This AZ-204 practice question tests your understanding of implement azure security. 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 deploy a web application in Azure App Service. You need to authenticate users via Microsoft Entra ID (Microsoft Entra ID) with minimal custom code. Which App Service feature should you configure?
Correct. App Service Authentication provides built-in authentication using Microsoft Entra ID with minimal configuration and no code changes.
B
Microsoft Entra ID B2C
Why wrong: Incorrect. Microsoft Entra ID B2C is designed for customer identity management and is more complex than needed for internal employee authentication.
C
Application Gateway with WAF
Why wrong: Incorrect. Application Gateway is a load balancer and WAF provides firewall capabilities, not authentication.
D
App Service Managed Identity
Why wrong: Incorrect. Managed Identity is used to authenticate to other Azure services, not to authenticate users to your app.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
App Service Authentication (Easy Auth)
App Service Authentication (also known as Easy Auth) is the correct choice because it provides a turnkey authentication layer that integrates directly with Microsoft Entra ID. It requires minimal custom code by handling the OAuth 2.0 authorization code flow, token validation, and session management at the App Service platform level, allowing you to simply configure the identity provider in the Azure portal.
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.
✓
App Service Authentication (Easy Auth)
Why this is correct
Correct. App Service Authentication provides built-in authentication using Microsoft Entra ID with minimal configuration and no code changes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Entra ID B2C
Why it's wrong here
Incorrect. Microsoft Entra ID B2C is designed for customer identity management and is more complex than needed for internal employee authentication.
Incorrect. Managed Identity is used to authenticate to other Azure services, not to authenticate users to your app.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Managed Identity (which is for server-to-server resource access) with user authentication, or they overcomplicate the solution by choosing B2C when the requirement is simply to authenticate against an existing Microsoft Entra ID tenant with minimal code.
Detailed technical explanation
How to think about this question
Under the hood, Easy Auth intercepts all incoming HTTP requests at the App Service front-end (the 'front door' layer) before they reach your application code. It automatically redirects unauthenticated users to the Microsoft Entra ID login endpoint, validates the returned ID token and access token using the /.well-known/openid-configuration discovery endpoint, and injects the claims into HTTP headers (e.g., X-MS-CLIENT-PRINCIPAL) that your app can read without writing any OAuth library code. A subtle behavior is that you can still enforce authentication at the app level by checking these headers, but the platform handles the entire redirect and token lifecycle.
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.
Implement Azure security — This question tests Implement Azure security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: App Service Authentication (Easy Auth) — App Service Authentication (also known as Easy Auth) is the correct choice because it provides a turnkey authentication layer that integrates directly with Microsoft Entra ID. It requires minimal custom code by handling the OAuth 2.0 authorization code flow, token validation, and session management at the App Service platform level, allowing you to simply configure the identity provider in the Azure portal.
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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