DVA-C01 (Page 11)

A developer is designing a web application in which new users will use their email addresses to create accounts.Millions of users are expected to sign up.The application will store attributes for each user.Which AWS service or feature should the developer implement to meet these requirements?Read More →

A developer is building a new application that uses an Amazon DynamoDB table.The specification states that all items that are older than 48 hours must be removed.Which solution will meet this requirement?Read More →

A developer is writing an application in AWS Lambda.To simplify testing and deployments, the developer needs the database connection string to be easily changed without modifying the Lambda code.How can this requirement be met?Read More →

A company has an Amazon S3 bucket containing premier content that it intends to make available to only paid subscribers of its website.The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors.How can the company limit the ability to download a premier content file in the S3 bucket to paid subscribers only?Read More →

A developer must build a mobile application that allows users to read and write data from an Amazon DynamoDB table to store user state for each unique user.The solution needs to limit data access to allow users access only to their own data.Which solution below is the most secure?Read More →

A software engineer developed an AWS Lambda function in Node.js to do some CPU-intensive data processing.With the default settings, the Lambda function takes about 5 minutes to complete.Which approach should a developer take to increase the speed of completion?Read More →

In a move toward using microservices, a company’s management team has asked all development teams to build their services so that API requests depend only on that service’s data store.One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database.Both are using Amazon DynamoDB.What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?Read More →

A software company must ensure that documents that are uploaded by users are securely stored in Amazon S3.The documents must be encrypted at rest in Amazon S3.The company wants to avoid client-side encryption and does not want to manage the security infrastructure.In addition, the company wants control over the keys that are used for encryption at rest.Which solution for encryption keys should a developer use to meet these requirements?Read More →

A development team sets up a project’s file directory structure in AWS CodeCommit.The team plans to use AWS CodeBuild and AWS CodeDeploy.The team creates the necessary configuration files for CodeBuild and CodeDeploy.The team wants to name and place these files according to service defaults.Where should the team place the CodeBuild and CodeDeploy files?Read More →

A developer is writing an application that runs on Amazon EC2 instances in an Auto Scaling group The application data is stored in an Amazon DynamoDB table and records are constantly updated by all instances. An instance sometimes retrieves old data. The developer wants to correct this by making sure the reads are strongly consistent.How can the developer accomplish this?Read More →