- A
Reduce the number of DPUs to lower cost and accept longer runtime.
Why wrong: Would increase runtime.
- B
Increase the number of Glue workers and choose a G.1X or G.2X worker type.
More workers increase parallelism.
- C
Create a read replica of the RDS instance and point the Glue job to the replica.
Why wrong: Reduces source load but not Glue runtime.
- D
Enable S3 Transfer Acceleration on the destination bucket.
Why wrong: Not relevant to Glue job speed.
Question 1,152 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 uses AWS Glue to run ETL jobs that process data from Amazon RDS to Amazon S3. The jobs run nightly and take 3 hours to complete. The data volume is growing by 20% each month. The engineer needs to reduce job runtime and cost. The source RDS is a db.r5.large instance. Which approach would be MOST effective?
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
✓
Increase the number of Glue workers and choose a G.1X or G.2X worker type.
Option B is correct because increasing the number of Glue workers and choosing a G.1X or G.2X worker type directly increases parallelism and provides more memory per worker, reducing job runtime at a manageable cost increase. Option A is wrong; reducing DPUs would increase runtime, not reduce it. Option C is wrong because a read replica does not improve Glue processing speed; the bottleneck is Glue's processing capacity, not the source database's read capacity. Option D is wrong because S3 Transfer Acceleration improves upload speed to S3, not Glue job processing.
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.
- ✗
Reduce the number of DPUs to lower cost and accept longer runtime.
Why it's wrong here
Would increase runtime.
- ✓
Increase the number of Glue workers and choose a G.1X or G.2X worker type.
Why this is correct
More workers increase parallelism.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a read replica of the RDS instance and point the Glue job to the replica.
Why it's wrong here
Reduces source load but not Glue runtime.
- ✗
Enable S3 Transfer Acceleration on the destination bucket.
Why it's wrong here
Not relevant to Glue job speed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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 DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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: Increase the number of Glue workers and choose a G.1X or G.2X worker type. — Option B is correct because increasing the number of Glue workers and choosing a G.1X or G.2X worker type directly increases parallelism and provides more memory per worker, reducing job runtime at a manageable cost increase. Option A is wrong; reducing DPUs would increase runtime, not reduce it. Option C is wrong because a read replica does not improve Glue processing speed; the bottleneck is Glue's processing capacity, not the source database's read capacity. Option D is wrong because S3 Transfer Acceleration improves upload speed to S3, not Glue job processing.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 20, 2026
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