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NodeJS Basics

1/25 Which of the following is a core module in Node.js?
- Express
- fs
- Bootstrap
2/25 Which of the following allows you to run Node.js applications in a cluster to improve performance?
- Node Cluster Module
- Node Performance Worker
- Node Load Balancer
3/25 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
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 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
6/25 Which method is used to read the content of a file in Node.js?
- fs.readFile()
- fs.readContent()
- fs.getContent()
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 What is the purpose of the package.json file in a Node.js application?
- To store configuration settings
- To define the application entry point
- To list dependencies and scripts
- To compile the application code
9/25 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
10/25 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
11/25 What does the 'require' function do in Node.js?
- Loads a JavaScript library
- Imports a module
- Requests data from a web service
12/25 How can you capture command line arguments in a Node.js application?
- Using process.argv
- Using console.args
- Using process.arguments
13/25 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
14/25 What is the use of the 'express' package in Node.js?
- Data encryption
- Web application framework
- File compression
15/25 Which file extension is commonly used for Node.js modules?
- .node
- .js
- .npm
16/25 How do you enable strict mode in a Node.js file?
- use strict;
- enable strict;
- strict mode;
17/25 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
18/25 What is the purpose of the Node.js 'cluster' module?
- To enable load balancing over multiple CPU cores
- To manage a cluster of database connections
- To cluster data for machine learning tasks
- To synchronize the execution of multiple node instances
19/25 How can you access the query string parameters in an Express route?
- req.query
- req.params
- req.body
20/25 Which module is used to create a web server in Node.js?
- http
- server
- net
21/25 What are Promises in Node.js used for?
- To handle asynchronous operations
- To execute multiple callbacks sequentially
- To generate cryptographic keys
22/25 Which function is used to read data from a readable stream in Node.js?
- stream.read()
- stream.getData()
- stream.fetch()
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 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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