100% Pass 2025 Amazon DVA-C02: AWS Certified Developer - Associate–Valid Valid Exam Duration

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Amazon DVA-C02 exam covers a range of topics related to AWS development, including AWS core services like EC2, S3, and RDS, as well as application services like AWS Lambda, Amazon API Gateway, and AWS Elastic Beanstalk. DVA-C02 exam also covers topics related to security, best practices for developing applications on AWS, and troubleshooting common issues. DVA-C02 Exam consists of multiple-choice questions, and candidates have 130 minutes to complete it.

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Amazon AWS Certified Developer - Associate Sample Questions (Q223-Q228):

NEW QUESTION # 223
A company is using Amazon API Gateway to invoke a new AWS Lambda function The company has Lambda function versions in its PROD and DEV environments. In each environment, there is a Lambda function alias pointing to the corresponding Lambda function version API Gateway has one stage that is configured to point at the PROD alias The company wants to configure API Gateway to enable the PROD and DEV Lambda function versions to be simultaneously and distinctly available Which solution will meet these requirements?

A. Set up a gateway response in API Gateway for the Lambda function alias. Republish PROD and create a new stage for DEV. Create gateway responses in API Gateway for PROD and DEV Lambda aliases
B. Enable a Lambda authorizer for the Lambda function alias in API Gateway Republish PROD and create a new stage for DEV Create API Gateway stage variables for the PROD and DEV stages. Point each stage variable to the PROD Lambda authorizer to the DEV Lambda authorizer.
C. Use an API Gateway stage variable to configure the Lambda function alias Republish PROD and create a new stage for development Create API Gateway stage variables for PROD and DEV stages Point each stage variable to the PROD Lambda function alias and to the DEV Lambda function alias
D. Use an environment variable for the Lambda function alias in API Gateway. Republish PROD and create a new stage for development. Create API gateway environment variables for PROD and DEV stages. Point each stage variable to the PROD Lambda function alias to the DEV Lambda function alias.

Answer: C

Explanation:
API Gateway Stages: Stages in API Gateway represent distinct environments (like PROD and DEV) allowing different configurations.
Stage Variables: Stage variables store environment-specific information, including Lambda function aliases.
Ease of Management: This solution offers a straightforward way to manage different Lambda function versions across environments.
Reference:
API Gateway Stages: https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-stages.html API Gateway Stage Variables: https://docs.aws.amazon.com/apigateway/latest/developerguide/stage-variables.html

NEW QUESTION # 224
A real-time messaging application uses Amazon API Gateway WebSocket APIs with backend HTTP service. A developer needs to build a feature in the application to identify a client that keeps connecting to and disconnecting from the WebSocket connection. The developer also needs the ability to remove the client.
Which combination of changes should the developer make to the application to meet these requirements? (Choose two.)

A. Switch to REST APIs in the backend service.
B. Use the callback URL to disconnect the client from the backend service.
C. Implement $connect and $disconnect routes in the backend service.
D. Add code to track the client status in Amazon ElastiCache in the backend service.
E. Switch to HTTP APIs in the backend service.

Answer: C,D

Explanation:
Option D because by storing the client status in the cache, the backend service can quickly access the client status data without the need to query the database or perform other time- consuming operations.
Option E. Implement $connect and $disconnect routes in the backend service: $connect and
$disconnect are the reserved routes in WebSocket APIs, which are automatically called by API Gateway whenever a client connects or disconnects from the WebSocket. By implementing these routes in the backend service, the developer can track and manage the client status, including identifying and removing the client when needed.

NEW QUESTION # 225
A developer is building a new application that will be deployed on AWS. The developer has created an AWS CodeCommit repository for the application. The developer has initialized a new project for the application by invoking the AWS Cloud Development Kit (AWS CDK) cdk init command.
The developer must write unit tests for the infrastructure as code (IaC) templates that the AWS CDK generates. The developer also must run a validation tool across all constructs in the CDK application to ensure that critical security configurations are activated.
Which combination of actions will meet these requirements with the LEAST development overhead? (Choose two.)

A. Use the CDK runtime context to set key-value pairs that must be present in the cdk.out file that the AWS CDK generates. Fail the stack synthesis if any violations are present.
B. Use a unit testing framework to write custom unit tests against the cdk.out file that the AWS CDK generates. Run the unit tests in a continuous integration and continuous delivery (CI/CD) pipeline that is invoked after any commit to the repository.
C. Use the CDK Aspects class to create custom rules to apply to the CDK application. Fall the stack synthesis if any violations are present.
D. Use the CDK assertions module to integrate unit tests with the application. Run the unit tests in a continuous integration and continuous delivery (CI/CD) pipeline that is invoked after any commit to the repository.
E. Write a script that searches the application for specific key configuration strings. Configure the script to produce a report of any security violations.

Answer: C,D

NEW QUESTION # 226
A company is creating a new application that gives users the ability to upload and share short video files. The average size of the video files is 10 MB. After a user uploads a file, a message needs to be placed into an Amazon Simple Queue Service (Amazon SQS) queue so the file can be processed. The files need to be accessible for processing within 5 minutes.
Which solution will meet these requirements MOST cost-effectively?

A. Write messages that contain the contents of the uploaded files to the SQS queue.
B. Write the files to Amazon S3 Glacier Deep Archive. Add the S3 location of the files to the SQS queue.
C. Write the files to Amazon S3 Standard. Add the S3 location of the files to the SQS queue.
D. Write the files to an Amazon Elastic Block Store (Amazon EBS) General Purpose SSD volume. Add the EBS location of the files to the SQS queue.

Answer: C

Explanation:
* Why Option B is Correct:
* Amazon S3 Standard provides immediate access to files and is cost-effective for files that need to be accessed within 5 minutes.
* By adding the S3 location to the SQS queue, you avoid transferring large files directly, which is both more efficient and scalable.
* Why Other Options are Incorrect:
* Option A: S3 Glacier Deep Archive is designed for archival storage with retrieval times ranging from minutes to hours, which does not meet the 5-minute requirement.
* Option C: Amazon EBS is designed for block storage attached to EC2 instances, which adds unnecessary complexity and cost.
* Option D: SQS is not designed to handle large file content directly and has message size limits (256 KB).
* AWS Documentation References:
* Amazon S3 Overview
* Amazon SQS Best Practices

NEW QUESTION # 227
A developer is writing a serverless application that requires an AWS Lambda function to be invoked every 10 minutes.
What is an automated and serverless way to invoke the function?

A. Configure an environment variable named PERIOD for the Lambda function. Set the value to 600.
B. Create an Amazon Simple Notification Service (Amazon SNS) topic that has a subscription to the Lambda function with a 600-second timer.
C. Create an Amazon EventBridge rule that runs on a regular schedule to invoke the Lambda function.
D. Deploy an Amazon EC2 instance based on Linux, and edit its /etc/crontab file by adding a command to periodically invoke the Lambda function.

Answer: C

Explanation:
Amazon EventBridge can be used to run Lambda functions on a regular schedule. You can set a cron or rate expression to define the schedule.

NEW QUESTION # 228
......

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100% Pass 2025 Amazon DVA-C02: AWS Certified Developer - Associate–Valid Valid Exam Duration

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Amazon AWS Certified Developer - Associate Sample Questions (Q223-Q228):

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