Exam AWS Certified Data Engineer - Associate DEA-C01 topic 1 question 234 discussion

Exam question from Amazon's AWS Certified Data Engineer - Associate DEA-C01

Question #: 234
Topic #: 1

[All AWS Certified Data Engineer - Associate DEA-C01 Questions]

A data engineer is optimizing query performance in Amazon Athena notebooks that use Apache Spark to analyze large datasets that are stored in Amazon S3. The data is partitioned.
An AWS Glue crawler updates the partitions.

The data engineer wants to minimize the amount of data that is scanned to improve efficiency of Athena queries.

Which solution will meet these requirements?

A. Apply partition filters in the queries.
B. Increase the frequency of AWS Glue crawler invocations to update the data catalog more often.
C. Organize the data that is in Amazon S3 by using a nested directory structure.
D. Configure Spark to use in-memory caching for frequently accessed data.

Show Suggested Answer

Suggested Answer: A 🗳️

by rdiaz at July 4, 2025, 4:59 a.m.

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rdiaz

1 week, 5 days ago

Selected Answer: A

Partitions in query

upvoted 1 times

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