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NodeJS Basics

1/25 How do you install a package using npm?
- npm install package-name
- npm get package-name
- install npm package-name
2/25 What does the async/await syntax in Node.js provide?
- A way to execute SQL queries
- A cleaner syntax for working with promises
- Synchronous blocking operations
- Immediate execution of asynchronous code
3/25 Which of the following is used to create a RESTful web service in Node.js?
- The http module
- The fs module
- The url module
4/25 What is the main difference between npm and npx?
- npm is a package manager, while npx is a tool to execute packages
- npx is a JavaScript runtime, npm is not
- npm installs packages globally, while npx does not
- There is no difference; they are the same tool
5/25 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
6/25 Which Node.js module is used to work with file paths?
- fs
- path
- file
7/25 How can you capture command line arguments in a Node.js application?
- Using process.argv
- Using console.args
- Using process.arguments
8/25 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
9/25 What is the main advantage of using async/await in Node.js?
- It allows running synchronous operations
- It simplifies the syntax for working with promises, making asynchronous code easier to write and read
- It improves the performance of the Node.js application
- It automatically handles all errors in the application
10/25 In Node.js, which method is used to spawn a child process?
- process.spawn()
- child_process.spawn()
- system.spawnProcess()
11/25 What is the purpose of the 'util.promisify' function in Node.js?
- To convert a callback-based function into a promise-based one
- To create a new Promise object
- To optimize utility functions for performance
12/25 What is the best practice for managing asynchronous code in Node.js?
- Using nested callbacks
- Using Promises and async/await
- Executing synchronous functions in parallel
- Avoiding asynchronous code
13/25 Which of the following is a benefit of using TypeScript with Node.js?
- Automatic error correction in runtime
- Static typing and compile-time error checking
- Increased runtime performance
- Direct access to Node.js API without imports
14/25 Which command is used to create a new Node.js project?
- npm new project
- npm init
- node start
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 Which of the following are considered best practices in Node.js error handling?
- Using try/catch for synchronous code
- Using process.on('error', callback) for global error handling
- Handling errors at the root level of the application
- Using Promises or async/await for asynchronous error handling
17/25 Which environment variable is commonly used to set the port for a Node.js web server?
- PORT
- SERVER_PORT
- HTTP_PORT
18/25 What is the output of 'console.log(1 + '2' + 3)' in Node.js?
- '123'
- 6
- '15'
19/25 Which module is used to create a web server in Node.js?
- http
- server
- net
20/25 What is the purpose of the 'body-parser' middleware in Express apps?
- To parse incoming request bodies
- To authenticate user requests
- To parse URL parameters
21/25 Which of these statements about the Node.js 'crypto' module is true?
- It provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions
- It is used for creating cryptographically secure random numbers
- It can only encrypt data but cannot decrypt
22/25 What is the command to list installed packages in a Node.js project?
- npm list
- npm installed
- node list-packages
23/25 In Node.js, which is the correct way to import a module stored in a file named 'example.js'?
- var example = require('./example.js')
- import example from './example.js'
- include './example.js'
24/25 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
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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