ReactJS Online Test

What is the correct command to create a new React project?

• npx create-react-app myReactApp  

• npm create-react-app

• npx create-react-app

• npm create-react-app myReactApp

What does myReactApp refer to in the following command?

"npx create-react-app myReactApp"

• A reference to an existing app

• The name you want to use for the new app  

• The directory to create the new app in

• The type of app to create

What command is used to start the React local development server?

• npm serve

• npm run dev

• npm start  

• npm build

What is the default local host port that a React development server uses?

• 8080

• 5000

• 3000

• 3500

To develop and run React code, Node.js is required.

• True  

• False

What type of element will be rendered from the following code?

• div

• Component

• ReactDom

• h1

What is the children prop?

• A property that lets you nest components in other components  

• A property that adds child values to state

• A property that lets you set an object as a property

• A property that lets you pass data to child components

Which keyword creates a constant in JavaScript?

• const  

• constant

• var

• let

A copy of the 'real' DOM that is kept in memory is called what?

• React DOM

• Shadow DOM

• DOM

• Virtual DOM  

React component names must begin with an uppercase letter.

• True

• False