The Complete Practical Docker Guide - Challenge Solution: Create Files Handling Node App

This video tutorial guides viewers through creating a Node.js application and running it in a Docker container. It covers setting up a project in Visual Studio Code, using built-in Node.js modules like FS and Readline for file operations, and executing the application within a Docker environment. The tutorial emphasizes asynchronous programming in Node.js and demonstrates testing and verifying the application by creating and reading text files.

What is the purpose of using 'rm -rf' in the initial setup?

• To rename a directory

• To copy a directory

• To create a new directory

• To remove a directory and its contents

Why is 'index.js' commonly used as a file name in Node.js projects?

• It automatically installs Node.js modules

• It is the default entry point for Node.js applications

• It is the only file name allowed by Node.js

• It is required for Docker compatibility

Which Node.js module is used for handling file operations?

• fs

• http

• path

• os

What is the role of the 'readline' module in the application?

• To prompt user input and handle it

• To execute shell commands

• To manage network requests

• To read files from the system

Why is the 'writeFile' method preferred over 'writeFileSync' in this application?

• It uses less memory

• It is more secure

• It is faster

• It is asynchronous, aligning with Node.js's nature

What command is used to run the Node.js application inside a Docker container?

• docker run

• docker start

• docker build

• docker exec

What is the purpose of using template literals in the file writing process?

• To simplify error handling

• To enforce strict typing

• To allow variable interpolation in strings

• To improve performance