Microsoft Azure Developer Associate AZ-204 Practice Question
An ASP.NET Core web API is registered in Microsoft Entra ID as a single-tenant application. You exposed a scope named "Tasks.Read" and configured the API to accept only tokens whose aud claim matches its application ID URI. A React single-page application (SPA) acquires a token for the User.Read scope and receives HTTP 401 when it calls the API. Which change will resolve the authorization failure?
Disable audience (aud) validation in JwtBearerOptions in the API's startup code.
In the SPA, request an access token for the scope api:///Tasks.Read instead of User.Read.
Add the API's application ID URI to the list of redirect URIs in the SPA's app registration.
Enable the implicit grant flow for access tokens in the API's app registration.
The SPA must request an access token that is intended for the web API. When the SPA asks Microsoft Entra ID for the scope api:///Tasks.Read it receives a token whose aud claim equals the API's application ID URI, so JwtBearer authentication succeeds and the API returns 200. Enabling implicit grant, adding redirect URIs, or disabling audience validation do not fix the underlying mismatch between the token's audience and the API.
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What is Microsoft Entra ID?
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What is an application ID URI in Microsoft Entra ID?
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How does the scope `api://<API-application-ID>/Tasks.Read` affect token requests?
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Microsoft Azure Developer Associate AZ-204
Implement Azure security
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