Developer Associate (Page 47)

A company has a three-tier application that is deployed in Amazon Elastic Container Service (Amazon ECS).The application is using an Amazon RDS for MySQL DB instance.The application performs more database reads than writes.During times of peak usage, the application’s performance degrades.When this performance degradation occurs, the DB instance’s ReadLatency metric in Amazon CloudWatch increases suddenly.How should a developer modify the application to improve performance?Read More →

A company is updating an application to move the backend of the application from Amazon EC2 instances to a serverless model.The application uses an Amazon RDS for MySQL DB instance and runs in a single VPC on AWS.The application and the DB instance are deployed in a private subnet in the VPC.The company needs to connect AWS Lambda functions to the DB instance.Which solution will meet these requirements?Read More →

A company is developing a publicly accessible single-page application.The application makes calls from a client web browser to backend services to provide a user interface to customers.The application depends on a third-party web service exposed as an HTTP API.The web client must provide an API key to the third-party web service by using the HTTP header as part of the HTTP request.The company’s API key must not be exposed to the users of the web application.Which solution will meet these requirements MOST cost-effectively?Read More →

A developer wants to use AWS Elastic Beanstalk to test a new version of an application in a test environment.Which deployment method offers the FASTEST deployment?Read More →

A developer is configuring an Amazon CloudFront distribution for a new application to provide encryption in transit.The application is running in the eu-west-1Region.The developer creates a new certificate in AWS Certificate Manager (ACM) in eu-west-1, but the certificate is not visible in the CloudFront distribution settings.What should the developer do to fix this problem?Read More →

A company is providing read access to objects in an Amazon S3 bucket for different customers.The company uses IAM permissions to restrict access to the S3 bucket.The customers can access only their own files.Due to a regulation requirement, the company needs to enforce encryption in transit for interactions with Amazon S3.Which solution will meet these requirements?Read More →

A developer is using Amazon CodeGuru Profiler.The developer has configured the application with the CodeGuru Profiler agent.However, when the application runs, the developer notices that a significant number of events are missing from the generated profile.How can the developer reduce the number of missed events in the profile?Read More →

A team is developing an application that is deployed on Amazon EC2 instances.During testing, the team receives an error.The EC2 instances are unable to access an Amazon S3 bucket.Which steps should the team take to troubleshoot this issue? (Choose two.)Read More →

An organization is storing large files in Amazon S3, and is writing a web application to display meta-data about the files to end-users.Based on the metadata a user selects an object to download.The organization needs a mechanism to index the files and provide single-digit millisecond latency retrieval for the metadata.What AWS service should be used to accomplish this?Read More →

A developer is working on an ecommerce website.The developer wants to review server logs without logging in to each of the application servers individually.The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available.How can the developer update the application to meet these requirements with MINIMUM changes?Read More →