React - Online MCQs, Quiz and Practice Questions

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React

React

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Q1. what is the default port where webpack-server will run
1. 8080
2. 6020
3. 3030
4. 3333
Q2. Select the description best suitable for ReactJs
1. none of the mentioned choices
2. Client side framework
3. A Library for building interaction interfaces
4. server side framework
Q3. The number of valid react component can return
1. 2
2. 1
3. 3
4. 4
Q4. _______is used to render React content in an HTML page?
1. ReactDOM.render()
2. ReactDOM.start()
3. React.render()
4. React.mount()
Q5. React Js covers ___
1. Both
2. Data layer in an application
3. User Interface layer in an application
4. none
Q6. Who created React.Js?
1. Jordan mike
2. Jordan Walke
3. Jordan Lee
4. Tim Lee
Q7. State in react is
1. A permanent storage
2. Both of the above
3. Internal storage of the component
4. None of the above
Q8. What about props in react is correct?
1. be changed inside the component
2. none
3. be changed in side other component
4. Not be changed in the component
Q9. ____is used in ReactJs to increase performance
1. Virtual DOM
2. Original DOM
3. none of the mentioned choices
4. BOTH
Q10. ______is used for handling view layers for websites.
1. none of the mentioned choices
2. React
3. QUnit
4. Parsley

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