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Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 99 discussion

Exam question from Amazon's AWS Certified Developer - Associate DVA-C02

Question #: 99
Topic #: 1

[All AWS Certified Developer - Associate DVA-C02 Questions]

A company has an AWS Lambda function that processes incoming requests from an Amazon API Gateway API. The API calls the Lambda function by using a Lambda alias. A developer updated the Lambda function code to handle more details related to the incoming requests. The developer wants to deploy the new Lambda function for more testing by other developers with no impact to customers that use the API.

Which solution will meet these requirements with the LEAST operational overhead?

A. Create a new version of the Lambda function. Create a new stage on API Gateway with integration to the new Lambda version. Use the new API Gateway stage to test the Lambda function.
B. Update the existing Lambda alias used by API Gateway to a weighted alias. Add the new Lambda version as an additional Lambda function with a weight of 10%. Use the existing API Gateway stage for testing.
C. Create a new version of the Lambda function. Create and deploy a second Lambda function to filter incoming requests from API Gateway. If the filtering Lambda function detects a test request, the filtering Lambda function will invoke the new Lambda version of the code. For other requests, the filtering Lambda function will invoke the old Lambda version. Update the API Gateway API to use the filtering Lambda function.
D. Create a new version of the Lambda function. Create a new API Gateway API for testing purposes. Update the integration of the new API with the new Lambda version. Use the new API for testing.

Show Suggested Answer

Suggested Answer: A 🗳️

by chumji at May 14, 2023, 1:08 p.m.

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Comments

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sumanshu

6 months ago

Selected Answer: A

Existing customers continue to use the current stage (e.g., prod), which is integrated with the old Lambda version. The new stage (e.g., test) can point to the new Lambda version without affecting the production stage. B) Eliminated - routing even 10% of traffic to the new Lambda version could cause issues for customers if the new version has any problems. C) Eliminated - This approach introduces an extra Lambda function to filter requests, increasing complexity. D) Eliminated - Creating a new API Gateway involves replicating configurations like authorizers, throttling, and endpoints. Maintaining two separate API Gateways adds long-term management overhead.

upvoted 2 times

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rbryanben

7 months, 3 weeks ago

Selected Answer: C

How not C

upvoted 1 times

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nbxyzd

7 months, 4 weeks ago

Selected Answer: A

It's hands-down A.

upvoted 1 times

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queekao

11 months, 1 week ago

Selected Answer: A

the request is `Which solution will meet these requirements with the LEAST "operational overhead"?`, Therefore solution C is too crazy and the operation will be complex

upvoted 3 times

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65703c1

1 year, 1 month ago

Selected Answer: A

A is the correct answer.

upvoted 2 times

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Alearn

1 year, 6 months ago

Selected Answer: B

Option A requires creating a new stage on API Gateway, which might increase the operational overhead and complexity of managing multiple stages.

upvoted 1 times

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NaghamAbdellatif

1 year, 9 months ago

Why not B? There is canary testing in Lambda Functions

upvoted 1 times

Cerakoted

1 year, 8 months ago

Cuz of it -> new Lambda function for more testing by other developers with no impact to customers that use the API.

upvoted 3 times

[Removed]

1 year, 6 months ago

Thank you for this... I too thought B --> definitely A then

upvoted 1 times

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jayvarma

1 year, 10 months ago

There is no need for us to create an all-new API Gateway in order to test the newer version of lambda. As a newer version of the lambda function is deployed with the necessary changes, a new stage of the API Gateway can be used ot test the changes of the lambda function.

upvoted 3 times

jayvarma

1 year, 10 months ago

So A is the right option

upvoted 2 times

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jipark

1 year, 10 months ago

Selected Answer: A

A : create new API stage (add stage) - correct D: crew new API Gateway (create new one) - incorrect

upvoted 4 times

[Removed]

1 year, 6 months ago

yea D makes no sense. I think it was placed in there to throw people off.

upvoted 1 times

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MrPie

1 year, 11 months ago

Selected Answer: A

A is correct. Why the "correct answer" is always wrong? What's the point?

upvoted 4 times

JamalDaBoss

1 year, 11 months ago

I agree, very stupid

upvoted 1 times

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FunkyFresco

1 year, 12 months ago

Selected Answer: A

A is ok according to my perspective.

upvoted 1 times

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loctong

2 years, 1 month ago

Selected Answer: A

A's true

upvoted 1 times

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delak

2 years, 1 month ago

Selected Answer: A

A is true

upvoted 1 times

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rlnd2000

2 years, 1 month ago

Selected Answer: A

In my perspective, A is the correct answer and a pretty typical pattern; I'm not sure why C was chosen, but testing in production is not a smart practice.

upvoted 1 times

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chumji

2 years, 1 month ago

The answer is A

upvoted 3 times

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