Instant Access Amazon.DVA-C02.v2026-02-16.q395 Actual Practice Test Engine for Free (Page 7)

Question 26

An application ingests data from an Amazon Kinesis data stream. The shards in the data stream are set for normal traffic.
During tests for peak traffic, the application ingests data slowly. A developer needs to adjust the data stream to handle the peak traffic.
What should the developer do to meet this requirement MOST cost-effectively?

A.Switch to on-demand capacity mode for the data stream. Specify a partition key when writing data to the data stream.
B.Increase the shard count in the data stream by using the UpdateShardCount API operation.
C.Decrease the amount of time that data is kept in the data stream by using the DecreaseStreamRetention Period API operation.
D.Install the Kinesis Producer Library {KPL) to ingest data into the data stream.

Question 27

A developer is creating an application that must be able to generate API responses without backend integrations. Multiple internal teams need to work with the API while the application is still in development.
Which solution will meet these requirements with theLEAST operational overhead?

A.Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type.
B.Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC.
C.Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the API resource.
D.Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource.

Correct Answer: D

Comprehensive Detailed and Lengthy Step-by-Step Explanation with All AWS Developer References:
1. Understanding the Use Case:
The API needs to:
* Generate responses without backend integrations:This indicates the use of mock responses for testing.
* Be used by multiple internal teams during development.
* Minimize operational overhead.
2. Key Features of Amazon API Gateway:
* REST APIs:Fully managed API Gateway option that supports advanced capabilities like mock integrations, request/response transformation, and more.
* HTTP APIs:Lightweight option for building APIs quickly. It supports fewer features but has lower operational complexity and cost.
* Mock Integration:Allows API Gateway to return pre-defined responses without requiring backend integration.
3. Explanation of the Options:
* Option A:"Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type."A proxy integration requires a backend service for handling requests. This does not meet the requirement of "no backend integrations."
* Option B:"Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC."This requires setting up a VPC and provisioning resources, which increases operational overhead and is unnecessary for this use case.
* Option C:"Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the APIresource."While HTTP APIs can enable mock integrations, they have limited support for advanced features compared to REST APIs, such as detailed request/response customization. REST APIs are better suited for development environments requiring mock responses.
* Option D:"Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource."This is the correct answer. REST APIs with mock integration allow defining pre- configured responses directly within API Gateway, making them ideal for scenarios where backend services are unavailable. It provides flexibility for testing while minimizing operational overhead.
4. Implementation Steps:
To enable mock integration with REST API:
* Create a REST API in API Gateway:
* Open theAPI Gateway Console.
* ChooseCreate API>REST API.
* Define the API Resource and Methods:
* Add a resource and method (e.g., GET or POST).
* Set Up Mock Integration:
* Select the method, and in theIntegration Type, chooseMock Integration.
* Configure the Mock Response:
* Define a200 OK responsewith the desired response body and headers.
* Deploy the API:
* Deploy the API to a stage (e.g., dev) to make it accessible.
5. Why REST API Over HTTP API?
* REST APIs support detailed request/response transformations and robust mock integration features, which are ideal for development and testing scenarios.
* While HTTP APIs offer lower cost and simplicity, they lack some advanced features required for fine- tuned mock integrations.

Question 28

An application uses an Amazon EC2 Auto Scaling group. A developer notices that EC2 instances are taking a long time to become available during scale-out events. The UserData script is taking a long time to run.
The developer must implement a solution to decrease the time that elapses before an EC2 instance becomes available. The solution must make the most recent version of the application available at all times and must apply all available security updates. The solution also must minimize the number of images that are created. The images must be validated.
Which combination of steps should the developer take to meet these requirements? (Choose two.)

A.Use EC2 Image Builder to create an Amazon Machine Image (AMI). Install all the patches and agents that are needed to manage and run the application. Update the Auto Scaling group launch configuration to use the AMI.
B.Use EC2 Image Builder to create an Amazon Machine Image (AMI). Install the latest version of the application and all the patches and agents that are needed to manage and run the application. Update the Auto Scaling group launch configuration to use the AMI.
C.Set up AWS CodeDeploy to deploy the most recent version of the application at runtime.
D.Set up AWS CodePipeline to deploy the most recent version of the application at runtime.
E.Remove any commands that perform operating system patching from the UserData script.

Question 29

A developer is creating a new REST API by using Amazon API Gateway and AWS Lambda. The development team tests the API and validates responses for the known use cases before deploying the API to the production environment.
The developer wants to make the REST API available for testing by using API Gateway locally.
Which AWS Serverless Application Model Command Line Interface (AWS SAM CLI) subcommand will meet these requirements?

A.Sam local invoke
B.Sam local generate-event
C.Sam local start-lambda
D.Sam local start-api

Question 30

A developer adds new dependencies to an existing AWS Lambda function. The developer cannot deploy the Lambda function because the unzipped deployment package exceeds the maximum size quota for the Lambda function. The instruction set architecture of the Lambda function is x86_64.
The developer must implement a solution to deploy the Lambda function with the new dependencies.
Which solution will meet these requirements?

A.Create a snapshot of all the dependencies. Configure the Lambda function to use the snapshot.
B.Change the instruction set architecture of the Lambda function to use an arm64 architecture.
C.Associate an Amazon Elastic Block Store (Amazon EBS) volume with the Lambda function. Store all the dependencies on the EBS volume.
D.Create and deploy a Lambda container image with all the dependencies.

Question 26

Question 27

Question 28

Question 29

Question 30

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