DVA-C02 (Page 34)

A development team maintains a web application by using a single AWS RDS, template.The template defines web servers and an Amazon RDS database.The team uses the CloudFormation template to deploy the CloudFormation stack to different environments.During a recent application deployment, a developer caused the primary development database to be dropped and recreated.The result of this incident was a loss of data.The team needs to avoid accidental database deletion in the future.Which solutions will meet these requirements? (Choose two.)Read More →

A company is using AWS CloudFormation to deploy a two-tier application.The application will use Amazon RDS as its backend database.The company wants a solution that will randomly generate the database password during deployment.The solution also must automatically rotate the database password without requiring changes to the application.What is the MOST operationally efficient solution that meets these requirements?Read More →

A developer is troubleshooting an Amazon API Gateway API.Clients are receiving HTTP 400 response errors when the clients try to access an endpoint of the API.How can the developer determine the cause of these errors?Read More →

A developer is working on a Python application that runs on Amazon EC2 instances.The developer wants to enable tracing of application requests to debug performance issues in the code.Which combination of actions should the developer take to achieve this goal? (Choose two.)Read More →

A company is building an application for stock trading.The application needs sub-millisecond latency for processing trade requests.The company uses Amazon DynamoDB to store all the trading data that is used to process each trading request.A development team performs load testing on the application and finds that the data retrieval time is higher than expected.The development team needs a solution that reduces the data retrieval time with the least possible effort.Which solution meets these requirements?Read More →

When a developer tries to run an AWS CodeBuild project, it raises an error because the length of all environment variables exceeds the limit for the combined maximum of characters.What is the recommended solution?Read More →

A developer is modifying an existing AWS Lambda function.While checking the code, the developer notices hardcoded parameter values for an Amazon RDS for SQL Server user name, password, database, host, and port.There are also hardcoded parameter values for an Amazon DynamoDB table, an Amazon S3 bucket, and an Amazon Simple Notification Service (Amazon SNS) topic.The developer wants to securely store the parameter values outside the code in an encrypted format and wants to turn on rotation for the credentials.The developer also wants to be able to reuse the parameter values from other applications and to update the parameter values without modifying code.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A mobile app stores blog posts in an Amazon DynamoDB table.Millions of posts are added every day, and each post represents a single item in the table.The mobile app requires only recent posts.Any post that is older than 48 hours can be removed.What is the MOST cost-effective way to delete posts that are older than 48 hours?Read More →

A developer has an application that is composed of many different AWS Lambda functions.The Lambda functions all use some of the same dependencies.To avoid security issues, the developer is constantly updating the dependencies of all of the Lambda functions.The result is duplicated effort for each function.How can the developer keep the dependencies of the Lambda functions up to date with the LEAST additional complexity?Read More →

A company is using Amazon RDS as the backend database for its application.After a recent marketing campaign, a surge of read requests to the database increased the latency of data retrieval from the database.The company has decided to implement a caching layer in front of the database.The cached content must be encrypted and must be highly available.Which solution will meet these requirements?Read More →