Amazon Exam DVA-C02 Topic 7 Question 17 Discussion

Actual exam question for Amazon's DVA-C02 exam

Question #: 17
Topic #: 7

A company developed an API application on AWS by using Amazon CloudFront, Amazon API Gateway, and AWS Lambd

a. The API has a

minimum of four requests every second. A developer notices that many API users run the same query by using the POST method. The developer

wants to cache the POST request to optimize the API resources.

Which solution will meet these requirements?

AConfigure the CloudFront cache. Update the application to return cached content based upon the default request headers.

BOverride the cache method in the selected stage of API Gateway. Select the POST method.

CSave the latest request response in Lambda /tmp directory. Update the Lambda function to check the /tmp directory.

DSave the latest request in AWS Systems Manager Parameter Store. Modify the Lambda function to take the latest request response from Parameter Store.

Show Suggested Answer

Suggested Answer: B

Amazon API Gateway provides tools for creating and documenting web APIs that route HTTP requests to Lambda functions2. You can secure access to your API with authentication and authorization controls.Your APIs can serve traffic over the internet or can be accessible only within your VPC2.You can override the cache method in the selected stage of API Gateway2. Therefore, option B is correct.

by Quentin at Dec 12, 2023, 02:28 PM

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Billye

1 years ago

Agreed, Melodie. And option D, using Systems Manager Parameter Store? That seems overkill for this use case. Let's stick with the CloudFront caching solution.

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Rebecka

1 years ago

B) Override the cache method in the selected stage of API Gateway. Select the POST method.

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Ceola

1 years ago

Yeah, I agree. Let's go with the simpler solution.

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Filiberto

1 years ago

A) Configure the CloudFront cache. Update the application to return cached content based upon the default request headers.

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Garry

1 years ago

But wouldn't that be more complicated than just using CloudFront caching?

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Yun

1 years ago

B) Override the cache method in the selected stage of API Gateway. Select the POST method.

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Carin

1 years ago

I think that's the best option to optimize the API resources.

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Selma

1 years ago

A) Configure the CloudFront cache. Update the application to return cached content based upon the default request headers.

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Melodie

1 years ago

Ah, good point, Remona. Option C is definitely not the way to go. Storing request responses in the Lambda /tmp directory? That's just asking for trouble.

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Remona

1 years ago

Haha, imagine if the developer tried to cache the requests in the Lambda /tmp directory. That would be a disaster waiting to happen!

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Fanny

1 years ago

Alright, I think we've got it. Option A is the way to go. Time to move on to the next question and hope the rest of the exam is just as straightforward!

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