Implement Solutions Across Services DP-420 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   When using an Azure Function with the Cosmos DB trigger, which component is used to deliver the stream of changes to the function?

   • AThe Azure Service Bus queue
   • BThe Azure Blob Storage event stream
   • CThe Azure Cosmos DB change feed
   • DThe Azure Event Grid system topic
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2. 12foundation · easy

   In a change-feed-based denormalization pattern, what is the typical role of an Azure Function?

   • ATo create new containers for each change
   • BTo read changes from the source container and update the corresponding denormalized documents in the target container
   • CTo delete the original documents after denormalization
   • DTo periodically rebuild the entire database from scratch
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4. 13foundation · easy

   You are using the change feed with Azure Functions to denormalize data in Azure Cosmos DB. What is the primary goal of denormalization in this context?

   • ATo increase the consistency level of the database
   • BTo eliminate the need for client-side joins by embedding related data into a single document
   • CTo reduce the number of containers in the database
   • DTo reduce the storage cost by removing duplicate data
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5. 14foundation · easy

   Your solution uses Azure Event Hubs to ingest high-volume telemetry events. You need to persist these events to Azure Cosmos DB for further analysis. Which Azure service is most appropriate to read events from Event Hubs and write them to Cosmos DB?

   • AAzure Data Factory
   • BAzure Logic Apps with an Event Hubs connector
   • CAzure Functions with an Event Hubs trigger
   • DAzure Stream Analytics
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6. 15application · medium

   A financial services company ingests real-time stock trade events from multiple sources. Each event must be processed and stored in Azure Cosmos DB for historical analysis. The company expects sudden spikes in event volume and wants to decouple the ingestion from the processing to avoid overwhelming the database. What should you implement?

   • AUse an Azure Function with a Cosmos DB trigger to process events as they are written to Cosmos DB.
   • BUse Azure Service Bus instead of Event Hubs for high-throughput event streaming.
   • CHave each source application write directly to Cosmos DB using the SQL API.
   • DSend all trade events to an Azure Event Hubs namespace, then use an Azure Function with an Event Hubs trigger to write batches to Cosmos DB.
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