- A
AWS Database Migration Service
Why wrong: DMS is for database migration, not for file-based ETL from S3.
- B
AWS Glue
Glue can run serverless ETL jobs on a schedule, reducing overhead.
- C
Amazon Redshift Spectrum
Why wrong: Spectrum queries S3 directly but does not load data into Redshift tables.
- D
Amazon Athena
Why wrong: Athena is for querying, not for loading data into Redshift.
Question 1,757 of 1,786
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company has a nightly batch job that processes 100 GB of data from an Amazon S3 bucket and loads it into an Amazon Redshift table. The job currently runs on an Amazon EMR cluster. Which service would reduce operational overhead while providing similar functionality?
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
AWS Glue is a serverless ETL service that can process 100 GB of data from S3 and load it into Redshift without managing any infrastructure. It provides built-in job scheduling, automatic retries, and a Spark-based engine that handles large-scale data transformations, directly replacing the EMR cluster's functionality while eliminating operational overhead.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Database Migration Service
Why it's wrong here
DMS is for database migration, not for file-based ETL from S3.
- ✓
AWS Glue
Why this is correct
Glue can run serverless ETL jobs on a schedule, reducing overhead.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon Redshift Spectrum
Why it's wrong here
Spectrum queries S3 directly but does not load data into Redshift tables.
- ✗
Amazon Athena
Why it's wrong here
Athena is for querying, not for loading data into Redshift.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The DEA-C01 exam often tests the distinction between query engines (Athena, Redshift Spectrum) and ETL services (Glue), where candidates mistakenly choose Athena or Spectrum because they can read from S3, but they lack the batch processing and data loading capabilities required for this use case.
Detailed technical explanation
How to think about this question
AWS Glue uses Apache Spark under the hood, automatically determining the number of workers based on the data size (e.g., 100 GB) and handling partitioning, compression, and format conversion. It also integrates with the AWS Glue Data Catalog to store schema metadata, enabling schema evolution and reuse across jobs. In practice, Glue jobs can be triggered by CloudWatch Events or S3 events, making them ideal for nightly batch workflows without manual cluster management.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Data Ingestion and Transformation — study guide chapter
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FAQ
Questions learners often ask
What does this DEA-C01 question test?
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Glue — AWS Glue is a serverless ETL service that can process 100 GB of data from S3 and load it into Redshift without managing any infrastructure. It provides built-in job scheduling, automatic retries, and a Spark-based engine that handles large-scale data transformations, directly replacing the EMR cluster's functionality while eliminating operational overhead.
What should I do if I get this DEA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
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.
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