CogniAIm Interview Questions and Answers

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Q1. Concepts of React, Firebase and Redux.
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Q2. Difference between class and Functional components
Ans. 
Class components are ES6 classes that extend React.Component while functional components are functions that return JSX.
• Class components have state and lifecycle methods while functional components don't.

• Functional components are simpler and easier to read and test.

• Class components are used when we need to manage state or use lifecycle methods while functional components are used for simple UI components.

• Example of clas...read more
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Q3. How firebase works and how redux works ?
Ans. 
Firebase is a backend platform for building web and mobile applications, while Redux is a state management library for JavaScript applications.
• Firebase provides a real-time database, authentication, hosting, and other services for web and mobile apps.

• Redux is used to manage the state of an application in a predictable way, making it easier to debug and test.

• Firebase can be used with Redux to store and retrieve data fro...read more
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Q4. Why Redux is used more ?
Ans. 
Redux is used more due to its ability to manage complex state and simplify data flow in large applications.
• Redux provides a centralized store for application state

• It allows for predictable state management through actions and reducers

• Redux can be used with various front-end frameworks such as React, Angular, and Vue

• It simplifies data flow in large applications by providing a clear separation of concerns

• Redux also enabl...read more
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Q5. Basic questions on Firebase.
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Q6. Why Functional components is preferred over class components ?
Ans. 
Functional components are preferred over class components due to their simplicity and better performance.
• Functional components are simpler and easier to read and write.

• They do not require the use of 'this' keyword, which can be confusing.

• Functional components are faster and have better performance than class components.

• They are easier to test and debug.

• Functional components can be used with React Hooks, which provide a...read more
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You will be assign a assignment to complete in 1 hour

Q1. Tell about yourself and your experience
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Q2. Where do you see yourself in next 5 years?
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