Process Workloads by Using Azure Functions PL-400 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A company wants to integrate an Azure Function with Power Apps. The function will perform a long-running operation (up to 15 minutes) and the canvas app needs to show progress to the user. What is the recommended pattern?

   • AUse a QueueTrigger and have the app send a message to the queue and then poll the queue for the result.
   • BUse a Durable Function to orchestrate the operation and have the canvas app poll a status endpoint.
   • CCall the function synchronously from Power Apps using the 'PowerApps' connector and wait for the response.
   • DUse a TimerTrigger to run the operation and have the app check a Dataverse table for the result.
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2. 17expert · medium

   A company has an Azure Function that is triggered by an HTTP request from a Power Automate flow. The function performs a calculation and returns the result. Recently, the function has been returning 401 Unauthorized errors. The flow uses the function's host key for authentication. What is the most likely cause?

   • AThe function app is on a Consumption plan and has scaled to zero.
   • BThe host key has been regenerated.
   • CThe function's managed identity is not configured.
   • DThe function's `functionTimeout` is set too low.
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4. 18foundation · easy

   Which statement accurately describes a key capability of Azure Functions that makes it useful for extending Power Platform solutions?

   • AIt is a database service for storing relational data used by Power Apps.
   • BIt provides a visual designer for building workflows without code.
   • CIt allows you to run custom code in response to events without managing infrastructure.
   • DIt is a tool for creating and managing Power Platform environments.
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5. 19application · medium

   A retail company wants to run a nightly Azure Function that synchronizes product inventory from an external ERP system into Dataverse. The function must run at 2:00 AM daily and should not require any manual intervention. The company uses Azure DevOps for deployment and wants to keep the function's code in the same repository as other Power Platform customizations. What should you do?

   • ACreate a BlobTrigger Azure Function that runs whenever a new inventory file is uploaded to a storage container.
   • BCreate a QueueTrigger Azure Function and have an external scheduler send a message to the queue at 2:00 AM.
   • CCreate an HTTP-triggered Azure Function and use Power Automate's 'Recurrence' trigger to call it at 2:00 AM daily.
   • DCreate a TimerTrigger Azure Function with a cron expression `0 0 2 * * *` and deploy it to a Function App in Azure.
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6. 20expert · medium

   A company has a Power Automate flow that triggers on new emails in a shared mailbox. The flow needs to call an Azure Function to process the email content and update Dataverse. The function must be triggered only when the email contains a specific subject line. The company wants to minimize the number of function executions. What is the best approach?

   • AHave the function check the subject line and return early if it does not match, using an HTTP trigger.
   • BUse a timer-triggered function that polls the mailbox every minute and checks the subject line.
   • CHave the flow check the subject line and only call the function if it matches, using an HTTP trigger.
   • DUse a queue-triggered function and have the flow send a message for every email, with the function checking the subject.
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