Free Practice Questions AWS Certified Developer Associate

Free AWS Developer – Associate practice questions to help you prepare for the certification exam. These questions cover the core AWS development, deployment, and service integration topics you need to pass. Designed to match real exam topics, they give you a clear idea of what to expect. Use them to test your knowledge and find areas for improvement. Build your confidence before taking the actual exam.
Ready to see how much you know? Try these AWS Developer Associate practice questions to check your understanding of key AWS development topics.
Which AWS service lets you run code in response to events without managing servers?

AWS Lambda lets you upload code and have it run automatically when triggered by events (like an S3 file upload, a DynamoDB table update, or an API Gateway request). You don’t have to provision or manage servers, and you pay only for the time your code runs, measured in milliseconds.

Amazon DynamoDB is a fully managed NoSQL database that scales automatically to handle millions of requests per second. Key features include low-latency reads and writes, automatic scaling, global tables for multi-Region replication, built-in security, backup and restore, and an optional in-memory cache (DAX) for even faster performance.

AWS SDKs (Software Development Kits) provide language-specific libraries (for Python, JavaScript, Java, etc.) that make it easier for developers to interact with AWS services. Instead of writing raw HTTP requests, you use familiar programming patterns, handle retries automatically, and integrate authentication securely. SDKs save time and reduce complexity.

Amazon SNS (Simple Notification Service) is a pub/sub messaging system, while SQS (Simple Queue Service) is a message queue. You can use SNS to publish a message to multiple subscribers at once. One of those subscribers can be an SQS queue, which holds messages until workers are ready to process them. Together, they support fan-out messaging patterns, decouple systems, and improve reliability.

With synchronous invocation, the caller waits for the Lambda function to finish and returns the response (e.g., API Gateway). With asynchronous invocation, the event is queued, and Lambda processes it in the background; the caller doesn’t wait for completion (e.g., S3 events). Choosing between them depends on whether you need an immediate response or can process later.

With synchronous invocation, the caller waits for the Lambda function to finish and returns the response (e.g., API Gateway). With asynchronous invocation, the event is queued, and Lambda processes it in the background; the caller doesn’t wait for completion (e.g., S3 events). Choosing between them depends on whether you need an immediate response or can process later.

AWS CloudFormation lets you define your AWS infrastructure as code using JSON or YAML templates. You can version-control these templates, deploy complete environments automatically, and ensure consistent, repeatable setups across development, testing, and production. This reduces manual errors and speeds up deployment.

Amazon API Gateway is a fully managed service that lets you create, publish, monitor, and secure RESTful or WebSocket APIs. You can connect APIs to Lambda functions or other backend services, control access with IAM or custom authorizers, enable caching, throttle requests, and monitor usage. It handles heavy traffic and scales automatically.

AWS CodePipeline, often used with CodeCommit, CodeBuild, and CodeDeploy, automates the software release process. CodePipeline models your release workflow, runs tests, and deploys applications automatically when changes are made. This supports continuous integration (CI) and continuous delivery (CD) best practices.

IAM roles grant temporary, limited permissions to AWS services. Instead of embedding access keys into code, an EC2 instance or Lambda function can assume a role with specific permissions (e.g., read from S3, write to DynamoDB). This improves security by following the principle of least privilege and avoiding hardcoded credentials.

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