AWS DevOps Engineer Professional Practice Test 2025 - Free DevOps Practice Questions and Certification Study Guide

Configuration files for Elastic Beanstalk extensions specifically utilize the .config extension. This is a requirement established by Elastic Beanstalk to define configurations for environments, including settings for software configurations, environment properties, and resource management. When you place a .config file in the .ebextensions directory of your application source bundle, Elastic Beanstalk processes it during the deployment phase, allowing you to customize and modify the environment settings to suit your application's needs.

The other file types listed—like .json, .yml, and .txt—do not align with Elastic Beanstalk's specifications for configuration settings. While .json and .yml are commonly used for various configuration files in AWS and other tools, they are not the designated format for Elastic Beanstalk extensions. Similarly, .txt files are plain text and do not serve the purpose of defining structured configurations that Elastic Beanstalk requires. This specificity helps streamline the deployment process and ensures that configuration settings are interpreted correctly by the platform.