- A
Amazon CloudWatch Logs
Can capture API Gateway execution logs.
- B
AWS CloudTrail
Logs API calls for governance.
- C
VPC Flow Logs
Why wrong: Logs network traffic, not API requests.
- D
Amazon S3 server access logs
Why wrong: Logs S3 requests, not API calls.
- E
Amazon Route 53 logs
Why wrong: Logs DNS queries.
Question 720 of 1,616
Logging API Requests: CloudWatch Logs & CloudTrail
This DVA-C02 practice question tests your understanding of development with aws services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer is building a serverless application that uses Amazon S3 for static website hosting and AWS Lambda for dynamic API calls. The developer wants to enable logging of all API requests. Which TWO services can be used to log API requests? (Choose TWO.)
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 CloudWatch Logs is correct because it can capture and store logs from AWS Lambda function executions. When a Lambda function is invoked via an API request (e.g., through Amazon API Gateway), the function's execution details, including request IDs, timestamps, and error messages, are automatically sent to CloudWatch Logs. This enables developers to monitor and troubleshoot API-driven serverless applications.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 CloudWatch Logs
Why this is correct
Can capture API Gateway execution logs.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
AWS CloudTrail
Why this is correct
Logs API calls for governance.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
VPC Flow Logs
Why it's wrong here
Logs network traffic, not API requests.
- ✗
Amazon S3 server access logs
Why it's wrong here
Logs S3 requests, not API calls.
- ✗
Amazon Route 53 logs
Why it's wrong here
Logs DNS queries.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse S3 server access logs (which log S3 bucket operations) with API request logging, or mistakenly think VPC Flow Logs can capture HTTP-level API calls when they only capture network-layer traffic.
Detailed technical explanation
How to think about this question
Under the hood, CloudWatch Logs integrates with Lambda via the AWS Lambda runtime environment, which automatically streams log output (stdout/stderr) and execution metadata to a log group named /aws/lambda/<function-name>. For API Gateway-driven APIs, you can also enable CloudWatch Logs at the API Gateway stage level to capture full request/response data, including headers and body, which is critical for debugging authentication failures or payload issues in production.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch Logs — Amazon CloudWatch Logs is correct because it can capture and store logs from AWS Lambda function executions. When a Lambda function is invoked via an API request (e.g., through Amazon API Gateway), the function's execution details, including request IDs, timestamps, and error messages, are automatically sent to CloudWatch Logs. This enables developers to monitor and troubleshoot API-driven serverless applications.
What should I do if I get this DVA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This DVA-C02 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 DVA-C02 exam.
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