Basic Interview Questions List

1. What is Node.js? Explain its main features and advantages.

2. How does Node.js differ from traditional server-side platforms like Apache or Nginx?

3. What is npm? How is it used in Node.js development?

4. What is the purpose of the package.json file in a Node.js project?

5. Describe the role of modules in Node.js. How are they created and used?

6. What is the purpose of the **dirname and **filename variables in Node.js?

7. How do you install external dependencies in a Node.js project using npm?

8. Explain the concept of callback functions in Node.js. Provide an example.

9. What is the Node.js event loop? How does it work?

10. How can you handle errors in Node.js applications?

11. What is asynchronous programming in Node.js? Why is it important?

12. How do you read and write files in Node.js?

13. What is Express.js? How does it simplify building web applications with Node.js?

14. Explain the concept of middleware in Express.js.

15. Describe the role of the require function in Node.js.

16. How do you handle form data in an Express.js application?

17. What is the role of environment variables in Node.js development?