- Courses
- Tutorials
- Practice
- Jobs
State Management with Redux
Question 1
Which of the following is true about redux?
- A
Redux is a predictable state container for JavaScript apps
- B
Redux fundamental principles help in maintaining consistency throughout your application
- C
Redux makes debugging and testing easier
- D
All of the above
Question 2
Actions and states are held together by a function called?
- A
Reducer
- B
Redux
- C
suscribe
- D
view
Question 3
What is Redux primarily used for in React applications?
- A
Fetching data from the API
- B
Managing application state
- C
Styling components
- D
Routing
Question 4
Which of the following is the core principle of Redux?
- A
One-way data flow
- B
Two-way data binding
- C
Functional components only
- D
Component-level state management
Question 5
What does an action in Redux contain?
- A
The logic to modify the state
- B
Only data required to modify the state
- C
The current state of the app
- D
The view of the component
Question 6
Which function is used to combine multiple reducers into one in Redux?
- A
combineActions()
- B
combineReducers()
- C
createReducer()
- D
mergeReducers()
Question 7
Given the following reducer, what is the output of store.getState() if store.dispatch({ type: 'INCREMENT' }) is called?
const counterReducer = (state = { count: 0 }, action) => {
switch (action.type) {
case "INCREMENT":
return { count: state.count + 1 };
default:
return state;
}
};
const store = Redux.createStore(counterReducer);
store.dispatch({ type: "INCREMENT" });
console.log(store.getState());
- A
{ count: 0 }
- B
{ count: 1 }
- C
undefined
- D
Error
Question 8
How do you dispatch an action to Redux store?
- A
store.dispatch()
- B
store.update()
- C
store.set()
- D
dispatch.store()
Question 9
What will be the new state after the following code is executed?
//reducer
const nameReducer = (state = { name: 'Raj' }, action) => {
switch (action.type) {
case 'CHANGE_NAME':
return { ...state, name: action.payload };
default:
return state;
}
};
//dispatch call
dispatch({ type: 'CHANGE_NAME', payload: 'Aryan' });
- A
{ name: 'Raj' }
- B
{ name: 'Aryan' }
- C
{ name: 'Aryan', payload: 'Aryan' }
- D
undefined
Question 10
What is the primary difference between Redux and React's Context API?
- A
Redux is used for component styling, while Context API is used for state management.
- B
Redux offers built-in dev tools, while Context API does not.
- C
Redux is a part of React, while Context API is an external library.
- D
Context API manages state across the entire app, while Redux manages state locally.
There are 10 questions to complete.
