Your team is currently publishing items to an S3 bucket. You need to record the size of the objects in a separate DynamoDB table. How can you ensure that each uploaded object triggers a record in the DynamoDB table in an ideal manner? Choose 2 answers from the options given below.

Answer options:

A.Create a new SQS queue.
B.Create a new Lambda function.
C.Add the SQS queue to the source event for the S3 bucket.
D.Add the Lambda function to the source event for the S3 bucket.

Answer – B and D
This is given in the AWS Documentation.
Amazon S3 can publish events (for example, when an object is created in a bucket) to AWS Lambda and invoke your Lambda function by passing the event data as a parameter. This integration enables you to write Lambda functions that process Amazon S3 events. In Amazon S3, you add a bucket notification configuration that identifies the type of event that you want Amazon S3 to publish and the Lambda function that you want to invoke.
Options A and C are incorrect since the ideal option would be to create a Lambda function that could be used to automatically record the data size and then place a record in the DynamoDB table.
For more information on S3 with Lambda, please refer to the below URL-
https://docs.aws.amazon.com/lambda/latest/dg/with-s3.html