Redux & Redux Toolkit Course
Redux & Redux Toolkit
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Beginner

Beginner Interview Questions

Definition

Common introductory questions asked to ensure a candidate understands the basic flow and purpose of Redux.

Explain Like I'm New

The interviewer wants to know if you understand what a Store, Action, and Reducer are, and if you know why Redux exists.

Real World Example

Being asked: 'Explain the Redux Data Flow as if I were 5 years old.'

Common Use Cases

  • •Junior Developer Interviews

Terminal Output

bash / terminal
/* Q: What problem does Redux solve? A: Redux solves the problem of global state management and "Prop Drilling". In large React applications, passing data down through dozens of component layers becomes unmaintainable. Redux centralizes the data into a single global store, allowing any component to access the exact data it needs directly, resulting in cleaner code and predictable state updates. */

Interview Questions

basic

  • What are the three core principles of Redux?

intermediate

  • What is the difference between `useSelector` and `useDispatch`?

Flash Cards

Question

Three principles?

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Answer

1. Single source of truth (One Store). 2. State is read-only (Must use Actions). 3. Changes are made with pure functions (Reducers).

Question

Selector vs Dispatch?

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Answer

`useSelector` is used to READ data from the store. `useDispatch` is used to SEND actions to the store to trigger a change.