• Explain the role of the /.well-known/openid-configuration endpoint in Azure AD token validation within your ASP.NET Core Web API .

  • How do you handle token validation for multiple Azure AD tenants accessing a single instance of your ASP.NET Core Web API ?

  • Scenario:You need to ensure that only devices marked as compliant in Intune can access your ASP.NET Core Web API . How would you configure this using Azure AD Conditional Access ?

  • How would you integrateAzure Key Vaultwith anASP.NET Core Web APIdeployed toAzure App ServiceusingManaged Identityto securely retrieve secrets required at runtime?

  • Scenario: Design an Azure AD access review process for users assigned to application roles that grant access to your ASP.NET Core Web API .

  • Scenario: Users report intermittent authentication failures when accessing an ASP.NET Core Web App that calls your secured Web API . Outline your troubleshooting process , focusing on potential Azure AD and token-related issues .

  • Scenario: You discover that a service principal associated with one of your ASP.NET Core applications has overly broad permissions (e.g., Contributor on the entire subscription). Describe the steps you would take to remediate this following the principle of least privilege . Expertise Level: Mid Level

  • Scenario: Your organization wants to enforce Multi-Factor Authentication (MFA) for all users accessing a specific high-privilege endpoint in your ASP.NET Core Web API , even if they are on the corporate network. How would you achieve this using Conditional Access ?

  • Scenario: A background service (running as an Azure Function or WebJob) needs to call your secured ASP.NET Core Web API without a user context. How would you implement this authentication using Azure AD? (Hint: Client Credentials Flow).

  • Scenario: You need to provide access to yourASP.NET Core Web APIfor external users using theirsocial identities(e.g.,Google,Facebook). Outline the steps usingAzure AD B2C.

  • Scenario: AnASP.NET Core Web APIneeds to call anotherdownstream API(also secured byAzure AD) on behalf of the signed-in user. Explain theOn-Behalf-Of (OBO) flowand how you'd implement it.

  • How would you design an authorization strategy for a multi-tenant ASP.NET Core Web API secured with Azure AD ?

  • Explain the purpose of the aud (Audience) claim in a JWT token and why it's critical for validation in your ASP.NET Core Web API .

  • How can you implement "defense in depth" for securing an ASP.NET Core Web API using Azure AD, beyond just token validation?

  • Discuss the considerations for managing secrets and credentials lifecycle for App Registrations used by yourASP.NET Coreapplications.

  • Explain how Azure AD Identity Protection can help detect and respond to potential identity compromises affecting users accessing your ASP.NET Core application . Mid Level

  • What are the security implications of using `accessTokenAcceptedVersion:2` versus `null` (v1.0) in the Azure AD App Registration manifest for your Web API ?

  • Describe how you would configure Cross-Origin Resource Sharing (CORS) correctly for an ASP.NET Core Web API secured with Azure AD, allowing access from a specific single-page application (SPA). Expertise Level: Mid-Level

  • How would you implement custom claims in Azure AD tokens and consume them in your ASP.NET Core Web API for authorization logic ?

  • Explain the concept of Service Principals in Azure AD and how they relate to App Registrations and Managed Identities.

  • How do you secure sensitive configuration values (like Client Secrets or API keys) used by your ASP.NET Core Web API for interacting with Azure AD or other services?

  • What steps would you take to troubleshoot a 401 Unauthorized error when a client application tries to call your Azure AD-secured ASP.NET Core Web API ?

  • Describe a scenario where you would use Azure Policy for enforcing IAM-related configurations on Azure resources that host or support your ASP.NET Core application.

  • How would you handle token refresh scenarios in a client application calling your secured ASP.NET Core Web API?

  • Explain the concept ofAzure AD Privileged Identity Management (PIM). How can it be used to secure administrative access related to yourAzure AD configurationor deployedAzure resources?