The answer is Amazon Kinesis Data Streams and Amazon Kinesis Data Firehose. Kinesis Data Streams provides the durable, scalable ingestion layer needed to capture high-velocity streaming data from the e-commerce application, while Kinesis Data Firehose handles the automated delivery to S3 with built-in retry logic for failed records, ensuring no data loss during variable throughput spikes. On the AWS Certified Data Engineer Associate DEA-C01 exam, this pairing tests your understanding of the separation of concerns in streaming architectures: the stream for real-time capture and the delivery stream for buffering, transforming, and reliably landing data in S3. A common trap is choosing AWS Lambda as a primary ingestion service, but Lambda is better suited for lightweight processing within the pipeline, not for handling high-throughput streaming ingestion directly. Remember the memory tip: “Streams hold the fire, Firehose delivers the hose”—the stream captures the data, and Firehose pushes it to the destination with retry safety.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 needs to ingest streaming data from an e-commerce application into Amazon S3 for near-real-time analytics. The solution must handle variable throughput and allow reprocessing of failed records. Which TWO AWS services should the engineer use? (Choose two.)
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
Amazon Kinesis Data Streams ingests streaming data reliably, and Amazon Kinesis Data Firehose delivers it to S3 with retry logic. Option A (Amazon SQS) is for message queues, not streaming ingestion. Option B (Amazon RDS) is a database. Option D (AWS Lambda) can process records but is not the primary ingestion service for high-throughput streaming. Option E (Amazon DynamoDB Streams) is for CDC from DynamoDB, not general streaming.
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 Kinesis Data Streams
Why this is correct
Kinesis Data Streams ingests and stores streaming data in shards for real-time processing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon SQS
Why it's wrong here
SQS is a message queue service, not designed for high-throughput streaming ingestion.
✗
Amazon DynamoDB Streams
Why it's wrong here
DynamoDB Streams captures changes to DynamoDB tables, not general streaming data.
✓
Amazon Kinesis Data Firehose
Why this is correct
Kinesis Data Firehose delivers streaming data to S3 with automatic buffering, compression, and retry.
Related concept
Read the scenario before looking for a memorised answer.
✗
Amazon RDS
Why it's wrong here
RDS is a relational database, not a streaming ingestion service.
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 Streams — Amazon Kinesis Data Streams ingests streaming data reliably, and Amazon Kinesis Data Firehose delivers it to S3 with retry logic. Option A (Amazon SQS) is for message queues, not streaming ingestion. Option B (Amazon RDS) is a database. Option D (AWS Lambda) can process records but is not the primary ingestion service for high-throughput streaming. Option E (Amazon DynamoDB Streams) is for CDC from DynamoDB, not general streaming.
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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