Develop Event- and Message-Based AI Solutions AI-200 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A startup is building a microservices architecture where order processing must be decoupled from the web frontend. The frontend should send order details to a backend service that may be offline temporarily. The team needs a reliable messaging solution that guarantees at-least-once delivery and supports competing consumers. What should they use?

   • AAzure Event Grid
   • BAzure Blob Storage with a polling mechanism
   • CAzure Service Bus queue
   • DAzure SignalR Service
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2. 17application · medium

   A company uses an Azure Service Bus queue for processing payment messages. Some messages fail because the payment gateway is temporarily unavailable. The team wants to automatically retry these messages a few times and then move them to a separate queue for manual investigation. What should you implement?

   • AManually move failed messages to a separate queue using a scheduled job.
   • BSet MaxDeliveryCount to 5 and enable dead-lettering on the queue.
   • CSet the queue's DefaultMessageTimeToLive to a short duration so messages expire quickly.
   • DUse a topic with a subscription that has a SQL filter to route failed messages to a separate queue.
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4. 18application · medium

   A company wants to build a serverless application that reacts to changes in Azure Blob Storage. They need to trigger an Azure Function whenever a new blob is created, and they want to use a service that provides built-in retry and dead-lettering. Which service should they use?

   • AAzure Event Grid
   • BAzure Queue Storage
   • CAzure Event Hubs
   • DAzure Service Bus
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5. 19foundation · easy

   Which Service Bus message state indicates that a receiver has retrieved the message but has not yet completed processing?

   • ADeferred
   • BScheduled
   • CActive
   • DLocked
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6. 20application · medium

   A company uses a Service Bus queue to process image resizing requests. The processing service sometimes crashes and the message is abandoned. After several attempts, the message is dead-lettered. The operations team wants to automatically retry dead-lettered messages after fixing the underlying issue. What should they do?

   • AEnable duplicate detection on the queue.
   • BUse an Azure Event Grid subscription to the dead-letter queue.
   • CWrite a script that reads from the dead-letter queue and sends the messages back to the main queue.
   • DIncrease the MaxDeliveryCount to a very high number.
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