Carefully study the following code snippet and answer the question that follows.

var exp = require('express');

var application1 = exp() .use(function (rq, rs){

console.log('Cookie Header:\n', rq.headers['cookie']);

rs.cookie('\n name', 'Node.js');

rs.end('Hello Express World');

}).listen(3000);

Which of the following code snippets should be added at the top of those files that use the mongodb module?

A module 'rimraf' is installed locally in a Node.js project. The following code snippet is supposed to delete a directory named testing2 from the same project however the code contains some errors identify which code lines contain an error. 1.var rim1 = require('rimraf'); 2.rimraf('./Testing2', function(error1)){ 3. if(error1) console.log('This is an error', error1); 4. else console.log('Directory deleted successfully'); 5.}

What output will be generated on the execution of the following lines of code? var path = require('path'); console.log(path.join('test1'. 'ltest2'. 'test3'));

The following code snippet when executed, should create a web server that serves the web page 'idx.html' from 'testing5' folder. However, the syntax of lines 3 and 4 are not correct. Select the correct replacements of lines 3 and 4 from the given answer options. 1. var exp = require ('express'); 2. var serveStatic = require ('serve-static'); 3. var app = express() 4. .use(serveStatic(dirname /testing5, {'index': ['idx.html']})) 5. .listen(3000);

What is the purpose of using URL hashes in Node.js?

If you create a collection by using the createCollection method with [safe : true] option, then which of the following types of behaviors will be observed?

Which of the following statements are true about the child_process module in Node.js?

Which of the following statements are true about the module.exports object in Node.js?

Which of the following will open a file, then read its contents one line at a time?

Which of the following will open a file, then read its contents one line at a time?

Which of the following will synchronously check if a file/directory exists?