Question 831 of 1,711
DEA-C01 Data Ingestion and Transformation Practice Question
A data engineer needs to ingest JSON files from an Amazon S3 bucket into an Amazon DynamoDB table. The files are uploaded every hour. Which THREE services can be used together to build this ingestion pipeline?
⚠ Common exam trap
Candidates often confuse DynamoDB Streams (for capturing table changes) with the ingestion pipeline itself, or incorrectly assume Step Functions is needed for simple event-driven workflows, when SQS+Lambda is the standard serverless pattern for this use case.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon SQS
Amazon SQS is correct because it decouples the ingestion pipeline, allowing S3 Event Notifications to send messages to an SQS queue when new JSON files arrive. AWS Lambda can then poll the SQS queue to process the files and write to DynamoDB, ensuring reliable, asynchronous ingestion without data loss.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Step Functions
Why it's wrong here
Step Functions can orchestrate but adds complexity; not necessary for simple ingestion.
- ✓
Amazon SQS
Why this is correct
SQS can decouple S3 events from Lambda for reliability.
- ✗
Amazon DynamoDB Streams
Why it's wrong here
DynamoDB Streams captures changes to DynamoDB, not needed for ingestion.
- ✓
Amazon S3 Event Notifications
Why this is correct
S3 Events can trigger Lambda on object creation.
- ✓
AWS Lambda
Why this is correct
Lambda can read from S3 and write to DynamoDB.
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 |
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Last reviewed: Jun 24, 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.
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