Commonly asked Node.js questions

-What is Node.js?

-What is the difference between Node.js and JavaScript?

-Is Node.js single-threaded?

-What kind of API function is supported by Node.js?

-What is a module in Node.js?

-What is npm and its advantages?

-What is middleware?

-How does Node.js handle concurrency despite being single-threaded?

-What is control flow in Node.js?

- What do you mean by the event loop in Node.js?

- What are the main disadvantages of Node.js?

- 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 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.

- What is callback hell?

- 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 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 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?