Crucial Exams

AWS Certified Developer Associate DVA-C02 Practice Question

A developer needs to retrieve a single item from an Amazon DynamoDB table by its primary key (partition key only). The function is called thousands of times per minute, so minimizing latency and read-capacity consumption is critical. Which DynamoDB API operation should the developer use to achieve the MOST efficient read performance?

  • Query a global secondary index that stores the partition key value.

  • Perform a Query operation using a KeyConditionExpression on the partition key.

  • Use the GetItem operation with the item's primary key.

  • Run a Scan operation and filter the results in the application.

AWS Certified Developer Associate DVA-C02
Development with AWS Services
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