DVA-C02 (Page 11)

A company is migrating an on-premises database to Amazon RDS for MySQL.The company has read-heavy workloads.The company wants to refactor the code to achieve optimum read performance for queries.Which solution will meet this requirement with LEAST current and future effort?Read More →

An IAM role is attached to an Amazon EC2 instance that explicitly denies access to all Amazon S3 API actions.The EC2 instance credentials file specifies the IAM access key and secret access key, which allow full administrative access.Given that multiple modes of IAM access are present for this EC2 instance, which of the following is correct?Read More →

A company is using AWS CloudFormation templates to deploy AWS resources.The company needs to update one of its AWS CloudFormation stacks.What can the company do to find out how the changes will impact the resources that are running?Read More →

A company uses AWS CloudFormation templates to manage infrastructure for a public-facing application in its development, pre-production, and production environments.The company needs to scale for increasing customer demand.A developer must upgrade the Amazon RDS DB instance type to a larger instance.The developer deploys an update to the CloudFormation stack with the instance size change in the pre-production environment.The developer notices that the stack is in an UPDATE_ROLLBACK_FAILED slate in CloudFormation.Which option is the cause of this issue?Read More →

A developer is storing many objects in a single Amazon S3 bucket.The developer needs to optimize the S3 bucket for high request rates.How should the developer store the objects to meet this requirement?Read More →

A developer is writing an application to analyze the traffic to a fleet of Amazon EC2 instances.The EC2 instances run behind a public Application Load Balancer (ALB).An HTTP server runs on each of the EC2 instances, logging all requests to a log file.The developer wants to capture the client public IP addresses.The developer analyzes the log files and notices only the IP address of the ALB.What must the developer do to capture the client public IP addresses in the log file?Read More →

A developer uses AWS IAM Identity Center (AWS Single Sign-On) to interact with the AWS CLI and AWS SDKs on a local workstation.API calls to AWS services were working when the SSO access was first configured.However, the developer is now receiving Access Denied errors.The developer has not changed any configuration files or scripts that were previously working on the workstation.What is the MOST likely cause of the developer’s access issue?Read More →

A developer is investigating an issue in part of a company’s application.In the application, messages are sent to an Amazon Simple Queue Service (Amazon SQS) queue.The AWS Lambda function polls messages from the SQS queue and sends email messages by using Amazon Simple Email Service (Amazon SES).Users have been receiving duplicate email messages during periods of high traffic.Which reasons could explain the duplicate email messages? (Choose two.)Read More →

A company wants to migrate applications from its on-premises servers to AWS.As a first step, the company is modifying and migrating a non-critical application to a single Amazon EC2 instance.The application will store information in an Amazon S3 bucket.The company needs to follow security best practices when deploying the application on AWS.Which approach should the company take to allow the application to interact with Amazon S3?Read More →

A developer is troubleshooting an application in an integration environment.In the application, an Amazon Simple Queue Service (Amazon SQS) queue consumes messages and then an AWS Lambda function processes the messages.The Lambda function transforms the messages and makes an API call to a third-party service.There has been an increase in application usage.The third-party API frequently returns an HTTP 429 Too Many Requests error message.The error message prevents a significant number of messages from being processed successfully.How can the developer resolve this issue?Read More →