- A
Use Azure Firewall to filter traffic, implement client certificate authentication in APIM, and use Azure Monitor for logging.
Why wrong: Azure Firewall does not protect against web application attacks. Client certificate authentication is not as flexible as OAuth.
- B
Use Azure API Management with built-in WAF, configure OAuth 2.0 authorization with Microsoft Entra ID, and enable Azure Monitor and Log Analytics for logging and alerting.
APIM WAF protects against OWASP threats, OAuth 2.0 provides secure authentication and authorization, and Monitor/Log Analytics provide comprehensive logging.
- C
Use Azure Application Gateway with WAF in front of APIM, configure IP whitelisting on APIM, and enable diagnostic settings to send logs to a storage account.
Why wrong: IP whitelisting does not provide authentication. Storage account logs are not ideal for real-time monitoring.
- D
Use Azure Front Door with WAF in front of APIM, configure IP whitelisting on APIM, and use Microsoft Sentinel for logging.
Why wrong: IP whitelisting is not a robust authentication method. Sentinel is overkill for simple logging; Monitor is sufficient.
Quick Answer
The answer is to combine Azure API Management with its built-in WAF, OAuth 2.0 authorization with Microsoft Entra ID, and Azure Monitor with Log Analytics for logging. This works because the Web Application Firewall (WAF) on APIM directly protects the public-facing API from OWASP top 10 threats like SQL injection and XSS at the application layer, while OAuth 2.0 with Entra ID ensures only authenticated users with the correct role can place orders containing PII. On the Microsoft Cybersecurity Architect exam, this scenario tests your ability to layer security controls without redundancy—a common trap is choosing IP whitelisting or NSGs, which fail to handle authentication or application-layer attacks, or doubling up on WAFs with Application Gateway. The key is remembering that APIM’s native WAF covers web vulnerabilities, Entra ID handles identity, and Azure Monitor/Log Analytics provides the required audit trail. Memory tip: think “WAF + OAuth + Logs” as the three-legged stool for securing any public API.
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. 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 multinational retail company, Northwind Traders, is building a new e-commerce platform on Azure. The platform includes a public-facing API built on Azure API Management (APIM) that processes orders containing personal data (PII). The company uses Microsoft Entra ID for identity management. You need to design a security solution that protects the API from common web vulnerabilities (e.g., SQL injection, XSS) and ensures that only authenticated users with the appropriate role can place orders. Additionally, you need to log and monitor all API requests for security auditing. Which combination of services should you use?
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
Use Azure API Management with built-in WAF, configure OAuth 2.0 authorization with Microsoft Entra ID, and enable Azure Monitor and Log Analytics for logging and alerting.
Option C is correct because Azure Web Application Firewall (WAF) on APIM protects against OWASP top 10 threats, OAuth 2.0 with Entra ID provides authentication and authorization, and Azure Monitor and Log Analytics provide logging and monitoring. Option A is wrong because NSGs do not protect against application-layer attacks. Option B is wrong because IP whitelisting does not handle authentication/authorization. Option D is wrong because Application Gateway WAF is redundant if APIM WAF is used, and IP whitelisting is not suitable.
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.
- ✗
Use Azure Firewall to filter traffic, implement client certificate authentication in APIM, and use Azure Monitor for logging.
Why it's wrong here
Azure Firewall does not protect against web application attacks. Client certificate authentication is not as flexible as OAuth.
- ✓
Use Azure API Management with built-in WAF, configure OAuth 2.0 authorization with Microsoft Entra ID, and enable Azure Monitor and Log Analytics for logging and alerting.
Why this is correct
APIM WAF protects against OWASP threats, OAuth 2.0 provides secure authentication and authorization, and Monitor/Log Analytics provide comprehensive logging.
Related concept
Authentication checks who the user is.
- ✗
Use Azure Application Gateway with WAF in front of APIM, configure IP whitelisting on APIM, and enable diagnostic settings to send logs to a storage account.
Why it's wrong here
IP whitelisting does not provide authentication. Storage account logs are not ideal for real-time monitoring.
- ✗
Use Azure Front Door with WAF in front of APIM, configure IP whitelisting on APIM, and use Microsoft Sentinel for logging.
Why it's wrong here
IP whitelisting is not a robust authentication method. Sentinel is overkill for simple logging; Monitor is sufficient.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 security solutions for applications and data — study guide chapter
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FAQ
Questions learners often ask
What does this SC-100 question test?
Design security solutions for applications and data — This question tests Design security solutions for applications and data — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Use Azure API Management with built-in WAF, configure OAuth 2.0 authorization with Microsoft Entra ID, and enable Azure Monitor and Log Analytics for logging and alerting. — Option C is correct because Azure Web Application Firewall (WAF) on APIM protects against OWASP top 10 threats, OAuth 2.0 with Entra ID provides authentication and authorization, and Azure Monitor and Log Analytics provide logging and monitoring. Option A is wrong because NSGs do not protect against application-layer attacks. Option B is wrong because IP whitelisting does not handle authentication/authorization. Option D is wrong because Application Gateway WAF is redundant if APIM WAF is used, and IP whitelisting is not suitable.
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.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 21, 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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