Which code will return total system memory in bytes? os is included like this: const os = require('os'); 

Which of the following is true about writable stream?

What does the following line of code do? var http = require('http');

Which method of fs module is used to truncate a file?

How to convert from Buffer instance to string of base64? 

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

Which of the following statement is valid?

Which of the following code is valid to get a joint path?

Which of the following is operates asynchronous logic?

In express application you are handling the route '/user/:name'. How could you access the 'name' property?

Which of the following should not to use in NodeJS?