Node.js, often referred to as simply "Node," is a powerful open-source runtime environment that allows developers to execute JavaScript code outside of web browsers. It is designed for building scalable and efficient network applications, particularly on the server side. Node.js leverages a non-blocking, event-driven architecture, making it ideal for handling asynchronous operations and real-time applications. With its vast ecosystem of packages and modules available through npm (Node Package Manager), Node.js has become a popular choice for web development, microservices, APIs, and more, enabling developers to create high-performance applications with ease.
Show All Answers
Practice Test
241. Which Node.js module is commonly used for handling command-line arguments and options in CLI applications?
A. http
B. fs
C. yargs
D. express
Show Answer
Report This Question
Answer: yargs
242. In Node.js CLI development, what is the purpose of the process.argv property?
A. To store application data
B. To define project metadata
C. To access command-line arguments passed to the script
D. To manage server configurations
Show Answer
Report This Question
Answer: To access command-line arguments passed to the script
243. What is the role of the "commander" module in Node.js CLI development?
A. To create HTML templates
B. To manage database migrations
C. To provide an easy way to define and handle command-line commands and options
D. To build web applications
Show Answer
Report This Question
Answer: To provide an easy way to define and handle command-line commands and options
244. What is the primary benefit of using a library like "inquirer.js" in Node.js CLI development?
A. It automatically generates HTML templates for CLI interfaces.
B. It simplifies server-side rendering.
C. It allows developers to create interactive and user-friendly command-line prompts and menus.
D. It optimizes database queries.
Show Answer
Report This Question
Answer: It allows developers to create interactive and user-friendly command-line prompts and menus.
245. What is "chalk" in the context of Node.js CLI development, and how is it used?
A. A tool for database management
B. A library for working with asynchronous code
C. A package for handling HTTP requests
D. A library for adding colored text and styles to CLI output
Show Answer
Report This Question
Answer: A library for adding colored text and styles to CLI output
246. What does the term "TTY" stand for in the context of Node.js CLI development?
A. Test the Type Yourself
B. Teletype
C. Text-to-You
D. Terminal Type
Show Answer
Report This Question
Answer: Teletype
247. What is "stdin" in the context of Node.js CLI development?
A. A module for sending emails
B. A type of routing strategy
C. The standard input stream that allows data to be read from the command-line user
D. A method for creating HTML templates
Show Answer
Report This Question
Answer: The standard input stream that allows data to be read from the command-line user
248. In Node.js CLI development, how can you capture and handle user input from the command line?
A. By using the "localStorage" module
B. By using the "stdin" stream and event listeners
C. By querying the database directly
D. By defining input fields in a configuration file
Show Answer
Report This Question
Answer: By using the "stdin" stream and event listeners
249. What is the primary purpose of the "shelljs" module in Node.js CLI development?
A. To create HTML templates
B. To optimize database migrations
C. To provide a portable and cross-platform way to interact with the file system and shell commands in a CLI application
D. To manage server configurations
Show Answer
Report This Question
Answer: To provide a portable and cross-platform way to interact with the file system and shell commands in a CLI application
250. What is the purpose of following consistent coding conventions in Node.js development?
A. To make the code more complex
B. To improve code readability, maintainability, and collaboration among developers
C. To optimize database queries
D. To reduce the need for code testing
Show Answer
Report This Question
Answer: To improve code readability, maintainability, and collaboration among developers
