features are beyond basic needs.
- ✓
Enable Security Defaults in Microsoft Entra ID to enforce MFA for all users. Configure Microsoft Defender for Office 365 to protect against phishing and malware. Use Microsoft Defender for Business (included) for endpoint protection. Regularly review the Microsoft 365 Secure Score and implement top recommendations.
Why this is correct
Simple, built-in features that provide strong baseline security.
Clue confirmation
The clue word "best" in the question point toward this answer.
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 over-engineer the solution by selecting advanced identity or endpoint management options (like PIM, Intune, or Azure AD Premium P2) that are technically valid but inappropriate for a small business with no IT staff, ignoring the cost and complexity constraints explicitly stated in the scenario.
Detailed technical explanation
How to think about this question
Security Defaults in Microsoft Entra ID enforce MFA for all users using the Authenticator app or SMS, blocking legacy authentication protocols like POP3 and IMAP that are common attack vectors for credential theft. Microsoft Defender for Office 365 uses machine learning models in Exchange Online Protection (EOP) and Safe Links/Attachments to detect zero-day phishing and malware in real-time. The Microsoft Secure Score aggregates telemetry from across the tenant and provides actionable recommendations prioritized by impact, allowing a non-technical owner to systematically reduce risk without manual analysis.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable Security Defaults in Microsoft Entra ID to enforce MFA for all users. Configure Microsoft Defender for Office 365 to protect against phishing and malware. Use Microsoft Defender for Business (included) for endpoint protection. Regularly review the Microsoft 365 Secure Score and implement top recommendations. — Option D is correct because it aligns with Microsoft's security best practices for small businesses with no dedicated IT staff. Security Defaults in Microsoft Entra ID provide a baseline of MFA enforcement without requiring complex configuration. Microsoft Defender for Office 365 and Defender for Business (included in Microsoft 365 Business Premium) offer integrated phishing, malware, and endpoint protection. Regularly reviewing the Secure Score ensures continuous improvement against common threats like ransomware and unauthorized access.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This SC-100 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-100 exam.
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