Amazon Web Services udemy selected Dva-c02 Aws Certified Associate Questions Answers by Ilyas q59 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:	608 Q&A's	Shared By:	ilyas

Question 168

A developer is using AWS CodeDeploy to launch an application onto Amazon EC2 instances. The application deployment fails during testing. The developer notices an IAM_ROLE_PERMISSIONS error code in Amazon CloudWatch logs.

What should the developer do to resolve the error?

Options:

Ensure that the deployment group is using the correct role name for the CodeDeploy service role.

Attach the AWSCodeDeployRoleECS policy to the CodeDeploy service role.

Attach the AWSCodeDeployRole policy to the CodeDeploy service role.

Ensure the CodeDeploy agent is installed and running on all instances in the deployment group.

Discussion

Question 169

A company built an application on a SQL database. The company then migrated the application to Amazon DynamoDB. The company needs to ensure that the application supports infinite scrolling for a news feed that displays user-generated posts. The application previously relied on numeric page-based pagination. The application must now rely on cursor-based pagination in DynamoDB.

Which solution will meet these requirements in the MOST operationally efficient way?

Options:

Use the LastEvaluatedKey value returned from each DynamoDB query as the ExclusiveStartKey value in subsequent queries.

Perform a full table scan to calculate page offsets before returning results.

Retrieve all news feed items from DynamoDB in a single query. Paginate entirely on the client side.

Store the page numbers directly in DynamoDB items. Query based on the page numbers to retrieve paginated results.

Discussion

Question 170

A company requires that all applications running on Amazon EC2 use 1AM roles to gam access to AWS services. A developer is modifying an application that currently relies on 1AM user access keys stored in environment variables to access Amazon DynamoDB tables using boto, the AWS SDK for Python.

The developer associated a role with the same permissions as the 1AM user to the EC2 instance, then deleted the 1AM user. When the application was restarted, the AWS

Access Denied Exception messages started appearing in the application logs. The developer was able to use their personal account on the server to run DynamoDB API commands using the AWS CLI.

What is the MOST likely cause of the exception?

Options:

1AM policies might take a few minutes to propagate to resources.

Disabled environment variable credentials are still being used by the application.

The AWS SDK does not support credentials obtained using an instance role.

The instance ' s security group does not allow access to http://169.254.169.254.

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Question 171

A company runs a critical application on AWS. The application uses credentials to access an Amazon RDS database.

As part of a risk assessment to analyze security vulnerabilities, the company found that database credentials are not frequently rotated. A developer needs to implement a solution that securely stores and rotates the credentials. The solution must not expose the credentials to anyone who should not have access to the credentials.

Which solution will meet these requirements?

Options:

Configure AWS Secrets Manager to store the database credentials. Schedule managed rotation for Secrets Manager secrets.

Configure the Systems Manager parameters with an AWS KMS AWS managed key to encrypt the database credentials at rest. Create an AWS Lambda function to rotate the KMS key. Set up an Amazon EventBridge rule to invoke the Lambda function on a schedule.

Configure an Amazon S3 bucket with S3 Bucket Keys for server-side encryption with AWS KMS keys (SSE-KMS) to store the database credentials.

Configure the Systems Manager parameters with an AWS KMS customer managed key to encrypt the database credentials at rest. Create an AWS Lambda function to periodically rotate the KMS key. Use a cron expression to invoke the Lambda function on a schedule.