Design and Implement Change Feeds for Azure Cosmos DB for NoSQL DP-420 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   You are developing an Azure Functions app to process changes from an Azure Cosmos DB container. You need to automatically trigger a function whenever a document is inserted or updated in the container. Which binding should you use?

   • ACosmos DB trigger binding
   • BCosmos DB output binding
   • CCosmos DB input binding
   • DTimer trigger with Cosmos DB input
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2. 2foundation · easy

   When using the change feed to denormalize data, what is a common reason to store denormalized documents in a separate container?

   • ATo automatically archive old data
   • BTo reduce the number of point reads required by the application
   • CTo reduce storage costs
   • DTo enforce referential integrity between documents
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4. 3foundation · easy

   You are implementing a solution that maintains a running total of sales per product category. You plan to use the change feed to update an aggregation container. What is the primary benefit of this approach?

   • AIt reduces the total storage required
   • BIt provides real-time or near-real-time aggregated data without running expensive queries on every request
   • CIt eliminates the need to store raw data
   • DIt guarantees exactly-once processing of every change
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5. 4foundation · easy

   You are writing a .NET application that needs to consume the change feed from an Azure Cosmos DB container using the SDK. Which class provides the high-level abstraction to read the change feed and manage checkpoints?

   • ACosmosClient
   • BDatabase
   • CContainer
   • DChangeFeedProcessor
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6. 5application · medium

   A team is using the change feed processor in a .NET application to process changes from a Cosmos DB container. They have deployed multiple instances of the application to handle the load. They want to monitor the lag between the latest change and the last processed change to ensure the system is keeping up. What should they use?

   • AThe lease document's ContinuationToken property.
   • BThe Azure Functions change feed trigger's built-in logging.
   • CThe change feed estimator, which reports the lag in terms of the number of documents pending processing.
   • DThe Azure Monitor metrics for the Cosmos DB account, such as TotalRequests.
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