Environment Variables MCQ | Node.js dotenv Multiple Choice Questions

Direction: Choose the correct option

How do you access environment variables in Node.js?

A. os.env.VAR_NAME

B. global.env.VAR_NAME

C. process.env.VAR_NAME

D. env.VAR_NAME

Direction: Choose the correct option

What is a common library for loading environment variables from a `.env` file?

A. config

B. dotenv

C. dotenv-safe

D. env-loader

Direction: Choose the correct option

Why are environment variables important in development?

A. To configure the app per environment

B. To follow best practices

C. All of the above

D. To keep sensitive data out of code

Direction: Choose the correct option

What does `require('dotenv').config()` do?

A. Loads variables from `.env` into `process.env`

B. Deletes environment variables

C. Creates a `.env` file

D. Logs all variables

Direction: Choose the correct option

Should `.env` files be committed to version control?

A. Yes, for everyone to see

B. Only the example file

C. Both B and C

D. No, they contain sensitive data

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