Developer Associate (Page 25)

An application adds a processing date to each transaction that it receives.The application writes each transaction to an Amazon DynamoDB table by using the PutItem operation.Each transaction has a unique ID (transactionID).Sometimes the application receives transactions more than once.A developer notices that duplicate transactions in DynamoDB have the latest processing date instead of the date when the transaction was first received.Duplicate records happen infrequently, and most of the transactions are unique.What is the MOST cost-effective solution that the developer can implement to ensure that PutItem does not update an existing record?Read More →

A company has an application that is hosted on Amazon EC2 instances.The application stores objects in an Amazon S3 bucket and allows users to download objects from the S3 bucket.A developer turns on S3 Block Public Access for the S3 bucket.After this change, users report errors when they attempt to download objects.The developer needs to implement a solution so that only users who are signed in to the application can access objects in the S3 bucket.Which combination of steps will meet these requirements in the MOST secure way? (Choose two.)Read More →

A developer is building a static, client-side rendered website that is powered by ReactJS.The code has no server-side generated components and does not need to run any programming languages on the server.However, the code serves static HTML, CSS, and JavaScript to the client on each request.The developer’s solution to host the website must maximize performance and cost-effectiveness.Which combination of AWS services or resources should the developer use to meet these requirements?Read More →

A company is preparing to migrate an application to the company’s first AWS environment.Before this migration, a developer is creating a proof-of-concept application to validate a model for building and deploying container-based applications on AWS.Which combination of steps should the developer take to deploy the containerized proof-of-concept application with the LEAST operational effort? (Choose two.)Read More →

A developer has written an application that runs on Amazon EC2 instances.The developer is adding functionality for the application to write objects to an Amazon S3 bucket.Which policy must the developer modify to allow the instances to write these objects?Read More →

When using the AWS Encryption SDK, how does the developer keep track of the data encryption keys used to encrypt data?Read More →

A developer uses the Amazon S3 ListObjectsV2 API call to retrieve and list object keys from an S3 bucket.The list can contain thousands of keys, and the retrieval often returns more than the max-keys maximum value.The code must handle any number of returned results.How can the developer modify the code to handle any number of returns?Read More →

A company has a website that displays a daily newsletter.When a user visits the website, an AWS Lambda function processes the browser’s request and queries the company’s on-premises database to obtain the current newsletter.The newsletters are stored in English.The Lambda function uses the Amazon Translate TranslateText API operation to translate the newsletters, and the translation is displayed to the user.Due to an increase in popularity, the website’s response time has slowed.The database is overloaded.The company cannot change the database and needs a solution that improves the response time of the Lambda function.Which solution meets these requirements?Read More →

A developer is using an AWS Key Management Service (AWS KMS) customer master key (CMK) with imported key material to encrypt data in Amazon S3.The developer accidentally deletes the key material of the CMK and is unable to decrypt the data.How can the developer decrypt the data that was encrypted by the CMK?Read More →

A developer is creating an application on Amazon Elastic Container Service (Amazon ECS).The developer needs to configure the application parameters.The developer must configure limits for the application’s maximum number of simultaneous connections and maximum number of transactions per second.The maximum number of connections and transactions can change in the future.The developer needs a solution that can automatically deploy these changes to the application, as needed, without causing downtime.Which solution will meet these requirements?Read More →