Quick Answer
The answer is Amazon Kinesis Data Streams with Kinesis Data Firehose delivery to S3, as this combination directly addresses the need for real-time streaming to S3 with Kinesis while remaining cost-effective. Kinesis Data Streams ingests the high-throughput data from 10,000 devices at 1 KB per second, and Firehose automatically batches and delivers that data to S3 in near real-time, with optional Lambda transformations for processing. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of streaming ingestion versus batch-oriented or managed alternatives; a common trap is choosing SQS FIFO for its ordering, but it cannot handle the required throughput, while MSK adds unnecessary operational overhead. Remember the memory tip: “Streams for speed, Firehose for S3 feed”—Kinesis Data Streams handles the firehose of incoming data, and Firehose handles the hose to S3, making them the natural pair for cost-effective, real-time analytics pipelines.
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 streaming pipeline that ingests IoT sensor data from 10,000 devices. Each device sends a 1 KB message every second. The data must be processed in near real-time and stored in S3 for analytics. Which combination of services provides the most cost-effective solution?
AWS Data Pipeline with periodic S3 copy.
Why wrong: Not near real-time.
Amazon Kinesis Data Streams with Kinesis Data Firehose delivery to S3.
Handles high throughput, Firehose batches to S3.
Amazon MSK (Managed Streaming for Kafka) with Kafka Connect S3 sink.
Why wrong: More complex and costly.
Amazon SQS FIFO queue with Lambda consumers writing to S3.
Why wrong: SQS FIFO throughput is limited (300 TPS).
Answer choices
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 Streams with Kinesis Data Firehose delivery to S3.
Option B is correct because Kinesis Data Streams ingests high-throughput data, and Firehose delivers batches to S3 with optional Lambda transformations. Option A is wrong because SQS FIFO is not designed for high-throughput streaming. Option C is wrong because MSK requires more management. Option D is wrong because Data Pipeline is batch-oriented.
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
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Data Pipeline with periodic S3 copy.
Why it's wrong here
Not near real-time.
Amazon Kinesis Data Streams with Kinesis Data Firehose delivery to S3.
Why this is correct
Handles high throughput, Firehose batches to S3.
Related concept
Static NAT maps one inside address to one outside address.
Amazon MSK (Managed Streaming for Kafka) with Kafka Connect S3 sink.
Why it's wrong here
More complex and costly.
Amazon SQS FIFO queue with Lambda consumers writing to S3.
Why it's wrong here
SQS FIFO throughput is limited (300 TPS).
Common exam traps
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
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.
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
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
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 — study guide chapter
Learn the concepts, then practise the questions
Data Ingestion and Transformation practice questions
Targeted practice on this topic area only
All DEA-C01 questions
1,786 questions across all exam domains
AWS Certified Data Engineer Associate DEA-C01 study guide
Full concept coverage aligned to exam objectives
DEA-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise DEA-C01 questions linked to Data Ingestion and Transformation.
Practise DEA-C01 questions linked to Data Operations and Support.
Practise DEA-C01 questions linked to Data Security and Governance.
Practise DEA-C01 questions linked to Data Store Management.
Practise DEA-C01 questions linked to DEA-C01 fundamentals.
Practise DEA-C01 questions linked to DEA-C01 scenario.
Practise DEA-C01 questions linked to DEA-C01 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Static NAT maps one inside address to one outside address..
The correct answer is: Amazon Kinesis Data Streams with Kinesis Data Firehose delivery to S3. — Option B is correct because Kinesis Data Streams ingests high-throughput data, and Firehose delivers batches to S3 with optional Lambda transformations. Option A is wrong because SQS FIFO is not designed for high-throughput streaming. Option C is wrong because MSK requires more management. Option D is wrong because Data Pipeline is batch-oriented.
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.
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A data engineer is designing a real-time streaming pipeline to ingest clickstream data from a website into Amazon S3. The data must be transformed before storage. Which TWO AWS services can be used together to build this pipeline? (Choose TWO.)
easyWhy A: Option A and Option E are correct. Amazon Kinesis Data Streams (A) can ingest streaming data, and Amazon Kinesis Data Firehose (E) can deliver the data to S3 with optional transformation via Lambda. Option B (S3 Transfer Acceleration) is for accelerating uploads to S3, not for streaming. Option C (AWS DMS) is for database migration. Option D (AWS Glue) is for batch ETL, not real-time.
Keep practising
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.