The correct answer is that Amazon Kinesis Data Firehose offers three primary transformation options: invoking an AWS Lambda function for record-level transformations, using built-in data format conversions to Apache Parquet or ORC, and leveraging dynamic partitioning with Lambda to organize data in S3 by keys like timestamp or customer ID. These options work because Firehose can either call a Lambda function you provide to modify each incoming record, automatically convert the data stream into columnar formats for optimized querying, or use Lambda to dynamically create S3 prefixes based on record attributes. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your understanding of Firehose’s native integration points—a common trap is assuming AWS Glue or Athena can be called directly within the Firehose pipeline, but Glue is not a direct transformation target and Athena is only for querying stored data. Remember the mnemonic “LPD” for Lambda, Parquet/ORC, and Dynamic partitioning to recall the three valid options.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 Amazon Kinesis Data Firehose to deliver data to Amazon S3. The data engineer needs to transform the data before delivery. Which THREE options can be used to perform the transformation?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon Kinesis Data Firehose data format conversion (e.g., JSON to Parquet)
Options A, C, and D are correct. Lambda can transform records, Firehose can convert to Parquet/ORC, and Firehose can invoke Lambda for dynamic partitioning. Option B (Glue) is not integrated with Firehose directly. Option E (Athena) is for querying.
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.
✗
Amazon Athena queries
Why it's wrong here
Athena queries data after delivery.
✗
AWS Glue ETL job
Why it's wrong here
Glue jobs are not directly invoked by Firehose.
✓
Amazon Kinesis Data Firehose data format conversion (e.g., JSON to Parquet)
Why this is correct
Firehose can convert data formats natively.
Related concept
Read the scenario before looking for a memorised answer.
✓
AWS Lambda function
Why this is correct
Firehose can invoke a Lambda function to transform records.
Related concept
Read the scenario before looking for a memorised answer.
✓
Amazon Kinesis Data Firehose dynamic partitioning with Lambda
Why this is correct
Firehose can use Lambda for dynamic partitioning.
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.
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: Amazon Kinesis Data Firehose data format conversion (e.g., JSON to Parquet) — Options A, C, and D are correct. Lambda can transform records, Firehose can convert to Parquet/ORC, and Firehose can invoke Lambda for dynamic partitioning. Option B (Glue) is not integrated with Firehose directly. Option E (Athena) is for querying.
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.
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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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