RELIABLE DVA-C02 EXAM DUMPS | DVA-C02 REAL EXAM

Reliable DVA-C02 Exam Dumps | DVA-C02 Real Exam

Reliable DVA-C02 Exam Dumps | DVA-C02 Real Exam

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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.

Amazon AWS Certified Developer - Associate Sample Questions (Q605-Q610):

NEW QUESTION # 605
A banking company is building an application for users to create accounts, view balances, and review recent transactions. The company integrated an Amazon API Gateway REST API with AWS Lambda functions. The company wants to deploy a new version of a Lambda function that gives customers the ability to view their balances. The new version of the function displays customer transaction insights. The company wants to test the new version with a small group of users before deciding whether to make the feature available for all users. Which solution will meet these requirements with the LEAST disruption to users?

  • A. Deploy the new version of the function to a new stage in the REST API. Route traffic to the new stage. If the new version fails, route traffic to the original stage.
  • B. Create a canary deployment for the REST API. Gradually increase traffic to the new version of the function. Revert traffic to the old version if issues are detected.
  • C. Redeploy the REST API stage to use the new version of the function. If issues are detected, update the REST API to point to the previous version of the function.
  • D. Create a new REST API stage for the new version of the function. Create a weighted alias record set in Amazon Route 53 to distribute traffic between the original stage and the new stage.

Answer: B

Explanation:
API Gateway's canary deployments allow gradual traffic shifting to a new version of a function, minimizing disruption while testing.
Why Option A is Correct:
Gradual Rollout: Reduces risk by incrementally increasing traffic.
Rollback Support: Canary deployments make it easy to revert to the previous version.
Why Not Other Options:
Option B: Redeploying the stage disrupts all users.
Option C & D: Managing new stages and weighted routing introduces unnecessary complexity.
Reference:
Canary Deployments in API Gateway


NEW QUESTION # 606
A developer is creating a template that uses AWS CloudFormation to deploy an application. The application is serverless and uses Amazon API Gateway, Amazon DynamoDB, and AWS Lambda. Which AWS service or tool should the developer use to define serverless resources in YAML?

  • A. AWS Serverless Application Model (AWS SAM)
  • B. AWS Elastic Beanstalk
  • C. CloudFormation serverless intrinsic functions
  • D. AWS Cloud Development Kit (AWS CDK)

Answer: A

Explanation:
The AWS Serverless Application Model(SAM) is an open-source framework for building serverless applications. It provides shorthand syntax to express functions, APIs, databases, and event source mappings. With just a few lines per resource, you can define the application you want and model it using YAML.
https://aws.amazon.com/serverless/sam/


NEW QUESTION # 607
A company has an application that is hosted on Amazon EC2 instances. The application stores objects in an Amazon S3 bucket and allows users to download objects from the S3 bucket. A developer turns on S3 Block Public Access for the S3 bucket. After this change, users report errors when they attempt to download objects. The developer needs to implement a solution so that only users who are signed in to the application can access objects in the S3 bucket.
Which combination of steps will meet these requirements in the MOST secure way? (Choose two.)

  • A. Create an IAM user with an appropriate policy. Store the access key ID and secret access key on the EC2 instances.
  • B. Create an EC2 instance profile and role with an appropriate policy. Associate the role with the EC2 instances.
  • C. Modify the application to use the S3 GeneratePresignedUrl API call.
  • D. Modify the application to delegate requests to the S3 bucket.
  • E. Modify the application to use the S3 GetObject API call and to return the object handle to the user.

Answer: B,D


NEW QUESTION # 608
A developer is migrating an application to Amazon Elastic Kubernetes Service (Amazon EKS).
The developer migrates the application to Amazon Elastic Container Registry (Amazon ECR) with an EKS cluster. As part of the application migration to a new backend, the developer creates a new AWS account. The developer makes configuration changes to the application to point the application to the new AWS account and to use new backend resources. The developer successfully tests the changes within the application by deploying the pipeline.
The Docker image build and the pipeline deployment are successful, but the application is still connecting to the old backend. The developer finds that the application's configuration is still referencing the original EKS cluster and not referencing the new backend resources.
Which reason can explain why the application is not connecting to the new resources?

  • A. The developer added a new tag to the Docker image.
  • B. The developer did not update the Docker image tag to a new version.
  • C. The developer pushed the changes to a new Docker image tag.
  • D. The developer did not successfully create the new AWS account.

Answer: B


NEW QUESTION # 609
A company is developing a serverless application by using AWS Lambda functions. One of the Lambda functions needs to access an Amazon RDS DB instance. The DB instance is in a private subnet inside a VPC.
The company creates a role that includes the necessary permissions to access the DB instance. The company then assigns the role to the Lambda function. A developer must take additional action to give the Lambda function access to the DB instance.
What should the developer do to meet these requirements?

  • A. Configure the Lambda function to connect to the private subnets in the VPC. Add security group rules to allow traffic to the DB instance from the Lambda function.
  • B. Assign a public IP address to the DB instance. Modify the security group of the DB instance to allow inbound traffic from the IP address of the Lambda function.
  • C. Set up an AWS Direct Connect connection between the Lambda function and the DB instance.
  • D. Configure an Amazon CloudFront distribution to create a secure connection between the Lambda function and the DB instance.

Answer: A


NEW QUESTION # 610
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