Develop and Implement Azure Functions AI-200 Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A financial services company has an Azure Function that processes transactions from a Service Bus queue. The function must guarantee at-least-once processing and must not lose messages. Recently, the team noticed that some transactions are processed twice. They suspect that the function is throwing an exception after partially processing a message, causing the Service Bus to redeliver it. The function currently uses the default Service Bus trigger behavior. What should you do to ensure that messages are not processed twice while still maintaining at-least-once delivery?

   • AMake the function idempotent by checking whether the transaction ID has already been processed before applying changes
   • BUse a Durable Function with a fan-out/fan-in pattern to process each message only once
   • CSet the Service Bus trigger's maxAutoRenewDuration to a higher value to prevent the message lock from expiring
   • DSet the Service Bus trigger's autoComplete to false and call CompleteMessageAsync only after the processing is fully successful
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2. 22foundation · easy

   When designing a serverless API using Azure Functions, which binding is used to expose an HTTP endpoint that can be called by clients?

   • AQueue trigger
   • BBlob trigger
   • CHTTP trigger
   • DTimer trigger
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4. 23expert · medium

   A company has an Azure Function that is triggered by a blob upload. The function reads the blob and writes a record to a SQL database. Recently, the function has been failing with a SQL timeout error. The team has enabled Application Insights. What should they do to identify the cause of the timeout?

   • ACheck the function's application settings for the SQL connection string
   • BReview the dependency telemetry for the SQL call to see the duration and any errors
   • CUse Azure Monitor to view the function app's memory usage
   • DReview the function's deployment logs to see if the code was recently changed
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5. 24foundation · easy

   Where should you store sensitive configuration values, such as connection strings, for an Azure Function app to keep them secure?

   • AIn the function's code as constants
   • BIn a text file in the function's root directory
   • CIn the function app's application settings
   • DIn the function's route template
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6. 25application · medium

   A team is deploying an Azure Function app to a new environment. The function app must use different connection strings and application settings in development, test, and production. The team wants to avoid manual configuration and ensure that the correct settings are applied during deployment. What should you do?

   • AHard-code the connection strings in the function code and use conditional compilation
   • BStore all connection strings in a single application setting and switch at runtime
   • CManually update the application settings in the Azure Portal after each deployment
   • DUse Azure DevOps Pipeline variables and set the function app settings in the deployment task
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