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Redux State Management MCQs Solution | TCS Fresco Play | Fresco Play | MNC Answers

Redux State Management MCQs Solution | TCS Fresco Play | Fresco Play | TCS

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1. Which of the following is not an implementation of Flux?


2. Modularity in Redux is achieved through ________________


3. In Redux, state variables and objects are never mutated. Instead, new ones are produced.


4. The function random() produces a new random number between 0 and 1 every time you run it. Is this a pure function?


5. Data flow in Redux is:


6. Which of the following is not true about Pure Functions

Can make API calls

7. In Redux Action Types have to be defined as Strings


8. Which of the following Action Objects are syntactically correct?

{ type: 'ADD_TODO', text }

9. Actions in Redux

Send data to Store

10. Which of the following functions can be used to dispatch actions in Redux?

All the options mentioned

11. Action Creators in Redux

All the options mentioned

12. What is the input for the dispatch function?

Action Object

13. Following function is a __________?

(previousState, action) => newState


14. createStore is a function to be imported from ____________


15. Which of the following statements about Reducers is not true?

Can make API calls

16. combineReducers aggregates the output of reducers into a single object representing application state.


17. Which of the following can be done in a Reducer?

Perform Calculations

18. Presentational components of React are connected to the container components of React.


19. State Changes in Redux are stored in such a way that _____________

State changes are stored as new state with references to old state for unchanged sections of the state tree.

20. Which of the following can be done inside a reducer?

Call a pure function

21. What is the helper function that Redux provides for making root reducer?


22. Redux bindings to React are to be imported from ____________.


23. How to access Redux state from store?


24. One can deregister listeners on store by calling function returned by _______________.


26. Which of the following statements about Redux is not true?

Changes are initiated through Actions  -- Wrong

27. Which of the following is not api of redux library


28. React bindings for Redux are enabled by default.


29. Which of the following is a signature of a reducer function?

function name(state, action)

30. How can initial state be passed to store the, using the createStore function?

Pass it as second aurgument

31. The function double is defined as below. Is this a pure function?

const double = x => x * 2;


32. How is the context of store passed to React components?

Using Provider

33. Redux applications follow _____________________

Functional Programming

34. What are middleware used for?

To create new dispatch function

35. How to register for listeners on store?


36. Redux can be used with React, AngularJS, BackboneJS and many others.


37. Which components take care of connecting to Redux store for data fetching and state updates?


38. How do you bind action creators with dispatch function?



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