Below are some multiple choice questions and answers for react native. Solve them and test how much you know about it.
What is React Native?
a) A framework for building native mobile apps using JavaScript
b) A programming language for building web applications
c) A database management system
d) A text editor for writing code
Which programming language is used in React Native?
a) JavaScript
b) Java
c) C#
d) Python
What is JSX in React Native?
a) A styling library
b) A JavaScript syntax extension
c) A testing framework
d) A navigation component
What is the purpose of the “render” method in React Native?
a) To define the initial state of a component
b) To render the component’s output to the screen
c) To handle user input events
d) To define the component’s props
What is the purpose of the “state” in React Native?
a) To store data that can change over time
b) To define the structure of a component
c) To handle navigation between screens
d) To define the component’s layout
How do you define a state in a React Native component?
a) Using the “state” keyword
b) Using the “constructor” method
c) Using the “render” method
d) Using the “setState” method
What is the purpose of the “props” in React Native?
a) To store data that can change over time
b) To define the structure of a component
c) To handle user input events
d) To pass data from a parent component to a child component
How do you pass props to a child component in React Native?
a) Using the “state” keyword
b) Using the “constructor” method
c) Using the “render” method
d) Using attribute-like syntax in the parent component
How do you handle user input events in React Native?
a) By using event handlers like “onClick” or “onChange”
b) By defining a separate method for each event
c) By using the “state” keyword
d) By using the “constructor” method
What is the purpose of the “StyleSheet” component in React Native?
a) To define the layout and styling of components
b) To handle asynchronous data fetching
c) To define the initial state of a component
d) To handle navigation between screens
How do you define styles using the “StyleSheet” component in React Native?
a) Using inline styles
b) Using CSS files
c) Using JavaScript objects
d) Using the “render” method
How do you handle navigation between screens in React Native?
a) By using the “state” keyword
b) By using the “constructor”method
c) By using the “render” method
d) By using a navigation library like React Navigation
Which navigation library is commonly used in React Native?
a) React Router
b) React Native Navigation
c) React Native Router
d) React Navigation
What is the purpose of the “useEffect” hook in React Native?
a) To handle user input events
b) To define the initial state of a component
c) To perform side effects in functional components
d) To define the layout and styling of components
How do you fetch data from an API in React Native?
a) Using the “fetch” function or a library like Axios
b) Using the “state” keyword
c) Using the “render” method
d) Using the “useEffect” hook
What is the purpose of the “FlatList” component in React Native?
a) To handle navigation between screens
b) To render a list of items efficiently
c) To define the structure of a component
d) To define the initial state of a component
How do you handle user input in React Native forms?
a) By using event handlers like “onChangeText”
b) By defining a separate method for each input
c) By using the “state” keyword
d) By using the “constructor” method
What is the purpose of the “AsyncStorage” API in React Native?
a) To handle asynchronous data fetching
b) To store data persistently on the device
c) To define the layout and styling of components
d) To handle navigation between screens
How do you handle errors in React Native?
a) By using try-catch statements
b) By using the “state” keyword
c) By using the “render” method
d) By using error boundary components
What is the purpose of the “ActivityIndicator” component in React Native?
a) To handle navigation between screens
b) To display a loading spinner
c) To define the structure of a component
d) To define the initial state of a component
How do you debug React Native applications?
a) By using console.log statements
b) By using the React Native Debugger
c) By using the “state” keyword
d) By using the “render” method
What is the purpose of the “TouchableOpacity” component in React Native?
a) To handle navigation between screens
b) To define the layout and styling of components
c) To handle user input events with touch gestures
d) To define the initial state of a component
How do you handle device permissions in React Native?
a) By using the “Permissions” API or a library like React Native Permissions
b) By using the “state” keyword
c)By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “Modal” component in React Native?
a) To handle navigation between screens
b) To display content on top of the current screen
c) To define the structure of a component
d) To define the initial state of a component
How do you handle network requests in React Native?
a) By using the “fetch” function or a library like Axios
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “SafeAreaView” component in React Native?
a) To handle navigation between screens
b) To ensure content fits within the safe area of the device’s screen
c) To define the layout and styling of components
d) To define the initial state of a component
How do you handle offline support in React Native?
a) By using the “NetInfo” API or a library like React Native NetInfo
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “Image” component in React Native?
a) To handle navigation between screens
b) To display images
c) To define the structure of a component
d) To define the initial state of a component
How do you handle animations in React Native?
a) By using the “Animated” API or a library like React Native Animated
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “TextInput” component in React Native?
a) To handle navigation between screens
b) To capture user input text
c) To define the layout and styling of components
d) To define the initial state of a component
How do you handle push notifications in React Native?
a) By using the “PushNotification” API or a library like React Native PushNotification
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “ScrollView” component in React Native?
a) To handle navigation between screens
b) To scroll content vertically or horizontally
c) To define the structure of a component
d) To define the initial state of a component
How do you handle deep linking in React Native?
a) By using the “Linking” API or a library like React Native Linking
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “Picker” component in React Native?
a) To handle navigation between screens
b) To provide a dropdown menu for selecting options
c) To define the layout and styling of components
d) To define the initial state of a component
How do you handle biometric authentication in React Native?
a) By using the “Biometrics” API or a library like React Native Biometrics
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “ActivityIndicator” component in React Native?
a) To handle navigation between screens
b) To display a loading spinner
c) To define the structure of a component
d) To define the initial state of a component
How do you handle gestures in React Native?
a) By using the “GestureResponder” system or a library like React Native Gesture Handler
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “WebView” component in React Native?
a) To handle navigation between screens
b) To display web content within the app
c) To define the layout and styling of components
d) To define the initial state of a component
How do you handle form validation in React Native?
a) By using form validation libraries like Formik or Yup
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “Linking” API in React Native?
a) To handle navigation between screens
b) To handle deep linking and URL interactions
c) To define the structure of a component
d) To define the initial state of a component
How do you handle localization in React Native?
a) By using the “i18n” libraries or the built-in “Localization” module
b) By using the “state” keyword
c) By using the “render” method
d) By using the “useEffect” hook
What is the purpose of the “Dimensions” API in React Native?
a) To handle navigation between screens
b) To retrieve information about the device’s screen dimensions
c) To define the layout and styling of components
d) To define the initial state of a component
