Develop Event- and Message-Based AI Solutions AI-200 Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   Which action causes a Service Bus message to be automatically moved to the dead-letter queue?

   • AThe message is scheduled for a future time
   • BThe receiver abandons the message with an explicit dead-letter reason
   • CThe message is received in ReceiveAndDelete mode
   • DThe message exceeds the maximum number of delivery attempts
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2. 27foundation · easy

   Which component in Azure Event Grid is responsible for receiving events and delivering them to subscribers?

   • AEvent subscription
   • BEvent handler
   • CEvent schema
   • DEvent topic
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4. 28expert · hard

   A company uses Azure Event Grid to deliver events to a third-party webhook. The webhook occasionally returns HTTP 429 (Too Many Requests) and HTTP 500 errors. The team has enabled dead-lettering but is still losing events. They need to reduce the number of failed deliveries while keeping the solution cost-effective. What should they do?

   • ADisable dead-lettering to avoid the cost of storing failed events and rely on the default retry policy.
   • BSet the retry policy to a very low maximum retry count to avoid overloading the webhook.
   • CSwitch to a Service Bus queue and have the webhook poll the queue for messages.
   • DConfigure the event subscription to use a retry policy with a higher maximum retry count and respect the Retry-After header returned by the webhook.
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5. 29application · medium

   A retail company runs an order-processing service that reads messages from an Azure Service Bus queue. The service occasionally throws an unhandled exception while processing a message, and the message is immediately retried. After 10 failed attempts, the message is moved to the dead-letter queue. The operations team wants to automatically inspect dead-lettered messages and, if the payload is valid, resubmit them for processing. What should you implement?

   • AConfigure an Azure Event Grid subscription to forward dead-lettered messages to an Azure Function.
   • BIncrease the MaxDeliveryCount on the queue to 50 so messages are retried more times before dead-lettering.
   • CEnable the queue's dead-lettering on message expiration and set a longer lock duration.
   • DA separate consumer that reads from the dead-letter queue and forwards valid messages back to the main queue.
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6. 30application · medium

   A company uses Azure Event Grid to trigger an Azure Function whenever a new blob is uploaded to a storage account. Occasionally, the function fails to process the blob due to a temporary network issue. The team wants to ensure that the event is retried and that the blob is not lost. What should they do?

   • ASet the Azure Function's timeout to a very high value to ensure it processes the blob eventually.
   • BRely on Event Grid's default retry policy and enable dead-lettering on the event subscription.
   • CCreate a separate blob container to store failed blob uploads manually.
   • DUse a Service Bus queue instead of Event Grid to guarantee delivery.
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