DEA-C01 Data Ingestion and Transformation Practice Question
A company is using Amazon Kinesis Data Firehose to deliver data to an Amazon S3 bucket. The data is delivered in 5-minute intervals. The company wants to reduce the delivery frequency to 1 minute to get data faster. Which parameter should be changed in the Firehose delivery stream configuration?
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
✓
Reduce the buffer interval from 300 seconds to 60 seconds.
The buffer interval determines how often data is delivered to the destination. Changing it from 300 seconds to 60 seconds will deliver data every minute. Option B (buffer size) affects delivery based on data volume, not time. Option C (compression) does not affect frequency. Option D (partitioning) does not affect delivery frequency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Reduce the buffer interval from 300 seconds to 60 seconds.
Why this is correct
The buffer interval controls the maximum time between deliveries.
- ✗
Increase the buffer size to trigger delivery sooner.
Why it's wrong here
Increasing buffer size would delay delivery until more data accumulates.
- ✗
Enable dynamic partitioning to deliver data more frequently.
Why it's wrong here
Dynamic partitioning affects how data is organized, not delivery frequency.
- ✗
Enable compression to reduce data size and speed up delivery.
Why it's wrong here
Compression does not affect delivery frequency.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.