The answer is Azure Key Vault with managed identity and certificate auto-rotation. This combination works because Key Vault provides a centralized, hardened vault for storing secrets like database connection strings and API keys, while managed identities for Azure resources allow applications to authenticate to Key Vault without ever embedding credentials in code or configuration files. For automatic rotation without downtime, Key Vault can be configured to auto-rotate certificates based on a defined lifecycle, ensuring that applications using managed identity seamlessly fetch the renewed secret without any service interruption. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of the secure secret lifecycle and the distinction between secret storage (Key Vault) and configuration management (Azure App Configuration). A common trap is choosing App Configuration because it can store key-value pairs, but it lacks native secret rotation and access policies. Memory tip: think “Vault for secrets, Config for settings” — if it needs rotation and access control, it belongs in Key Vault.
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.
Your organization is migrating on-premises applications to Azure and needs to secure secrets (database connection strings, API keys) used by these applications. You are required to rotate secrets automatically without downtime. Which Azure service should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Key Vault with managed identity and certificate auto-rotation
Azure Key Vault with managed identity and automatic rotation is the correct solution because Key Vault stores secrets securely, managed identity eliminates hard-coded credentials, and Key Vault can rotate certificates automatically. Option B (Azure App Configuration) is for configuration management, not secrets. Option C (Microsoft Purview) is for data governance. Option D (Azure AD Application Proxy) is for remote access to on-prem apps.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 Purview Information Protection
Why it's wrong here
Purview is for data classification and protection, not secret management.
✗
Azure App Configuration with feature flags
Why it's wrong here
App Configuration manages configuration settings, not secrets.
✓
Azure Key Vault with managed identity and certificate auto-rotation
Static NAT maps one inside address to one outside address.
✗
Azure AD Application Proxy
Why it's wrong here
Application Proxy provides remote access to on-premises apps, not secret management.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
Design solutions that align with security best practices and priorities — This question tests Design solutions that align with security best practices and priorities — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure Key Vault with managed identity and certificate auto-rotation — Azure Key Vault with managed identity and automatic rotation is the correct solution because Key Vault stores secrets securely, managed identity eliminates hard-coded credentials, and Key Vault can rotate certificates automatically. Option B (Azure App Configuration) is for configuration management, not secrets. Option C (Microsoft Purview) is for data governance. Option D (Azure AD Application Proxy) is for remote access to on-prem apps.
What should I do if I get this SC-100 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.