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Associate Certified Developer - Associate Flashcards

7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Associate Certified Developer - Associate flashcards as text

  1. A developer stores session data in ElastiCache Redis. The application needs to handle Redis connection failures gracefully. What is the recommended pattern?

    Answer: Implement circuit breaker with fallback to stateless processing

    A circuit breaker pattern detects failures and falls back gracefully, preventing cascading failures while maintaining availability.

  2. Which AWS service should a developer use to automatically rotate database credentials without modifying application code?

    Answer: AWS Secrets Manager

    AWS Secrets Manager natively integrates with RDS, Redshift, and DocumentDB to automatically rotate credentials on a schedule.

  3. A CloudFormation stack deployment fails midway. What happens to previously created resources by default?

    Answer: They are retained and the stack enters ROLLBACK_COMPLETE state

    By default, CloudFormation rolls back all changes on failure, deleting resources created during the failed deployment and entering ROLLBACK_COMPLETE.

  4. A developer needs to trigger a Lambda function whenever an item is modified in a DynamoDB table. What should they enable?

    Answer: DynamoDB Streams

    DynamoDB Streams captures item-level changes and can trigger Lambda functions to process each change record.

  5. An API Gateway REST API must only be accessible from within a VPC. Which endpoint type should be configured?

    Answer: Private endpoint

    Private API Gateway endpoints are accessible only from within a VPC using a VPC endpoint (PrivateLink), blocking public internet access.

  6. A developer notices a Lambda function's cold start latency is too high. Which strategy MOST directly reduces cold start duration?

    Answer: Enable provisioned concurrency

    Provisioned concurrency pre-initializes execution environments, eliminating cold start latency for the configured number of instances.

  7. When using AWS X-Ray to trace a distributed application, what does a segment represent?

    Answer: Work done by a single service or application for a request

    An X-Ray segment records data about work done by a single service, including timing, HTTP data, and any subsegments for downstream calls.