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AWS Certified Data Engineer Associate DEA-C01 Practice Question

A company stores daily .csv transaction files in an Amazon S3 bucket. A data engineer must ensure that every new object triggers a processing Lambda function exactly once, in the same order that the files arrive, and that failed invocations are automatically retried without manual intervention. Which approach meets these requirements with the least operational overhead?

  • Configure an S3 event notification with a suffix filter of .csv that publishes to an Amazon SQS FIFO queue, then set the Lambda function to poll the queue with a batch size of 1.

  • Create an Amazon EventBridge rule for s3:ObjectCreated:Put events and set the Lambda function as the rule's only target.

  • Send S3 event notifications directly to the Lambda function and restrict its reserved concurrency to 1 to enforce sequential execution.

  • Enable S3 replication to a second bucket and create a Step Functions state machine that the replication process invokes for each replicated object.

AWS Certified Data Engineer Associate DEA-C01
Data Ingestion and Transformation
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