Q1. ReactJs cover?

Data layer in an application

User Interface layer in an application

both 1st and 2nd

None of the above

Q2. Which of the following command is used to install create-react-app?

npm install -u create-react-app

npm install -f create-react-app

npm install create-react-app

install -g create-react-app

Q3. Who is the father of React.js?

Jordan Walke

Dennis Ritchie

Jordan mike

Nile

Q4. Which of the following acts as the input of a class-based component?

Factory

Class

Props

Render

Q5. What is the correct syntax to write expression in JSX?

{{ expression }}

{ expression }

[ expression ]

_expression

Q6. What is state in react?

Internal storage of the component

A prement storage

both 1st and 2nd

None of the above

Q7. What is the default port where webpack-server runs?

8080

3030

3000

6060

Q8. Everything in react is

Model

State

Method

Component

Q9. What are Props?

Props are used to returns multiple values from the function

Props are functions in the ReactJS

Props are arguments passed into React components

All of the above

Q10. How many numbers of elements a valid react component can return?

1

2

3

4