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Redux
A predictable state container for JavaScript applications.
100 questions
Q1.
Redux
Beginner
Q2.
What is Redux and how is it used in web development?
Beginner
Q3.
Can you describe the three principles that Redux is based upon?
Beginner
Q4.
What is an action in Redux?
Beginner
Q5.
How are actions used to change the state in a Redux application?
Beginner
Q6.
What is a reducer in Redux and what role does it play?
Beginner
Q7.
How does Redux differ from local component state in React?
Beginner
Q8.
Define “store” in the context of Redux.
Beginner
Q9.
Can you describe the concept of “single source of truth” in Redux?
Beginner
Q10.
How do you create a Redux store?
Beginner
Q11.
What is meant by “immutable state,” and why is it important in Redux?
Beginner
Q12.
Explain the significance of the combineReducers function.
Beginner
Q13.
What are pure functions and side effects in the context of Redux?
Beginner
Q14.
How do you handle asynchronous actions in Redux?
Beginner
Q15.
What is a “selector” in Redux and what is its purpose?
Beginner
Q16.
How does Redux handle the flow of data and actions?
Beginner
Q17.
Can you explain the difference between a Container and Presentational component in Redux?
Beginner
Q18.
What is middleware in Redux and when would you use it?
Beginner
Q19.
How do you access the Redux store in a React component?
Beginner
Q20.
What is the purpose of the dispatch function in Redux?
Beginner
Q21.
What arguments does createStore receive in Redux?
Beginner
Q22.
Describe the subscribe function in Redux.
Beginner
Q23.
How do you structure action creators in Redux?
Beginner
Q24.
What is an action type and how is it used in Redux?
Beginner
Q25.
Can you give an example of a synchronous action creator?
Beginner
Q26.
How do you handle complex state logic in actions?
Beginner
Q27.
Explain the concept of action creators returning a function for asynchronous operations.
Beginner
Q28.
How do reducers handle state changes in response to different action types?
Beginner
Q29.
What is meant by a “slice reducer”?
Beginner
Q30.
Describe how to properly update the state based on an action.
Beginner
Q31.
How would you reset the state of a Redux store?
Beginner
Q32.
Can you discuss reducer composition and its benefits?
Beginner
Q33.
What is the significance of immutability in reducer functions?
Beginner
Q34.
How do you handle initial state in Redux reducers?
Beginner
Q35.
What are common pitfalls when writing reducers?
Intermediate
Q36.
What is redux-thunk and how does it work?
Intermediate
Q37.
Can you explain the purpose of redux-saga and how it compares to redux-thunk?
Intermediate
Q38.
What is a “side effect” and how do middlewares handle them in Redux?
Intermediate
Q39.
How do you write a custom middleware for Redux?
Intermediate
Q40.
Discuss how middlewares can enhance the capabilities of a Redux store.
Intermediate
Q41.
How do you connect a React component to a Redux store?
Intermediate
Q42.
What are the advantages of using React-Redux’sconnect function?
Intermediate
Q43.
Can you describe the mapStateToProps and mapDispatchToProps functions?
Intermediate
Q44.
Explain the Provider component from React-Redux.
Intermediate
Q45.
How do you use hooks like useDispatch and useSelector in React functional components?
Intermediate
Q46.
What performance considerations should be taken into account when connecting components to Redux?
Intermediate
Q47.
How can you optimize the performance of Redux-connected components?
Intermediate
Q48.
What are Higher Order Reducers (HORs) and how are they used?
Intermediate
Q49.
Can you implement a feature toggle mechanism using Redux?
Intermediate
Q50.
How do you normalize a state shape in Redux?
Intermediate
Q51.
What is a Redux “slice” and how is it used?
Intermediate
Q52.
Explain the “Ducks” pattern in Redux.
Intermediate
Q53.
Why is state normalization recommended in Redux?
Intermediate
Q54.
How do you structure a normalized state?
Intermediate
Q55.
What are the benefits of state denormalization?
Intermediate
Q56.
Can you explain how to manage entity relations in a normalized Redux state?
Intermediate
Q57.
What is Immutable.js and how can it be used with Redux?
Intermediate
Q58.
Discuss the Redux DevTools extension and its features.
Intermediate
Q59.
How do reselect and memoized selectors work in Redux?
Intermediate
Q60.
What are common utilities and libraries used in conjunction with Redux?
Intermediate
Q61.
Describe the significance of the Redux Toolkit and how it helps Redux development.
Intermediate
Q62.
How do you test Redux reducers?
Intermediate
Q63.
What is the recommended approach to test Redux actions?
Intermediate
Q64.
How can you test a Redux-connected React component?
Intermediate
Q65.
Describe the process of testing asynchronous action creators.
Intermediate
Q66.
What tools can you use to facilitate testing in Redux applications?
Intermediate
Q67.
How do you integrate Redux with a framework other than React, like Angular or Vue?
Intermediate
Q68.
Can Redux be used with server-side rendering frameworks like Next.js?
Advanced
Q69.
Discuss the use of Redux with React Native.
Advanced
Q70.
What adaptations are needed to use Redux outside of a UI environment (e.g., in a Node.js backend)?
Advanced
Q71.
How do you organize your files and folders in a large Redux application?
Advanced
Q72.
What strategies can be used to scale Redux actions and reducers?
Advanced
Q73.
Can you explain the concept of “domain-driven design” in the context of a Redux state tree?
Advanced
Q74.
How do feature modules and code splitting affect Redux state management?
Advanced
Q75.
Discuss strategies for managing complex application state with Redux.
Advanced
Q76.
How do you prevent unnecessary renders in Redux-connected components?
Advanced
Q77.
What techniques are available to reduce the size of the Redux store?
Advanced
Q78.
How do you optimize Redux action dispatch and payload size?
Advanced
Q79.
What are best practices for ensuring a scalable Redux state management with large datasets or frequent updates?
Advanced
Q80.
How do you manage form state with Redux?
Advanced
Q81.
Discuss the use of libraries like Redux Form or React Final Form with Redux.
Advanced
Q82.
What are the trade-offs of keeping form state in the Redux store?
Advanced
Q83.
How do you manage user authentication and session state in Redux?
Advanced
Q84.
What considerations should be made for security when storing tokens or sensitive information in Redux?
Advanced
Q85.
How do you manage login and logout workflows with Redux actions and reducers?
Advanced
Q86.
How do you approach migrating a legacy application state management to Redux?
Advanced
Q87.
Can you explain the concept of “state hydration” in the context of SSR and Redux?
Advanced
Q88.
What challenges might arise when integrating Redux into an existing application and how would you address them?
Advanced
Q89.
Describe the current trends and community practices around Redux.
Advanced
Q90.
How has Redux evolved to fit into the modern React ecosystem with hooks?
Advanced
Q91.
What do you believe is the future of Redux given the context of emerging state management libraries?
Advanced
Q92.
How do you model complex state dependencies and computations in Redux?
Advanced
Q93.
Discuss your approach to type checking and ensuring state consistency.
Advanced
Q94.
How do you tackle transactional updates in Redux?
Advanced
Q95.
What strategies would you use for undo/redo functionality in a Redux application?
Advanced
Q96.
How does Redux interact with WebSockets or external data sources?
Advanced
Q97.
Discuss the integration of GraphQL in a Redux-managed application.
Advanced
Q98.
How would you manage local vs. server state in a Redux application?
Advanced
Q99.
How do you structure API requests in Redux actions?
Advanced
Q100.
Discuss methods for caching API responses in the Redux store.
Advanced
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