NodeJs

Question 1

is a runtime environment that allows you to execute JavaScript code on the server side.

Answer 1

Node.js

Question 2

Non-blocking I/O operations make it efficient for handling multiple request simultaneously

Answer 2

Asynchronous and Event-Driven

Question 3

Uses single-threaded event loop but can handle many connections concurrently through callbacks, promises, or async/await.

Answer 3

Single-Threaded but Scalable

Question 4

NPM (Node Package Manager) provides a vast library of packages and modules

Answer 4

Rich Ecosystem

Question 5

Runs a various operating systems like Windows, Linux, and macOS

Answer 5

Cross-Platform

Question 6

Built on the V8 engine, which compiles JavaScript to machine code.

Answer 6

Fast Performance

Question 7

var http = require(‘whathere’);

Answer 7

var http = require(‘http’);

Question 8

http.createServer(whathere (req, res)){

Answer 8

http.createServer(function(req,res)){

Question 9

res.writeHead(200, {‘whathere’: ‘text/html’});

Answer 9

res.writeHead(200){‘Content-Type’: ‘text/html’});

Question 10

res.end(‘hello world!’);
}).listen(whathere);

Answer 10

res.end(‘hello world!’);
}).isten(8080);

Question 11

var http = require(‘http’);
http.createServer(function (req, res){

res.writeHead(200, {‘Content-Type’: ‘text/html’});
res.end(‘Hello World’);
}

).listen(8080);