7.10.1. Usage

Try these first

1. 1.

   What is an environment variable?

   Hint

   Think about what values your applications might need to run.

2. 2.

   What is the purpose of a .env file?

   Hint

   Consider how files can help manage projects.

3. 3.

   What is the purpose of using environment variables?

   • Store data permanently
   • Affect running process behavior
   • Replace version control systems

   Hint

   Think about what variables do once they're set.

4. 4.

   True or False: Environment variables can only be used for storing API keys.

   • True
   • False

   Hint

   Consider all the application settings that might vary.

5. 5.

   You have an application that needs to change its configuration based on environment. Describe how you would use environment variables to manage this.

   Hint

   Think of configurations that might change across development and production.

6. 6.

   Explain how omitting environment variables might lead to security breaches.

   Hint

   Reflect on the importance of securing sensitive data.