React Native Basics

What are the core building blocks of a React Native app?

• Components

• State

• Redux

• XML

Which of the following Hooks are commonly used in React Native?

• useEffect

• useState

• useReducer

• useContext

 What is the purpose of props in React Native?

• To manage component state

• To pass data between components

• To define inline styles

• To fetch data from an API

Which of the following are valid ways to style components in React Native?

• Inline styles

• External CSS files

• StyleSheet.create

• Using styled-components

How do you navigate between screens using React Navigation?

• navigation.navigate('ScreenName')

• window.location.href = '/ScreenName'

• history.push('/ScreenName')

• navigation.goBack()

What are key differences between React and React Native?

• React Native does not use the DOM

• React Native uses native components instead of HTML elements

• React Native requires an internet connection to work

• React Native does not support JavaScript

How do you create a button in React Native?

• <button>Click me</button>

• <Button title="Click me" onPress={() => alert('Clicked!')} />

• <TouchableOpacity onPress={() => alert('Clicked!')}><Text>Click me</Text></TouchableOpacity>

• <View onClick={() => alert('Clicked!')}>Click me</View>

 What are the requirements to run a React Native app on a real Android device with Expo Go?

• Install Expo Go on the device

• Connect the device to the same Wi-Fi as the development computer

• Run npx expo start

• Scan the QR code in the Expo Developer Tools

Which of these components are available in React Native by default?

•  <Text>

• <View>

• <ScrollView> 

• <div>

What is the correct way to define a state variable in a functional component?

• const [count, setCount] = useState(0); 

• let count = 0;

• this.state = { count: 0 };

• const count = useEffect(0);