Developer Associate (Page 51)

A company requires that all applications running on Amazon EC2 use IAM roles to gain access to AWS services.A developer is modifying an application that currently relies on IAM user access keys stored in environment variables to access Amazon DynamoDB tables using boto, the AWS SDK for Python.The developer associated a role with the same permissions as the IAM user to the EC2 instance, then deleted the IAM user.When the application was restarted, the AWS AccessDeniedException messages started appearing in the application logs.The developer was able to use their personal account on the server to run DynamoDB API commands using the AWS CLI.What is the MOST likely cause of the exception?Read More →

A company has three different environments: Development.QA, and Production.The company wants to deploy its code first in the Development environment, then QA, and then Production.Which AWS service can be used to meet this requirement?Read More →

A developer has AWS Lambda functions that need to access a company’s internal data science libraries and reference data.Separate teams manage the libraries and the data.The teams must be able to update and upload new data independently.The Lambda functions are connected to the company’s central VPC.Which solution will provide the Lambda functions with access to the libraries and data?Read More →

A developer is using an AWS CodePipeline pipeline to provide continuous integration and continuous delivery (CI/CD) support for a Java application.The developer needs to update the pipeline to support the introduction of a new application dependency .jar file.The pipeline must start a build when a new version of the .jar file becomes available.Which solution will meet these requirements?Read More →

A company needs to set up secure database credentials for all its AWS Cloud resources.The company’s resources include Amazon RDS DB instances, Amazon DocumentDB clusters, and Amazon Aurora DB instances.The company’s security policy mandates that database credentials be encrypted at rest and rotated at a regular interval.Which solution will meet these requirements MOST securely?Read More →

A developer is writing a new serverless application for a company.Several other developers must collaborate on the code for this application, and the company expects frequent changes to the code.The developer needs to deploy the code from source control to AWS Lambda with the fewest number of manual steps.Which strategy for the build and deployment should the developer use to meet these requirements?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 →

Two containerized microservices are hosted on Amazon EC2 ECS.The first microservice reads an Amazon RDS Aurora database instance, and the second microservice reads an Amazon DynamoDB table.How can each microservice be granted the minimum privileges?Read More →

A developer has an application that uses WebSocket APIs in Amazon API Gateway.The developer wants to use an API Gateway Lambda authorizer to control access to the application.The developer needs to add credential caching and reduce repeated usage of secret keys and authorization tokens on every request.Which combination of steps should the developer take to meet these requirements? (Choose two.)Read More →

A developer is writing a web application that allows users to sign in.The application will run on Amazon EC2 instances behind an Application Load Balancer (ALB).The instances will run in an Auto Scaling group across multiple Availability Zones.How can the developer ensure that users stay signed in when the Auto Scaling group is scaled down?Read More →