
ReactJS Fundamentals Quiz
Quiz
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Computers
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University
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Practice Problem
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Hard
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does MERN stack stand for?
MongoDB, Express.js, React.js, and Node.js
MongoDB, Express.js, Angular.js, and Node.js
MongoDB, Ember.js, React.js, and Node.js
MySQL, Express.js, React.js, and Node.js
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are React components?
Reusable, self-contained pieces of code that represent a part of the user interface.
React components are JavaScript objects that store data and methods for manipulating that data.
React components are HTML elements that are used to structure the layout of a web page.
React components are functions that handle user input and update the state of the application.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you pass data from a parent component to a child component in React?
Using state
Using context
Using props
Using Redux
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of state in React?
The purpose of state in React is to handle user input and form submissions.
The purpose of state in React is to control the styling and layout of components.
The purpose of state in React is to store and manage the data that can change over time within a component.
The purpose of state in React is to manage the routing and navigation between different pages.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is JSX in React?
JSX is a syntax extension for JavaScript that allows you to write HTML-like code in your JavaScript files.
JSX is a framework used in React.
JSX is a programming language used in React.
JSX is a JavaScript library used in React.
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the virtual DOM in React?
The virtual DOM is a feature in React that allows developers to create dynamic web applications.
The virtual DOM is a separate component in React that handles rendering and updating of the actual DOM.
The virtual DOM is a concept in React that refers to the use of JavaScript objects to represent the structure of the web page.
The virtual DOM is a lightweight copy of the actual DOM used in React to improve performance.
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the difference between props and state in React?
Props and state are the same thing in React.
Props are used to pass data from a parent component to a child component, while state is used to manage data within a component.
Props are used to manage data within a component, while state is used to pass data from a parent component to a child component.
Props and state are both used to manage data within a component.
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