Task 1: Develop Code for Applications Hosted on AWS DVA-C02 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which AWS service can automatically deliver streaming data to destinations like Amazon S3, Redshift, or Splunk?

   • AAmazon Kinesis Data Streams
   • BAmazon Kinesis Data Firehose
   • CAWS Lambda
   • DAmazon MQ
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A developer is writing a Lambda function that retrieves an item from Amazon DynamoDB using the AWS SDK. The function is invoked frequently, and occasionally DynamoDB returns a ProvisionedThroughputExceededException. The developer wants to handle this transient error gracefully without failing the entire invocation. What should the developer implement in the code?

   • ACatch the exception and immediately return a 500 error to the caller so the issue is visible.
   • BCatch the exception, log it, and retry the operation with exponential backoff and jitter for a limited number of attempts.
   • CCatch the exception and retry the operation in a tight loop without any delay until it succeeds.
   • DCatch the exception and switch to reading from a different AWS Region to avoid the throttling.
   Reveal Solution Discussion Select an answer first
4. 3expert · medium

   A developer is managing an API Gateway REST API backed by a Lambda function. The API has a 'GET /items/{id}' endpoint. The developer needs to add a new 'GET /items/{id}/reviews' endpoint that returns reviews for an item. The developer wants to reuse the existing Lambda function but needs to handle the new path. The Lambda function currently uses the 'resource' and 'path' variables from the event to route requests. What should the developer do to support the new endpoint with minimal code changes?

   • AAdd a new resource and method in API Gateway, and update the Lambda function's routing logic to handle the new path.
   • BCreate a new Lambda function for the reviews endpoint and configure API Gateway to invoke it.
   • CUse a mock integration in API Gateway to return static reviews without invoking Lambda.
   • DConfigure API Gateway to use a mapping template to transform the request to the existing function's expected format.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which AWS service is a message queue that allows consumers to poll and process messages at their own pace?

   • AAmazon SQS
   • BAmazon SNS
   • CAmazon Kinesis
   • DAWS Lambda
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which AWS SDK feature allows you to automatically retry failed requests due to transient errors?

   • AStreaming responses
   • BPagination
   • CAutomatic retries with exponential backoff
   • DRequest signing
   Reveal Solution Discussion Select an answer first