Question 89 of 1,711
DEA-C01 Data Ingestion and Transformation Practice Question
A company is using Amazon MSK (Managed Streaming for Apache Kafka) to ingest real-time data. They need to transform the data using custom Java code before writing to Amazon S3. The transformation must be fault-tolerant and exactly-once semantics are required. Which AWS service should be used?
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
✓
Kafka Connect with S3 Sink Connector
Kafka Connect with S3 Sink Connector supports exactly-once semantics and custom transformations via Single Message Transforms (SMTs) or custom connectors. Option A (Amazon EMR with Spark Streaming) is for batch processing, not real-time exactly-once from MSK. Option B (AWS Lambda) does not provide exactly-once semantics from MSK. Option D (Kinesis Data Analytics for Apache Flink) is for Flink, not Kafka.
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 EMR with Spark Streaming
Why it's wrong here
Batch-oriented; not ideal for exactly-once with MSK.
- ✗
AWS Lambda consumer for MSK
Why it's wrong here
Lambda does not guarantee exactly-once semantics.
- ✓
Kafka Connect with S3 Sink Connector
Why this is correct
Supports exactly-once and custom transformations.
- ✗
Kinesis Data Analytics for Apache Flink
Why it's wrong here
Designed for Kinesis Streams, not MSK.
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 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.
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