Choose a data store.
5 practice questions under this official exam objective (DEA-C01) — each with the community-verified answer, a full option-by-option explanation and instant feedback.
Amazon Redshift Compound Sort Key Query Optimization
A compound sort key in Amazon Redshift improves query performance when filters are applied on the leading columns of the key. This page establishes th
How to Make Amazon Athena Queries on CSV Files Run Faster?
This question asks which change will MOST speed up Amazon Athena queries whose source files are uncompressed .csv and whose users filter on a single c
Which AWS NoSQL Database Meets Global OLTP with Least Overhead?
This DEA-C01 question tests which fully managed AWS NoSQL service delivers single-digit millisecond OLTP performance and global high availability with
Most Cost-Effective VPC Flow Log Analytics Solution?
This DEA-C01 question asks for the most cost-effective way to collect VPC flow logs and analyze network traffic. Publishing flow logs to Amazon S3 in
Most Cost-Effective Athena and QuickSight SPICE for S3 Clickstream?
For clickstream data already in Amazon S3, Amazon Athena and Amazon QuickSight SPICE with a daily refresh deliver scalable dashboards for hundreds of