Developer Associate (Page 43)

A company created an application to consume and process data.The application uses Amazon Simple Queue Service (Amazon SQS) and AWS Lambda functions.The application is currently working as expected, but it occasionally receives several messages that it cannot process properly.The company needs to clear these messages to prevent the queue from becoming blocked.A developer must implement a solution that makes queue processing always operational.The solution must give the company the ability to defer the messages with errors and save these messages for further analysis.What is the MOST operationally efficient solution that meets these requirements?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 company has a multi-node Windows legacy application that runs on premises.The application uses a network shared folder as a centralized configuration repository to store configuration files in .xml format.The company is migrating the application to Amazon EC2 instances.As part of the migration to AWS, a developer must identify a solution that provides high availability for the repository.Which solution will meet this requirement MOST cost-effectively?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 →

An application running on multiple Amazon EC2 instances pulls messages from a standard Amazon SQS queue.A requirement for the application is that all messages must be encrypted at rest.Developers are instructed to use methods that allow for centralized key management and minimize possible support requirements whenever possible.Which of the following solutions supports these requirements?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 company has a two-tier application running on an Amazon EC2 server that handles all of its AWS based e-commerce activity.During peak times, the backend servers that process orders are overloaded with requests.This results in some orders failing to process.A developer needs to create a solution that will re-factor the application.Which steps will allow for more flexibility during peak times, while still remaining cost-effective? (Choose two.)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 developer has created an AWS Lambda function that is written in Python.The Lambda function reads data from objects in Amazon S3 and writes data to an Amazon DynamoDB table.The function is successfully invoked from an S3 event notification when an object is created.However, the function fails when it attempts to write to the DynamoDB table.What is the MOST likely cause of this issue?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 →