DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 Streams to ingest clickstream data. The data must be transformed and stored in Amazon S3 for batch analytics. The engineer wants to use AWS Lambda for transformation. Which TWO configurations are required? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an event source mapping from the Kinesis stream to the Lambda function.
Options A and D are correct. Option A: Lambda needs an event source mapping to poll from Kinesis. Option D: Lambda needs an IAM role with permissions to read from Kinesis and write to S3. Option B is wrong because Lambda does not write directly to S3 via Kinesis; it writes via the Lambda function. Option C is wrong because Lambda does not use SQS to trigger from Kinesis. Option E is wrong because Lambda does not write to S3 via Firehose; Firehose can directly write to S3.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 the Lambda function to write to S3 via Kinesis Data Firehose.
Why it's wrong here
Lambda writes directly to S3, not via Firehose.
✗
Configure the Kinesis stream to send records directly to S3.
Why it's wrong here
Kinesis Data Streams cannot directly write to S3.
✗
Set up an SQS queue as a destination for Lambda errors.
Why it's wrong here
SQS is not required for transformation.
✓
Create an event source mapping from the Kinesis stream to the Lambda function.
Why this is correct
Event source mapping enables Lambda to poll from Kinesis.
Related concept
Static NAT maps one inside address to one outside address.
✓
Assign an IAM role to Lambda with permissions to read from Kinesis and write to S3.
Why this is correct
Lambda needs permissions to access both services.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Create an event source mapping from the Kinesis stream to the Lambda function. — Options A and D are correct. Option A: Lambda needs an event source mapping to poll from Kinesis. Option D: Lambda needs an IAM role with permissions to read from Kinesis and write to S3. Option B is wrong because Lambda does not write directly to S3 via Kinesis; it writes via the Lambda function. Option C is wrong because Lambda does not use SQS to trigger from Kinesis. Option E is wrong because Lambda does not write to S3 via Firehose; Firehose can directly write to S3.
What should I do if I get this DEA-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DEA-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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