Develop Event- and Message-Based AI Solutions AI-200 Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A company processes orders through an Azure Service Bus queue. Some messages are moved to the dead-letter queue because the order validation service fails due to a bug. The team has fixed the bug and wants to reprocess the dead-lettered messages without losing any data. What should they do?

   • AWrite a script that reads messages from the dead-letter queue and resends them to the main queue after fixing the bug.
   • BIncrease the MaxDeliveryCount on the main queue so that the dead-lettered messages are automatically retried.
   • CUse a Service Bus topic to broadcast the dead-lettered messages to the validation service.
   • DDelete the dead-letter queue and recreate it to clear the failed messages.
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2. 22foundation · easy

   What is the typical flow when building an event-driven workflow with Azure Event Grid?

   • ASource emits event → Event Grid routes to subscriber → handler processes event
   • BSource stores event in queue → handler retrieves from queue
   • CHandler polls source → source sends event to handler
   • DSubscriber creates event → Event Grid stores it → source retrieves it
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4. 23foundation · easy

   Which Azure Service Bus entity provides a one-to-one communication channel where each message is consumed by exactly one receiver?

   • AQueue
   • BSubscription
   • CTopic
   • DRelay
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5. 24foundation · easy

   What is the primary benefit of using a Service Bus topic with multiple subscriptions instead of multiple queues?

   • AIt eliminates the need for message locks
   • BIt automatically retries failed deliveries
   • CIt provides higher throughput than queues
   • DIt allows the same message to be delivered to multiple independent consumers
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6. 25application · medium

   A healthcare company uses a Service Bus queue to process patient record updates. Some messages fail because the payload is malformed. The operations team wants to automatically move these malformed messages to a separate queue for manual inspection, while allowing transient failures to be retried. What should they configure?

   • AUse a topic with a filter to route malformed messages to a separate subscription.
   • BSet the message time-to-live to a short duration so expired messages are removed.
   • CEnable dead-lettering on the queue and set MaxDeliveryCount to a low value.
   • DConfigure the consumer to catch exceptions and abandon the message immediately.
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