ANS-C01 Network Management and Operations Practice Question
A network engineer needs to capture and analyze DNS query logs generated by Amazon Route 53. Which AWS service should be used to store and query these logs?
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 Logs
Amazon Route 53 can be configured to log DNS queries to Amazon CloudWatch Logs. CloudWatch Logs provides a centralized location to store and query these logs using CloudWatch Logs Insights. Option A (AWS CloudTrail) records API calls, not DNS queries. Option B (Amazon Kinesis Data Firehose) is a streaming data delivery service that can deliver logs to destinations like S3, but it does not directly store logs for querying. Option D (Amazon S3) is an object storage service and requires additional services (e.g., Athena) to query logs. Therefore, Amazon CloudWatch Logs is the correct service for storing and querying Route 53 DNS query logs directly.
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 records API activity, not DNS queries.
- ✗
Amazon Kinesis Data Firehose
Why it's wrong here
Firehose can stream logs but is not a storage service.
- ✓
Amazon CloudWatch Logs
Why this is correct
Route 53 can publish DNS query logs to CloudWatch Logs for analysis.
- ✗
Amazon S3
Why it's wrong here
S3 can store logs but is not directly queryable without Athena.
Visual reference
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-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 ANS-C01 exam.