DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Network Topology
Refer to the exhibit. A data engineer runs an AWS Glue job that fails with an 'Access Denied' error when writing to S3. The IAM role attached to the job has s3:PutObject permission on the output bucket. What additional configuration is most likely missing?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The S3 bucket policy does not grant access to the Glue job's IAM role
Option C is correct because the error shows 'Access Denied' when writing, and the job uses Glue version 3.0 (which includes Spark 3.1), which may require the S3 bucket to have a bucket policy that allows the Glue service principal or a VPC endpoint. Often the issue is that the S3 bucket policy does not allow the Glue job's IAM role. Option A (KMS) is possible but not mentioned. Option B (VPC) might be needed if the job is in a VPC. Option D (CloudWatch) is not related.
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.
✗
The Glue job is not configured to write to S3 with the correct prefix
Why it's wrong here
Would cause a different error like 'No such file or directory'.
✓
The S3 bucket policy does not grant access to the Glue job's IAM role
Why this is correct
Even if IAM allows, bucket policy can deny; this is a common misconfiguration.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The Glue job is running in a VPC without an S3 VPC endpoint
Why it's wrong here
Could be an issue, but the error is access denied, not network.
✗
The S3 bucket is encrypted with AWS KMS and the IAM role lacks kms:Decrypt permission
Why it's wrong here
Possible but not indicated; the error message doesn't mention KMS.
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 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.
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.
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: The S3 bucket policy does not grant access to the Glue job's IAM role — Option C is correct because the error shows 'Access Denied' when writing, and the job uses Glue version 3.0 (which includes Spark 3.1), which may require the S3 bucket to have a bucket policy that allows the Glue service principal or a VPC endpoint. Often the issue is that the S3 bucket policy does not allow the Glue job's IAM role. Option A (KMS) is possible but not mentioned. Option B (VPC) might be needed if the job is in a VPC. Option D (CloudWatch) is not related.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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.
Question Discussion
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