Web Development with Node.JS and MongoDB (Video 10)

This video tutorial covers file systems in Node.js, focusing on how to manipulate files and directories using the file system module. It explains the difference between synchronous and asynchronous methods, and when to use each. The tutorial also discusses streams for file operations, file watching, and directory management. Finally, it introduces the next topic, Express.js, a Node.js web application framework.

What is the primary purpose of the file system module in Node.js?

• To create user interfaces

• To manipulate files and directories

• To handle HTTP requests

• To manage network connections

When should you use synchronous methods in Node.js file operations?

• When the operation must succeed before continuing

• When performance is not a concern

• When handling large files

• When the application can function without them

What is a key characteristic of asynchronous methods in Node.js?

• They do not require callbacks

• They throw exceptions immediately

• They use callbacks for handling results

• They block the execution of code

How can you copy a file using streams in Node.js?

• By using the copyFile method

• By creating read and write streams and piping them

• By using the clone method

• By using the duplicate method

What does the 'persistent' option do when watching files in Node.js?

• It continues watching files after changes

• It stops the script after the first change

• It watches files only once

• It only watches for file deletions

Which method is used to create a new directory in Node.js?

• createDir

• addDir

• newDir

• mkdir

What should you do to ensure subdirectories are watched in Node.js?

• Use the 'deepWatch' method

• Enable 'subDirWatch' in settings

• Set the 'recursive' option to true

• Set 'watchAll' to true