Redux state management MCQs with answer | Redux state management Objective Type Questions with Answer | Redux state management Quiz | Redux state management Practise Questions with answers
1.Which of the following is not an implementation of Flux?
ans – Fluxit
2.Modularity in Redux is achieved through ________________
ans – Reducers
3.In Redux, state variables and objects are never mutated. Instead, new ones are produced.
ans – True
4.Data flow in Redux is_____
ans – Uni-Directional
5.The function random() produces a new random number between 0 and 1 every time you run it. Is this a pure function?
ans – False
6.Which of the following is not true about Pure Functions
ans – Can make API calls
7.In Redux Action Types have to be defined as Strings
ans – True
8.Which of the following Action Objects are syntactically correct?
ans – { type: ‘ADD_TODO’, text }
9.Which of the following functions can be used to dispatch actions in Redux?
ans – All the options mentioned
10.What is the input for the dispatch function?
ans – Action Object
11.createStore is a function to be imported from ____________
ans – Redux
12.Which of the following statements about Reducers is not true?
ans – Can make API calls
13.combineReducers aggregates the output of reducers into a single object representing application state.
ans – True
14.Which of the following can be done in a Reducer?
ans – Perform Calculations
15.Presentational components of React are connected to the container components of React
ans – True
16.Which of the following can be done inside a reducer?
ans – Call a pure function
17.What is the helper function that Redux provides for making root reducer?
ans – CombineReducer()
18.Redux bindings to React are to be imported from ____________.
ans – ReactRedux
19.How to access Redux state from store?
ans – getState()
20.One can deregister listeners on store by calling function returned by _______________.
ans – subscribe(listner)
21.Which of the following statements about Redux is not true?
ans – Changes are initiated through Actions
22.Which of the following is not api of redux library
ans – connect()
23.React bindings for Redux are enabled by default.
ans – False
24.Which of the following is a signature of a reducer function?
ans – function name(state, action)
25.How can initial state be passed to store the, using the createStore function?
ans – Pass it as second aurgument
26.The function double is defined as below. Is this a pure function? const double = x => x * 2;
ans – True
27.How is the context of store passed to React components?
ans – Using Provider
28.Redux applications follow_______________
ans – Functional Programming
29.What are middleware used for?
ans – To create new dispatch function
30.How to register for listeners on store?
ans – subscribe(listener)
31.Redux can be used with React, AngularJS, BackboneJS and many others
ans – True
32.Which components take care of connecting to Redux store for data fetching and state updates?
ans – Container
33.How do you bind action creators with dispatch function?
ans – bindActionCreators
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