Nodejs Set 3

By changing the content-type from text/plain to text/html ✘ By changing the text-type from text/plain to text/html ✘ By changing the content-type from text/html to text/plain ✘ None of these ✔

3 ✘ 5 ✘ 4 ✘ 2 ✔

To approach the last expression ✘ To approach the fast expression ✘ To approach the middle expression ✘ To approach the first expression ✔

Node.js works on a V1 environment. ✘ Node.js works on a V8 environment. ✘ Node.js works on a V3 environment. ✘ Node.js works on a V7 environment. ✔

Linear and non linear ✘ Lazy and active ✘ Synchronous and asynchronous ✘ None of these ✔

var request = require('request'); request.post( 'http://www.google.com/action', { key: 'value' } , function (error, response, body) } } ); ✘ var request = require('request'); request.post( 'http://www.google.com/action', { form: { key: 'value' } }, function (error, response, body) { if (!error && response.statusCode == 200) { console.log(body) } } ); ✘ 'http://www.google.com/action', { form: { key: 'value' } }, function (error, response, body) { if (!error && response.statusCode == 200) { console.log(body) } } ✘ None of these ✔

It refers to heavily nested callbacks that become reliable. ✘ It refers to heavily nested callbacks that have become unreadable. ✘ It refers to heavily nested callbacks that are readable. ✘ None of these ✔

let trimmed = (l.trim() for (l in lines)); ✘ let trimmed = (trim(l)); ✘ let trimmed = l.trim(); ✘ let trimmed = for(l in lines)); ✔

function concatenate() { return String.prototype.concat('', arguments); } ✘ function concatenate() { return String.prototype.apply('', arguments); } ✘ function concatenate() { return String.concat.apply('', arguments); } ✘ function concatenate() { return String.prototype.concat.apply('', arguments); } ✔

It is evaluated as 0. ✘ It is evaluated as 1. ✘ It is evaluated as true. ✘ It is evaluated as false. ✔