Amazon Web Services pass4future aws Certified Associate Dva-c02 New Questions by Hadi q26 vce pdf

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Exam Name:	AWS Certified Developer - Associate
Exam Code:	DVA-C02 Dumps
Vendor:	Amazon Web Services	Certification:	AWS Certified Associate
Questions:	292 Q&A's	Shared By:	hadi

Question 24

A developer is creating a mobile app that calls a backend service by using an Amazon API Gateway REST API. For integration testing during the development phase, the developer wants to simulate different backend responses without invoking the backend service.

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

Options:

Create an AWS Lambda function. Use API Gateway proxy integration to return constant HTTP responses.

Create an Amazon EC2 instance that serves the backend REST API by using an AWS CloudFormation template.

Customize the API Gateway stage to select a response type based on the request.

Use a request mapping template to select the mock integration response.

Discussion

Question 25

A company is using an AWS Lambda function to process records from an Amazon Kinesis data stream. The company recently observed slow processing of the records. A developer notices that the iterator age metric for the function is increasing and that the Lambda run duration is constantly above normal.

Which actions should the developer take to increase the processing speed? (Choose two.)

Options:

Increase the number of shards of the Kinesis data stream.

Decrease the timeout of the Lambda function.

Increase the memory that is allocated to the Lambda function.

Decrease the number of shards of the Kinesis data stream.

Increase the timeout of the Lambda function.

Discussion

Question 26

A developer created an AWS Lambda function that accesses resources in a VPC. The Lambda function polls an Amazon Simple Queue Service (Amazon SOS) queue for new messages through a VPC endpoint. Then the function calculates a rolling average of the numeric values that are contained in the messages. After initial tests of the Lambda function, the developer found that the value of the rolling average that the function returned was not accurate.

How can the developer ensure that the function calculates an accurate rolling average?

Options:

Set the function's reserved concurrency to 1. Calculate the rolling average in the function. Store the calculated rolling average in Amazon ElastiCache.

Modify the function to store the values in Amazon ElastiCache. When the function initializes, use the previous values from the cache to calculate the rolling average.

Set the function's provisioned concurrency to 1. Calculate the rolling average in the function. Store the calculated rolling average in Amazon ElastiCache.

Modify the function to store the values in the function's layers. When the function initializes, use the previously stored values to calculate the rolling average.

Discussion

Question 27

A company uses AWS X-Ray to monitor a serverless application. The components of the application have different request rates. The user interactions and transactions are important to trace, but they are low in volume. The background processes such as application health checks, polling, and connection maintenance generate high volumes of read-only requests.

Currently, the default X-Ray sampling rules are universal for all requests. Only the first request per second and some additional requests are recorded. This setup is not helping the company review the requests based on service or request type.

A developer must configure rules to trace requests based on service or request properties. The developer must trace the user interactions and transactions without wasting effort recording minor background tasks.

Which solution will meet these requirements?

Options:

Disable sampling for high-volume read-only requests. Sample at a lower rate for all requests that handle user interactions or transactions.

Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a higher rate.

Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a lower rate.

Disable sampling for high-volume read-only requests. Sample at a higher rate for all requests that handle user interactions or transactions.

Discussion

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