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.
Refer to the exhibit. A Lambda function with this IAM policy is used to process records from a Kinesis stream and write to S3. The function is failing with access denied errors when writing to S3. What is the issue?
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 name in the policy does not match the actual bucket used by the function.
The correct answer is D. The IAM policy grants s3:PutObject permission on the resource 'my-bucket/*', but the Lambda function is attempting to write to an S3 bucket with a different name. Since the bucket name in the policy does not match the actual bucket used by the function, access is denied. Option A is incorrect because the function does not need Kinesis Data Analytics for transformation. Option B is incorrect because the policy includes GetRecords and other Kinesis actions, so the Kinesis stream ARN is not the issue (if it were invalid, the error would occur when reading, not writing). Option C is incorrect because the policy explicitly allows Kinesis actions like GetRecords and DescribeStream, so the function does have permission to read from the stream.
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 function needs to use Kinesis Data Analytics for transformation.
Why it's wrong here
Not related to permissions.
✗
The Kinesis stream ARN is incorrect.
Why it's wrong here
Would cause errors on stream side, not S3.
✗
The Lambda function does not have permission to read from the Kinesis stream.
Why it's wrong here
It has GetRecords, GetShardIterator, DescribeStream.
✓
The S3 bucket name in the policy does not match the actual bucket used by the function.
Why this is correct
Common cause of access denied.
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.
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.
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 name in the policy does not match the actual bucket used by the function. — The correct answer is D. The IAM policy grants s3:PutObject permission on the resource 'my-bucket/*', but the Lambda function is attempting to write to an S3 bucket with a different name. Since the bucket name in the policy does not match the actual bucket used by the function, access is denied. Option A is incorrect because the function does not need Kinesis Data Analytics for transformation. Option B is incorrect because the policy includes GetRecords and other Kinesis actions, so the Kinesis stream ARN is not the issue (if it were invalid, the error would occur when reading, not writing). Option C is incorrect because the policy explicitly allows Kinesis actions like GetRecords and DescribeStream, so the function does have permission to read from the stream.
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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Question Discussion
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