Crucial Exams

AWS Certified Data Engineer Associate DEA-C01 Practice Question

Your company ingests 5 TB of application logs each day into Amazon S3. Analysts run Amazon Athena queries that typically select 5-10 columns out of 200 and filter on date and region. Scan charges are rising and queries are slow. You will convert the data to an optimized format that minimizes data scanned, supports compression, and handles evolving schemas. Which format best meets these requirements?

  • CSV files with Snappy compression

  • Apache Avro

  • JSON Lines files compressed with Gzip

  • Apache Parquet

AWS Certified Data Engineer Associate DEA-C01
Data Store Management
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