Implement Azure Functions AZ-204 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A company has an Azure Functions app that processes orders. The function uses an input binding to read from Azure Cosmos DB. The development team wants to ensure that the function can authenticate to Cosmos DB without storing the account key in the function's application settings. What should the team configure?

   • ACreate a shared access signature (SAS) token for the Cosmos DB account and use it in the binding.
   • BUse the Cosmos DB connection string with the account key embedded and mark the setting as read-only.
   • CStore the Cosmos DB account key in a Key Vault and reference it in the function's connection string setting.
   • DEnable the function app's system-assigned managed identity and grant it the Cosmos DB Built-in Data Reader role.
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2. 7expert · hard

   A company has an Azure Function that uses a Cosmos DB trigger to process changes. The function writes to a Service Bus queue. The team notices that some changes are processed multiple times. They want to ensure that each change is processed exactly once. What should they do?

   • ASet the Cosmos DB trigger's maxItemsPerInvocation to 1.
   • BUse the Cosmos DB trigger's lease container to track processed changes and implement idempotent processing in the function.
   • CUse a Service Bus session to deduplicate messages.
   • DDisable the Cosmos DB trigger and use a timer trigger to poll for changes.
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4. 8foundation · medium

   Which Azure Functions trigger is used to respond to HTTP requests, such as REST API calls or webhooks?

   • ABlob trigger
   • BHTTP trigger
   • CQueue trigger
   • DTimer trigger
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5. 9expert · hard

   A company has an Azure Functions app that uses a Service Bus trigger. The function processes messages and writes results to Azure Blob Storage. The team notices that the function sometimes fails to process messages due to transient network errors. They want to ensure that failed messages are retried automatically. What should they configure?

   • ASet the Service Bus trigger's maxDeliveryCount to a higher value and enable dead-lettering for failed messages.
   • BUse a timer trigger to poll the queue and process messages manually.
   • CSet the function's retry policy to a fixed delay with a high count.
   • DUse a blob trigger and write failed messages to a poison blob.
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6. 10application · medium

   A company runs an Azure Functions app that processes orders. The function reads order details from an Azure Storage queue and writes a confirmation record to Azure Cosmos DB. The development team wants to use the same function code in a staging environment without changing the code. The staging environment uses a different storage account and a different Cosmos DB account. What should the team configure in the staging function app?

   • AModify the function's binding attributes to use the staging storage account and Cosmos DB account names directly.
   • BSet the queue connection string and Cosmos DB connection string as application settings, and reference them in the function's binding attributes.
   • CUse the same storage account and Cosmos DB account for both environments to avoid configuration differences.
   • DCreate a separate function app in the staging environment and copy the function code without any configuration changes.
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