Free AWS Certified Developer - Associate Practice Test

A developer is building a serverless application using AWS Lambda. The Lambda function needs to retrieve database credentials securely without hardcoding them in the code. Which AWS service should the developer use to store and retrieve these credentials?

A development team is using AWS CodePipeline to automate their application deployment process. They want to add a manual approval step before deploying to production. What action should they add to their pipeline?

A developer needs to process messages from an Amazon SQS queue. The processing can take up to 5 minutes per message. What should the developer do to prevent the message from being processed multiple times?

A developer is deploying a containerized application to AWS. The application needs to scale automatically based on CPU utilization and handle variable traffic patterns. Which AWS service provides the simplest solution for this requirement?

A developer is troubleshooting an application that intermittently returns 5xx errors. The application uses an Application Load Balancer and EC2 instances. Which AWS service should the developer use to gain visibility into the HTTP requests and responses?

A company is developing a REST API using Amazon API Gateway and AWS Lambda. The API will be accessed by multiple third-party partners. Each partner should have different access permissions to specific API resources. What is the MOST secure and scalable approach to implement this requirement?

A developer is building a microservices application where one service needs to invoke another service asynchronously. The receiving service must process messages at least once, but duplicate processing should be minimized. Which combination of AWS services best meets these requirements?

A development team is using AWS CodeBuild to compile their application. The build process requires access to proprietary libraries stored in a private repository. How should the team securely provide these credentials to CodeBuild?

A Lambda function processes files uploaded to an S3 bucket. Recently, large files are causing the function to timeout. The function currently reads the entire file into memory, processes it, and stores the result in DynamoDB. What is the MOST cost-effective solution to handle larger files?

A developer is implementing a blue/green deployment strategy for an application running on EC2 instances behind an Application Load Balancer. Which AWS service simplifies this deployment pattern with built-in support?

An application stores user session data in Amazon ElastiCache for Redis. The development team wants to ensure that sessions persist even if a cache node fails. What configuration should they implement?

A developer needs to implement fine-grained access control for a DynamoDB table where users can only read and write their own items. Each item has a 'userId' attribute. What is the most efficient approach?

A company uses AWS CodeCommit for source control and wants to automatically trigger a Lambda function whenever code is pushed to the main branch. What is the recommended way to implement this?

A developer is experiencing high latency when retrieving items from a DynamoDB table. Analysis shows that the same items are frequently requested. What should the developer implement to reduce latency and costs?

A developer is building an application that needs to send emails to users. The application must handle email bounces and complaints. Which AWS service should be used, and what additional service helps track these events?

A development team is deploying a Lambda function that requires 50 external dependencies totaling 300 MB. The function is experiencing slow cold starts. What approach will MOST effectively reduce cold start times?

A company has a multi-tenant SaaS application using API Gateway and Lambda. They need to implement per-tenant throttling limits and usage tracking while maintaining a single API deployment. Some tenants require higher limits than others. What is the MOST scalable solution?

A development team is implementing a distributed tracing solution for their microservices architecture running on ECS Fargate. The solution must provide end-to-end request tracking across services with minimal code changes. Services communicate via REST APIs and SQS queues. What should they implement?

A company is migrating an application to AWS that requires encrypting sensitive data before storing it in DynamoDB. The encryption keys must be rotated automatically and all key usage must be audited. Different tables require different encryption keys. What is the MOST secure and manageable solution?

A development team is implementing a CI/CD pipeline using CodePipeline, CodeBuild, and CodeDeploy. They need to deploy to three environments (dev, staging, production) sequentially, with automated testing after dev, manual approval before production, and automatic rollback if production health checks fail. What pipeline configuration should they use?