Node.js Concepts and Practices

This Node.js crash course covers the basics of Node.js, including its installation, setup, and usage. It explains the use of CommonJS and ES modules, the HTTP module for creating servers, and building APIs with middleware. The course also delves into core modules like FS, Path, OS, and URL, and explores the Crypto and Events modules for security and real-time applications.

What is Node.js primarily used for?

• Client-side animations

• Server-side and networking applications

• Mobile app development

• Database management

Which of the following is NOT a JavaScript runtime?

• Deno

• Bun.js

• Python

• Node.js

What is the purpose of the package.json file in a Node.js project?

• To compile JavaScript code

• To store HTML templates

• To configure the web server

• To manage project dependencies and scripts

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

• http.initServer()

• http.launchServer()

• http.createServer()

• http.startServer()

What is the purpose of a .gitignore file in a Node.js project?

• To list all the files that should be included in the repository

• To specify the files that should be ignored by the version control system

• To automatically install dependencies

• To define environment variables

How does nodemon enhance the development process in Node.js?

• By automatically restarting the server when file changes are detected

• By providing a graphical user interface

• By compiling TypeScript code

• By managing database connections

What is the role of middleware in a Node.js server?

• To compile JavaScript code

• To process incoming requests and outgoing responses

• To manage user authentication

• To handle database queries

What is the primary advantage of using asynchronous file operations in Node.js?

• They prevent blocking of the event loop.

• They are easier to write and understand.

• They are faster than synchronous operations.

• They do not require error handling.

Which method would you use to append data to an existing file in Node.js?

• fs.truncate

• fs.readFile

• fs.appendFile

• fs.writeFile

What does the 'path.join' method in Node.js do?

• It reads the contents of a file.

• It deletes a file.

• It creates a new directory.

• It combines path segments into a single path.