- A
Configure AWS Step Functions to poll the S3 bucket every minute and start the Glue job if new files exist.
Why wrong: Step Functions is overkill and polling is inefficient compared to event-driven approach.
- B
Configure Amazon CloudWatch Events to trigger the Glue job on a schedule that checks for new files.
Why wrong: CloudWatch Events cannot directly detect new S3 objects; a scheduled job would check periodically, causing delays.
- C
Use Amazon Simple Queue Service (SQS) to queue file metadata and have a Lambda function poll the queue to start the Glue job.
Why wrong: SQS is unnecessary overhead; S3 event notifications directly invoke Lambda.
- D
Set up an S3 event notification on the bucket to invoke an AWS Lambda function that starts the Glue job.
S3 event notifications can invoke Lambda immediately when a new file is uploaded.
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.
A healthcare company is building a data pipeline to ingest electronic health records (EHR) from hospitals. The data is sent as JSON files via SFTP to an on-premises server. The company wants to move this data to AWS using AWS Transfer Family (SFTP) and then process it with AWS Glue. Data sovereignty regulations require that all data remain within the EU (Frankfurt) region. The pipeline must detect when a new file arrives and start the Glue job automatically. The engineer has set up an AWS Transfer Family server in Frankfurt, and files are uploaded to an S3 bucket in the same region. However, the Glue job is not triggering automatically. The engineer needs to implement automated triggering. What should the engineer do?
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
Set up an S3 event notification on the bucket to invoke an AWS Lambda function that starts the Glue job.
Option B is correct: S3 event notifications can be configured to invoke Lambda when a new object is created, and Lambda can start the Glue job. Option A (CloudWatch Events) cannot directly monitor S3 object creation. Option C (SQS) is not needed. Option D (Step Functions) adds unnecessary complexity.
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.
- ✗
Configure AWS Step Functions to poll the S3 bucket every minute and start the Glue job if new files exist.
Why it's wrong here
Step Functions is overkill and polling is inefficient compared to event-driven approach.
- ✗
Configure Amazon CloudWatch Events to trigger the Glue job on a schedule that checks for new files.
Why it's wrong here
CloudWatch Events cannot directly detect new S3 objects; a scheduled job would check periodically, causing delays.
- ✗
Use Amazon Simple Queue Service (SQS) to queue file metadata and have a Lambda function poll the queue to start the Glue job.
Why it's wrong here
SQS is unnecessary overhead; S3 event notifications directly invoke Lambda.
- ✓
Set up an S3 event notification on the bucket to invoke an AWS Lambda function that starts the Glue job.
Why this is correct
S3 event notifications can invoke Lambda immediately when a new file is uploaded.
Related concept
Read the scenario before looking for a memorised answer.
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.
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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: Set up an S3 event notification on the bucket to invoke an AWS Lambda function that starts the Glue job. — Option B is correct: S3 event notifications can be configured to invoke Lambda when a new object is created, and Lambda can start the Glue job. Option A (CloudWatch Events) cannot directly monitor S3 object creation. Option C (SQS) is not needed. Option D (Step Functions) adds unnecessary complexity.
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
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Last reviewed: Jun 20, 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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