Redux Actions and Reducers MCQ Actions Reducers Practice Questions

Direction: Choose the correct option

What is the typical structure of a Redux action?

A. A function

B. A string

C. An object with a 'type' property and optional payload

D. A class instance

Direction: Choose the correct option

How do you create an action creator?

A. A function that returns an action object

B. A function that dispatches an action

C. A constant string

D. A reducer

Direction: Choose the correct option

In a reducer, why must you not mutate the state?

A. Mutation is allowed

B. Because state is read-only

C. To improve performance

D. Redux relies on immutability to detect changes

Direction: Choose the correct option

What should a reducer return if it doesn't recognize the action type?

A. undefined

C. The current state

D. A new state

Direction: Choose the correct option

How can you combine multiple reducers?

A. Using combineReducers from Redux

B. Using combineStores

C. Using mergeReducers

D. Using a single reducer

Quipoin Menu