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 data engineer is designing a data ingestion pipeline for clickstream data that arrives in bursts, up to 100 MB/s, and must be processed with exactly-once semantics. The data must be stored in Amazon S3 partitioned by event date and hour. Which combination of services should the engineer use?
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 with S3 destination and dynamic partitioning.
Amazon Kinesis Data Firehose can buffer and batch data to S3 with partitioning. Option A is correct. Option B is wrong because Lambda cold starts can cause latency. Option C is wrong because Glue is for batch ETL, not real-time. Option D is wrong because KCL requires custom application.
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.
✗
Amazon Kinesis Data Streams with AWS Lambda consumer writing to S3.
Why it's wrong here
Lambda may introduce latency and scaling issues at high throughput.
✓
Amazon Kinesis Data Firehose with S3 destination and dynamic partitioning.
Why this is correct
Firehose handles bursts and supports partitioning with no custom code.
Related concept
Static NAT maps one inside address to one outside address.
✗
AWS Glue streaming ETL job reading from Amazon MSK and writing to S3.
Why it's wrong here
Glue streaming ETL is for structured streaming, but MSK adds complexity.
✗
Amazon Kinesis Data Streams with KCL application writing to S3.
Why it's wrong here
KCL requires custom development and management.
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: Amazon Kinesis Data Firehose with S3 destination and dynamic partitioning. — Amazon Kinesis Data Firehose can buffer and batch data to S3 with partitioning. Option A is correct. Option B is wrong because Lambda cold starts can cause latency. Option C is wrong because Glue is for batch ETL, not real-time. Option D is wrong because KCL requires custom application.
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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