DEA-C01 Data Operations and Support Practice Question
A team uses Amazon Kinesis Data Analytics to process streaming data. They notice that the application's output is delayed. Which AWS service can be used to monitor the application's performance and identify bottlenecks?
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 CloudWatch
(Amazon CloudWatch) is correct because CloudWatch provides metrics and logs for monitoring Kinesis Data Analytics application performance, such as CPU utilization, memory usage, and throughput, helping to identify bottlenecks causing output delays. Option A (AWS CloudTrail) is used for auditing API calls, not performance monitoring. Option C (Amazon Athena) is an interactive query service for analyzing data in S3, not for monitoring real-time streaming applications. Option D (AWS X-Ray) traces requests through applications but is not the primary tool for monitoring Kinesis Data Analytics performance.
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 CloudTrail
Why it's wrong here
CloudTrail logs API calls, not performance metrics.
- ✓
Amazon CloudWatch
Why this is correct
CloudWatch monitors Kinesis Data Analytics with metrics like MillisBehindLatest and CPU utilization.
- ✗
Amazon Athena
Why it's wrong here
Athena is for querying data in S3, not monitoring streaming applications.
- ✗
AWS X-Ray
Why it's wrong here
X-Ray traces requests but is not designed for monitoring Kinesis Data Analytics.
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.