Top 25 Nodejs interview questions

1. What is Node.js and why is it important?
2. What are the main features of Node.js?
3. How is Node.js different from other JavaScript runtime environments?
4. What are the key concepts of event-driven programming in Node.js?
5. What is the difference between synchronous and asynchronous code in Node.js?
6. How do you use the Node.js package manager (npm)?
7. What is the purpose of the "require" function in Node.js?
8. How do you use the "module.exports" and "exports" objects in Node.js?
9. How do you create a web server in Node.js?
10. What is the purpose of the "Buffer" class in Node.js?
11. How do you use streams in Node.js?
12. What is the difference between the "process.nextTick()" and "setImmediate()" functions in Node.js?
13. How do you use the "EventEmitter" class in Node.js?
14. What is the difference between the "fs.readFile()" and "fs.readFileSync()" functions in Node.js?
15. How do you use the "child_process" module in Node.js?
16. What is the difference between the "global" and "process" objects in Node.js?
17. How do you use the "cluster" module in Node.js?
18. What is the purpose of the "os" module in Node.js?
19. How do you use the "url" module in Node.js?
20. What is the purpose of the "querystring" module in Node.js?
21. How do you use the "http" module in Node.js?
22. What is the difference between the "http" and "https" modules in Node.js?
23. How do you use the "path" module in Node.js?
24. What is the difference between the "path" and "url" modules in Node.js?
25. How do you use the "util" module in Node.js?

Top 25 Nodejs interview questions