React Native React Native State Management & Performance

Question 1

Which React hook is used to manage local component state in React Native?

Accepted Answer

useState

Answer

useLocalState

Answer

useStore

Answer

useData

Question 2

What is the primary purpose of the useEffect hook in React Native?

Accepted Answer

To perform side effects like API calls and subscriptions

Answer

To add visual effects to components

Answer

To memoize expensive computations

Answer

To manage global state

Question 3

Which library provides a global state management solution commonly used in React Native apps?

Accepted Answer

Redux

Answer

ReactStore

Answer

GlobalState

Answer

AppContext

Question 4

What does the useMemo hook do in React Native?

Accepted Answer

Memoizes the result of an expensive computation

Answer

Stores persistent data between sessions

Answer

Manages async state updates

Answer

Creates memoized callback functions

Question 5

What is the Context API used for in React Native?

Accepted Answer

Sharing state across components without prop drilling

Answer

Connecting to external APIs

Answer

Managing async operations

Answer

Handling device context like orientation

Question 6

Which hook from Redux Toolkit allows a component to read from the Redux store?

Accepted Answer

useSelector

Answer

useStore

Answer

useState

Answer

useRedux