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NodeJS Basics

1/25 What is Node.js primarily used for?
- Front-end development
- Back-end development
- Graphic design
2/25 Which of the following is a core module in Node.js?
- Express
- fs
- Bootstrap
3/25 Which of the following is true about the process object in Node.js?
- It provides information about the current Node.js process
- It's only available in the browser environment
- It allows Node.js to communicate with the operating system's process management
- It is used to start a new Node.js process
4/25 How does Node.js handle child processes?
- It cannot create child processes
- Using the child_process module to execute other applications
- By forking the main Node.js process for each new child
- Through the use of web workers
5/25 Which of the following best describes the Node.js global object?
- An object that provides functions and variables that can be used anywhere in the application
- A global variable that stores user session data
- A module that needs to be imported before use
6/25 What is the primary use case for the Node.js crypto module?
- Performing cryptographic operations like hashing and encryption
- Generating random numbers
- Creating secure network connections
- Managing cryptocurrency transactions
7/25 What does the 'require' function do in Node.js?
- Loads a JavaScript library
- Imports a module
- Requests data from a web service
8/25 What is the purpose of the .env file in Node.js applications?
- To set environment variables
- To configure the Node.js runtime environment
- To store encrypted variables
9/25 What does the Node.js os module provide?
- Functions for interacting with the operating system
- Methods for online storage
- Utilities for network operations
- Information about the current operating system
10/25 How can you ensure that a function is executed after all callbacks have completed in Node.js?
- Using the async module's series method
- Using the Promise.all method
- By nesting callbacks
- Using the EventEmitter class
11/25 What is the use of the 'express' package in Node.js?
- Data encryption
- Web application framework
- File compression
12/25 How can you securely store sensitive data like passwords in Node.js applications?
- Using the crypto module for hashing and encryption
- Storing them in a .env file as plain text
- Using local storage for persistence
- Encrypting them with the fs module
13/25 In Node.js, how can you listen for and respond to uncaught exceptions?
- process.on('uncaughtException', function(err) {});
- try...catch on the global level
- window.onerror for Node.js applications
14/25 How can you access the query string parameters in an Express route?
- req.query
- req.params
- req.body
15/25 What does the 'nodemon' tool provide for Node.js development?
- Automatic restart of your Node.js application when file changes in the directory are detected
- A node version manager
- Monitoring of Node.js application performance
16/25 What is the output of 'console.log(1 + '2' + 3)' in Node.js?
- '123'
- 6
- '15'
17/25 Which module is used to create a web server in Node.js?
- http
- server
- net
18/25 Which function is used to read data from a readable stream in Node.js?
- stream.read()
- stream.getData()
- stream.fetch()
19/25 In Node.js, which of the following is true about environment variables?
- They can store application configuration separately from code
- They are accessible through the 'process.env' object
- They can only be set within the application code
20/25 What is the command to list installed packages in a Node.js project?
- npm list
- npm installed
- node list-packages
21/25 Which of the following is true for process.nextTick() in Node.js?
- It is used to defer the execution of a function until the next loop iteration
- It schedules a function to execute at the beginning of the next event loop
- It is the same as setting a timeout with zero milliseconds
22/25 What does the 'util.inspect()' method do in Node.js?
- Converts an object into a string representation
- Inspects the performance of a Node.js application
- Checks the usability of a module
23/25 Which Node.js method is used to execute a function after a specified number of milliseconds?
- setTimeout()
- nextTick()
- setInterval()
24/25 What is the difference between 'exports' and 'module.exports' in Node.js?
- 'exports' is a shorthand for 'module.exports'
- 'exports' can export multiple objects, functions, or values
- 'module.exports' can only export a single object, function, or value
25/25 Which method is an effective way to handle rejected promises in async/await syntax in Node.js?
- Using a try/catch block
- Using the .catch() method on each promise
- Using process.on('unhandledRejection', handler)
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