- What is Node.js?
- How Does Node.js work?
- What is the difference between Node.js and JavaScript?
- What is the difference between Node.js and ExpressJS?
- Difference between Frontend and backend?
- Is Node.js single-threaded?
- What kind of API function is supported by Node.js?
- What's module in Node.js?
- What is npm and its advantages?
- Explain callback?
- Is there any disadvantages to using Node.js?
- Explain CRUD operation  
- What is middleware?
- How does Node.js handle concurrency despite being single-threaded?
- What is the control flow in Node.js?


- What are the alternative backend technologies?
- Is Node.js better than with other?
- What do you mean by the event loop in Node.js?
- What are the main disadvantages of Node.js?
- What is the difference between asynchronous and synchronous functions?
- What is REPL in Node.js?
- How to import a module in Node.js?
- What is the difference between Node.js and AJAX?
- What is package.json in Node.js?
- What is the most popular Node.js framework used these days?
- What are promises ?
- Explain asynchronous and non-blocking APIs in Node.js?
- What is the buffer class in Node.js?
- Promises instead of callback? Is that better?
- What are commonly used libraries in Node.js?
- What is event-driven programming in Node.js?

- What is buffer in Node.js?
- What are streams in Node.js?
- Explain crypto module in Node.js.
- Explain the use of the timers module in Node.js.
- What is the difference between setImmediate() and process.nextTick() methods?
- What is the difference between setTimeout() and setImmediate() methods?
- What is the difference between spawn() and fork() methods?
- Explain the use of the passport module in Node.js.
- What is a fork in Node.js?
- What are the three methods to avoid callback hell?
- What is body-parser in Node.js?
- What is CORS in Node.js?
- Explain the tls module in Node.js.

- What is piping in Node.js?
- What is a cluster in Node.js?
- How to manage sessions in Node.js?
- Explain the types of streams in Node.js.
- How can we implement authentication and authorization in Node.js?
- Explain the packages used for file uploading in Node.js.
- How to handle database connections in Node.js?
- How to read command line arguments in Node.js?
- What are child processes in Node.js?