Quiz | Croma Campus

What does the command npx stand for?

Node Package Executor
Node Program Executor
Node Process Executor
Node Project Executor

Mark for review

How do you create a new React application using create-react-app?

create-react-app my-app
create-react-app --init my-app
npx create-react-app my-app
react-app create my-app

Mark for review

Which of the following is a backend framework?

React
Angular
Express
Vue.js

Mark for review

Which hook is used to perform side effects in React?

useEffect
useState
useRef
useContext

Mark for review

Which of the following is a popular middleware for handling JSON requests in Express.js?

bodyParser
multer
cookieParser
cors

Mark for review

What does the "M" in MongoDB stand for?

MySQL
Middleware
MapReduce
MongoDB

Mark for review

How do you make an HTTP GET request in Node.js?

axios.get(url)
fetch(url)
http.get(url)
request(url)

Mark for review

How do you create a context in React?

React.createContext()
React.useContext()
React.initContext()
React.newContext()

Mark for review

Which of the following is used to style React components?

CSS
SCSS
Styled-components
All of the above

Mark for review

Which component is known as the root component in a React application?

App
Root
Main
Base

Mark for review

What is the command to create a new MongoDB database?

use dbname
create dbname
new dbname
make dbname

Mark for review

What does the npm command stand for?

Node Package Manager
New Programming Module
Node Program Manager
New Package Manager

Mark for review

What is JSX in React?

A JavaScript XML syntax extension
A JavaScript framework
A database query language
A type of HTTP request

Mark for review

Which method is used to fetch data in React using hooks?

useFetch
useEffect
useState
useReducer

Mark for review

Which method is used to update the state in a React component?

setState
updateState
changeState
setNewState

Mark for review

What does MERN stand for in MERN Stack?

MongoDB, Express, React, Node.js
MySQL, Express, React, Node.js
MongoDB, Express, Redux, Node.js
MongoDB, Express, React Native, Node.js

Mark for review

Which function is used to read a file in Node.js?

fs.readFile()
fs.getFile()
fs.loadFile()
fs.fetchFile()

Mark for review

Which command is used to install MongoDB on a server?

npm install mongodb
apt-get install mongodb
brew install mongodb
install mongodb

Mark for review

Which database is used in the MERN stack?

MySQL
MongoDB
PostgreSQL
SQLite

Mark for review

How do you create a new component in React?

function ComponentName() { }
create ComponentName() { }
new ComponentName() { }
define ComponentName() { }

Mark for review

What is the purpose of the useReducer hook in React?

To manage state
To fetch data
To handle side effects
To create context

Mark for review

Which of the following is a correct way to create a functional component in React?

function MyComponent() { return <div></div>; }
class MyComponent extends React.Component { render() { return <div></div>; } }
React.createComponent() { return <div></div>; }
const MyComponent = () => { return <div></div>; }

Mark for review

What does the command npm init do?

Initializes a new Node.js project
Installs npm
Updates npm
Creates a new package

Mark for review

What is the purpose of the package.json file in a Node.js project?

To define project metadata
To create a new project
To install dependencies
To manage server configurations

Mark for review

What is Node.js primarily used for in the MERN stack?

Creating database schemas
Building server-side applications
Managing user sessions
Developing mobile apps

Mark for review

Which lifecycle method is invoked after a component is rendered in React?

componentDidMount
componentWillMount
render
componentWillUnmount

Mark for review

Which of the following is a NoSQL database?

PostgreSQL
MySQL
MongoDB
SQLite

Mark for review

What is the purpose of the express.Router() in Express.js?

To create a new route instance
To handle HTTP methods
To set up middleware
To manage server configurations

Mark for review

How do you install Express.js using npm?

npm install express
npm get express
npm add express
npm build express

Mark for review

What does the express.static middleware do?

Serves static files
Handles JSON requests
Manages sessions
Routes API requests

Mark for review

Online Exam Quiz

Online

Did you like this Question

Get a 1:1 Mentorship call with our Career Advisor