Developer Associate (Page 18)

A developer is building an application integrating an Amazon API Gateway with an AWS Lambda function.When calling the API, the developer receives the following error:Wed Nov 08 01:13:00 UTC 2017 : Method completed with status: 502What should the developer do to resolve the error?Read More →

A developer deploys a custom application to three Amazon EC2 instances.The application processes messages from an Amazon Simple Queue Service (Amazon SQS) standard queue with default settings.When the developer runs a load test on the Amazon SQS queue, the developer discovers that the application processes many messages multiple times.How can the developer ensure that the application processes each message exactly once?Read More →

A developer has a legacy application that is hosted on-premises.Other applications hosted on AWS depend on the on-premises application for proper functioning.In case of any application errors, the developer wants to be able to use Amazon CloudWatch to monitor and troubleshoot all applications from one place.How can the developer accomplish this?Read More →

A company has a new application.The company needs to secure sensitive configuration data such as database connection strings, application license codes, and API keys that the application uses to access external resources.The company must track access to the configuration data for auditing purposes.The resources are managed outside the application.The company is not required to manage rotation of the connection strings, license codes, and API keys in the application.The company must implement a solution to securely store the configuration data and to give the application access to the configuration data.The solution must comply with security best practices.Which solution will meet these requirements MOST cost-effectively?Read More →

A developer is migrating some features from a legacy monolithic application to use AWS Lambda functions instead.The application currently stores data in an Amazon Aurora DB cluster that runs in private subnets in a VPC.The AWS account has one VPC deployed.The Lambda functions and the DB cluster are deployed in the same AWS Region in the same AWS account.The developer needs to ensure that the Lambda functions can securely access the DB cluster without crossing the public internet.Which solution will meet these requirements?Read More →

A company hosts a client-side web application for one of its subsidiaries on Amazon S3.The web application can be accessed through Amazon CloudFront from https://www.example.com.After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets.To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications.However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts.What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?Read More →

An AWS Lambda function is invoked asynchronously to process events.Occasionally, the Lambda function falls to process events.A developer needs to collect and analyze these failed events to fix the issue.What should the developer do to meet these requirements with the LEAST development effort?Read More →

A business intelligence application runs on Amazon Elastic Container Service (Amazon ECS) on AWS Fargate.Application-level audits require a searchable log of all API calls from users to the application.The application’s developers must store the logs centrally on AWS.Which solution will meet these requirements?Read More →

A company is running a custom application on a set of on-premises Linux servers that are accessed using Amazon API Gateway.AWS X-Ray tracing has been enabled on the API test stage.How can a developer enable X-Ray tracing on the on-premises servers with the LEAST amount of configuration?Read More →

A developer is creating an AWS Lambda function to process streaming data from an Amazon Kinesis data stream.When the Lambda function parses the data and encounters a malformed record from the stream, the Lambda function exits with an error.The developer is observing duplicate records downstream from the function.When the developer uses a different client to examine the Kinesis data stream output, no duplicate records are visible in the stream.What is the reason for the duplicate records?Read More →