Pass Using DVA-C02 Exam Dumps

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Question 40

A developer is designing a serverless application for a game in which users register and log in through a web browser The application makes requests on behalf of users to a set of AWS Lambda functions that run behind an Amazon API Gateway HTTP API

The developer needs to implement a solution to register and log in users on the application's sign-in page. The solution must minimize operational overhead and must minimize ongoing management of user identities.

Which solution will meet these requirements'?

Options:

Create Amazon Cognito user pools for external social identity providers Configure 1AM roles for the identity pools.

Program the sign-in page to create users' 1AM groups with the 1AM roles attached to the groups

Create an Amazon RDS for SQL Server DB instance to store the users and manage the permissions to the backend resources in AWS

Configure the sign-in page to register and store the users and their passwords in an Amazon DynamoDB table with an attached IAM policy.

Question 41

A developer is creating an AWS CloudFormation template to deploy Amazon EC2 instances across multiple AWS accounts. The developer must choose the EC2 instances from a list of approved instance types.

How can the developer incorporate the list of approved instance types in the CloudFormation template?

Options:

Create a separate CloudFormation template for each EC2 instance type in the list.

In the Resources section of the CloudFormation template, create resources for each EC2 instance type in the list.

In the CloudFormation template, create a separate parameter for each EC2 instance type in the list.

In the CloudFormation template, create a parameter with the list of EC2 instance types as AllowedValues.

Question 42

A developer is building a serverless application that is based on AWS Lambda. The developer initializes the AWS software development kit (SDK) outside of the Lambda handcar function.

What is the PRIMARY benefit of this action?

Options:

Improves legibility and systolic convention

Takes advantage of runtime environment reuse

Provides better error handling

Creates a new SDK instance for each invocation

Question 43

A developer wants to add request validation to a production environment Amazon API Gateway API. The developer needs to test the changes

before the API is deployed to the production environment. For the test, the developer will send test requests to the API through a testing tool.

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

Options:

Export the existing API to an OpenAPI file. Create a new API. Import the OpenAPI file. Modify the new API to add request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.

Modify the existing API to add request validation. Deploy the updated API to a new API Gateway stage. Perform the tests. Deploy the updated API to the API Gateway production stage.

Create a new API. Add the necessary resources and methods, including new request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.

Clone the existing API. Modify the new API to add request validation. Perform the tests. Modify the existing API to add request validation. Deploy the existing API to production.