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Amazon DVA-C02 Exam - Topic 3 Question 51 Discussion

Actual exam question for Amazon's DVA-C02 exam
Question #: 51
Topic #: 3
[All DVA-C02 Questions]

A company is using the AWS Serverless Application Model (AWS SAM) to develop a social media application. A developer needs a quick way to test AWS Lambda functions locally by using test event payloads. The developer needs the structure of these test event payloads to match the actual events that AWS services create.

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Suggested Answer: D

Comprehensive Detailed Step by Step Explanation with All AWS Developer Reference:

The AWS Serverless Application Model (SAM) includes features for local testing and debugging of AWS Lambda functions. One of the most efficient ways to generate test payloads that match actual AWS event structures is by using the sam local generate-event command.

sam local generate-event: This command allows developers to create pre-configured test event payloads for various AWS services (e.g., S3, API Gateway, SNS). These generated events accurately reflect the format that the service would use in a live environment, reducing the manual work required to create these events from scratch.

Operational Overhead: This approach reduces overhead since the developer does not need to manually create or maintain test events. It ensures that the structure is correct and up-to-date with the latest AWS standards.

Alternatives:

Option A suggests using shareable test events, but manually creating or sharing these events introduces more overhead.

Option B and C both involve manually storing and maintaining test events, which adds unnecessary complexity compared to using sam local generate-event.


AWS SAM CLI documentation

by Lynette at Jun 10, 2025, 03:10 PM

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Ashton
3 months ago
A sounds cool, but how do you share them?
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Luann
3 months ago
I think B is better for keeping things organized.
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Annmarie
3 months ago
Wait, can you really generate events with D? That’s awesome!
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Merrilee
3 months ago
C seems unnecessary, why not just keep it local?
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Malcom
3 months ago
D is the easiest way to generate test events!
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Rodney
4 months ago
I definitely practiced creating shareable test events, but I can't recall if that's the best approach for local testing.
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Lamonica
4 months ago
I feel like I saw a question about storing test events in S3, but it seems more complicated than just keeping them locally.
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Magda
4 months ago
I think using the `sam local generate-event` command could be a quick way to get the right structure for the test events.
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Noel
4 months ago
I remember practicing with the `sam local invoke` command, but I'm not sure if I should store the payloads locally or in S3.
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Catina
4 months ago
Ah, the sam local generate-event command! That sounds like exactly what I need. I bet that will give me the right structure for the test event payloads. I'm feeling pretty confident about this one.
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Jesse
5 months ago
The sam local invoke command looks promising, but I'm not sure if I should be storing the test event payloads locally or in an S3 bucket. I'll need to research the differences between those two options to decide which one is better.
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Lucina
5 months ago
Hmm, I'm a bit unsure about this one. I know we need to test the Lambda functions locally, but I'm not sure if creating shareable test events or storing them locally/in S3 is the right approach. I'll have to think this through a bit more.
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Nathalie
5 months ago
This seems pretty straightforward. I think the key is finding a way to get test event payloads that match the actual events from AWS services. Option D looks like the best approach for that.
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