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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 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
4/25 Which of the following is used to create a RESTful web service in Node.js?
- The http module
- The fs module
- The url module
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 default scope of Node.js modules?
- Global
- Local to the file they are defined in
- Local to the directory they are located in
7/25 How do you set an environment variable in Node.js?
- process.env.VAR_NAME = 'value';
- set VAR_NAME='value';
- env.set('VAR_NAME', 'value');
8/25 In Node.js, how can you monitor the execution time of an asynchronous operation?
- Using the console.time() and console.timeEnd() methods
- Using the process.time() method
- Using a custom timing module
- It's not possible to accurately measure asynchronous operations
9/25 Which Node.js module is used to work with file paths?
- fs
- path
- file
10/25 What is the command to list all the global packages installed with npm?
- npm list -g
- npm global list
- npm show all
11/25 How can you capture command line arguments in a Node.js application?
- Using process.argv
- Using console.args
- Using process.arguments
12/25 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
13/25 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
14/25 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
15/25 In Node.js, what is a middleware in the context of Express applications?
- A database management system
- Functions that have access to the request object, the response object, and the next middleware function
- A client-side JavaScript library
16/25 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
17/25 Which module is used to create a web server in Node.js?
- http
- server
- net
18/25 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
19/25 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
20/25 What are Promises in Node.js used for?
- To handle asynchronous operations
- To execute multiple callbacks sequentially
- To generate cryptographic keys
21/25 Which function is used to read data from a readable stream in Node.js?
- stream.read()
- stream.getData()
- stream.fetch()
22/25 What is the command to list installed packages in a Node.js project?
- npm list
- npm installed
- node list-packages
23/25 What is the purpose of the Node.js 'cluster' module?
- To distribute incoming network connections across multiple worker processes
- To manage multiple database clusters
- To enable real-time communication between clients and servers
24/25 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'
25/25 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
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