Process Workloads by Using Azure Functions PL-400 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is a common reason to integrate an Azure Function into a Power Platform solution?

   • ATo run custom code that is not available through built-in connectors
   • BTo replace the need for a Dataverse database
   • CTo store large amounts of data
   • DTo provide a visual interface for users
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   A Power Automate flow calls an Azure Function to process a large data file. The processing may take up to 30 minutes, which exceeds the default HTTP trigger timeout. What is the recommended approach to handle this long-running operation?

   • AUse a Durable Function to orchestrate the process and have the flow wait synchronously for the result.
   • BIncrease the function's execution timeout to 60 minutes in the host.json file.
   • CRun the function on a Premium plan and set the function timeout to unlimited.
   • DUse an asynchronous pattern: the function starts the job, returns a status endpoint, and the flow polls for completion.
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A company has an Azure Function that runs every hour to sync data from an external system to Dataverse. The sync typically takes 5 minutes, but occasionally takes up to 12 minutes. The function uses a managed identity to authenticate to Dataverse. The company is on a Consumption plan and has noticed that some syncs fail. What is the most likely cause and what should you do?

   • AThe timer trigger is not firing correctly. Check the CRON expression.
   • BThe function is timing out because the Consumption plan has a 10-minute limit. Move to a Premium plan or refactor the function to be idempotent and retry.
   • CThe managed identity is not authorized for Dataverse. Grant the managed identity the appropriate role.
   • DThe external system is rate-limiting the function. Implement retry logic with exponential backoff.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A Power Apps app needs to initiate a long-running business process that is implemented as an Azure Function. The process can take up to 30 minutes. The app should not block the user, and the user should be able to check the status later. What is the recommended pattern?

   • AUse a timer-triggered function that runs every 5 minutes and processes all pending requests.
   • BCall the function synchronously from the app and show a loading spinner for up to 30 minutes.
   • CUse an HTTP-triggered function that starts the process and returns a status URL, then have the app poll the URL.
   • DUse a queue-triggered function and have the app send a message to the queue, then wait for the function to send a notification.
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A Power Platform developer needs to extend a canvas app with a custom calculation that is computationally intensive and may take several seconds. The developer wants to avoid adding heavy logic to the client app and wants to use Azure Functions. What is the primary benefit of using an Azure Function in this scenario?

   • AIt guarantees the calculation will complete within 5 seconds.
   • BIt allows the calculation to run asynchronously in the background without any user interaction.
   • CIt eliminates the need for any authentication when calling from Power Apps.
   • DIt provides a scalable, serverless compute service that can execute the calculation without managing infrastructure.
   Reveal Solution Discussion Select an answer first