Easy — DEA-C01 Practice Quiz

Question 1

A gaming company stores player match records in an Amazon DynamoDB table. Business rules require that each match record be automatically deleted 90 days after it is created to comply with a data retention policy, and the deletion should incur no additional write capacity charges. The team wants the least operational overhead. Which approach best meets these requirements?

Accepted Answer

Enable DynamoDB Time to Live (TTL) on an attribute that stores the record's expiration epoch timestamp.

Answer

Create a scheduled AWS Lambda function that scans the table daily and issues DeleteItem calls for records older than 90 days.

Answer

Configure an S3 Lifecycle rule to expire objects after 90 days and export the table to S3 nightly.

Answer

Enable DynamoDB point-in-time recovery and restore the table every 90 days to drop old records.

Question 2

A retail company needs to capture clickstream events from its website and deliver them to Amazon S3 for later analysis with Athena. The team wants the simplest possible solution with no servers to manage, no consumer applications to build, and near-real-time delivery with automatic buffering and retry. They do not require sub-second processing or the ability to replay records to multiple independent consumers. Which ingestion approach best meets these requirements with the least operational overhead?

Accepted Answer

Use Amazon Kinesis Data Firehose to buffer and deliver events directly to S3.

Answer

Use Amazon Kinesis Data Streams with a custom KCL consumer application running on EC2 to write to S3.

Answer

Use Amazon MSK with an S3 sink connector deployed on MSK Connect.

Answer

Use AWS DMS with S3 as the target endpoint to stream the clickstream events.

Question 3

A data engineer builds an interactive analysis in Amazon QuickSight that includes visuals for the company's monthly sales performance. Business leaders across several departments need to view the finished visuals on a regular basis, but they must not be able to change the underlying calculations, filters, or visual configuration. The engineer wants the simplest way to distribute the finished product to these consumers. What should the engineer do?

Accepted Answer

Publish the analysis as a dashboard and share it with the business leaders as readers.

Answer

Share the analysis directly with the business leaders and grant them author permissions.

Answer

Export each visual as a CSV file and email the files to the business leaders each month.

Answer

Duplicate the analysis into a separate account for each department and grant admin access.