Carefully read the following code:

1. var EventEmitter = require("events").EventEmitter;

2. var example = new EventEmitter();

3. example.on('data', function sample1(){});

4. example.on('data', function sample2(){});

5. console.log(???);

Which of the given options should replace ??? in line 5 of the above-given code snippet to obtain the following output? [ [Function: sample1], [Function: sample2] ]

In Node.js, which of the following functions is used by an Express app to accept the middleware?

What will be the output of the following code snippet? var x =[8, 12, 3]; x.push(5); x.unshift(1); console.log(x[0]);

In the following program of an asynchronous test, which line of code contains an error? Line 1: exportsaynchabc = function (abc)[ Line 2: setTimeout(function (){ Line 3: abc.equal(false, true); Line 4: abc.done(true. false); Line 5: } 1200); Line 6: };

A Node.js project consists of three files: app1.js, app2.js, and app3.js. The code snippets of each of these files are given below. If we execute app2.js, then what output will be obtained? app1.js module.exports = {value1: 'Hello'}app2.jsvar app1 = require('./app1');console.log('Initial value:',app1.value1);app1.value1 = 'World';var app3 = require('./app3');app3.jsvar app3 = require('./app2');console.log('Final value:', app3.value1);

In a Node.js application, the 'optimist' module is installed. If the following program is executed in a JavaScript file of this application, then what will be the output?var a1 = require('optimist').argv;delete a1['$0'];console.log(a1);

The Javascript used in node.js:

If an EventEmitter object emits an 'error' event and there is no listener for it, node will:

In Node.js, the result of an asynchronous function can be accessed how?

What is NOT a valid method to create a child process instance?

Node.js clusters are child processes that do NOT share server ports?