AWS Certified Data Engineer Associate (DEA-C01) Exam Guide
The **AWS Data Engineer Associate** certification validates your ability to implement data pipelines, ingest, transform, and store data using AWS services. It replaces the former Data Analytics Specialty certification.
Which AWS service orchestrates complex data workflows using Python DAGs?
Answer : Amazon Managed Workflows for Apache Airflow (MWAA).
MWAA simplifies running open-source Apache Airflow on AWS.
What is the primary difference between Amazon S3 and Amazon EBS?
Answer : S3 is object storage, EBS is block storage.
S3 is for Data Lakes, EBS is for persistent EC2 volumes.
Which service queries S3 data directly using SQL?
Answer : Amazon Athena.
Athena is serverless and works directly on data stored in S3.
How does Redshift optimize analytical queries?
Answer : Using Columnar Storage.
This reduces disk I/O and speeds up analytical processing.
Which tool catalogs metadata from data sources?
Answer : AWS Glue Data Catalog.
It provides a central repository for metadata across AWS services.
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