Which of the following code print the total free memory of operating system? 

Select valid stream instances:

How can you access the command line arguments passed to your program?

Which of the following is the correct way to get a normalized path? 

What is the output in console of this code? var events = require('events'); var myEventEmitter = new events.EventEmitter(); myEventEmitter.once('a', function () { console.log('a')}); myEventEmitter.on('b', function () { console.log('b')}); myEventEmitter.emit('a'); myEventEmitter.emit('b'); myEventEmitter.emit('a'); myEventEmitter.emit('b');

What is the output when the following code is executed? var http = require('http'); var server = http.createServer(function(req, res) { res.writeHead(200, {'Content-Type': 'text/html'}); res.end(` Testing Response! ${req.url} ${req.method} `); }); server.listen(3000); console.log('Server listening on port 3000');

Which of the following is the result of module.id ?

Which of the following timers methods exists in Node.js?

Which of the following variables you can use in modules?

Which of the following classes is the parent for repl.REPLServer class?

Which of the following provides in-built events?