DEA-C01 Data Ingestion and Transformation Practice Question
A company has CSV files in an S3 bucket that need to be converted to Parquet and loaded into a Redshift table daily. The transformation is a simple schema mapping without joins. Which AWS Glue feature is BEST suited for this task?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS Glue ETL job
(AWS Glue ETL job) is the best suited because it can convert CSV to Parquet and load into Redshift daily. Option B (DataBrew) is a visual data preparation tool, not ideal for automated daily jobs. Option C (Workflow) orchestrates multiple jobs but does not perform transformation. Option D (Crawler) only discovers schema and catalogs data, not transform.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS Glue ETL job
Why this is correct
Glue ETL jobs can read CSV, convert to Parquet, and write to Redshift.
- ✗
AWS Glue DataBrew
Why it's wrong here
DataBrew is a visual data preparation tool; for automated daily jobs, ETL is better.
- ✗
AWS Glue Workflow
Why it's wrong here
Workflows orchestrate multiple jobs but do not perform the transformation itself.
- ✗
AWS Glue Crawler
Why it's wrong here
Crawlers populate the Data Catalog but do not transform or load data.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.