Crucial Exams

Microsoft DevOps Engineer Expert AZ-400 Practice Question

Your company runs an ASP.NET Core 6.0 web API in Azure Kubernetes Service. The application retrieves configuration and feature flags from Azure App Configuration by using the Microsoft.FeatureManagement libraries. Product owners want to turn feature flags on or off in the Azure portal and see the change reflected in production within 30 seconds, without recycling pods or redeploying the application. Which approach should you implement to satisfy this requirement?

  • Enable the RefreshAll feature in the Azure portal and set a global cache TTL of 30 seconds for the App Configuration store.

  • Add UseAzureAppConfiguration and UseFeatureFlags in Program.cs and call ConfigureRefresh to register a sentinel key with SetCacheExpiration(TimeSpan.FromSeconds(30)).

  • Define a CacheExpiration setting in appsettings.json for Microsoft.FeatureManagement and rely on IOptionsMonitor to reload configuration.

  • Send configuration change events to Azure Event Grid and trigger an AKS rolling restart to apply updated environment variables.

Microsoft DevOps Engineer Expert AZ-400
Design and implement build and release pipelines
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