The answer is to register the function app in Microsoft Entra ID and then expose both scopes and app roles within that app registration. This configuration is correct because OAuth 2.0 authentication for Azure Functions requires a registered identity provider to issue tokens; scopes enable delegated permissions for user authentication, while app roles handle application permissions for service-to-service calls. On the Microsoft Azure Developer Associate AZ-204 exam, this scenario tests your understanding of how to secure serverless APIs by mapping authentication flows to Entra ID constructs—a common trap is confusing scopes with roles or forgetting to configure both for mixed user and app access. Remember the memory tip: "Scopes for people, roles for programs" to keep the distinction clear when configuring OAuth 2.0.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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 building a serverless API using Azure Functions. The API must be secured with OAuth 2.0 and must support both user authentication and application permissions. You need to configure the function app appropriately. Which TWO steps should you take?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Expose scopes and app roles in the Microsoft Entra ID app registration.
Option A is correct because exposing scopes and app roles in the Microsoft Entra ID app registration is required to support both user authentication (via delegated permissions/scopes) and application permissions (via app roles). This allows the Azure Function to validate tokens for both user and application contexts using OAuth 2.0.
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.
✓
Expose scopes and app roles in the Microsoft Entra ID app registration.
Why this is correct
Scopes for delegated permissions and app roles for application permissions are required.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Azure AD v1.0 endpoints.
Why it's wrong here
Azure AD v1.0 is deprecated; use Microsoft identity platform v2.0.
✗
Configure authentication via the 'Authentication' blade in the portal.
Why it's wrong here
This is the built-in auth, which may be used but is not a step for custom OAuth.
✓
Register the function app in Microsoft Entra ID.
Why this is correct
Registration is required to obtain client ID and tenant for OAuth.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable Azure App Service built-in authentication (EasyAuth).
Why it's wrong here
EasyAuth is a simplified option but not required; it can be used but the question asks for steps to configure OAuth.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think enabling EasyAuth (Option E) alone is sufficient for OAuth 2.0 support, but it only handles token validation and does not configure the required scopes and app roles in the app registration.
Detailed technical explanation
How to think about this question
Under the hood, the Microsoft identity platform (v2.0) uses the OAuth 2.0 authorization framework where scopes (delegated permissions) are requested by users, and app roles (application permissions) are requested by client applications. The Azure Functions runtime validates the token's 'scp' claim for user permissions and the 'roles' claim for app permissions. In a real-world scenario, a headless service (e.g., a daemon) would use client credentials flow with app roles, while a web app would use authorization code flow with scopes.
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 AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Expose scopes and app roles in the Microsoft Entra ID app registration. — Option A is correct because exposing scopes and app roles in the Microsoft Entra ID app registration is required to support both user authentication (via delegated permissions/scopes) and application permissions (via app roles). This allows the Azure Function to validate tokens for both user and application contexts using OAuth 2.0.
What should I do if I get this AZ-204 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.
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Question Discussion
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