QUIZ

Certification Test


Que No. 1 ) How can you create a reusable component in React? A.) By using a JavaScript class B.) By using the "export" keyword C.) By defining a function that returns JSX D.) By using Redux
Que No. 2 ) What is the purpose of the "dangerouslySetInnerHTML" attribute in React? A.) To set the component's HTML content in a safe way B.) To add event handlers to HTML elements C.) To apply inline styles to a component D.) To disable a component's rendering
Que No. 3 ) Which tool can you use to inspect and debug React applications? A.) React DevTools B.) Redux Inspector C.) Chrome Debugger D.) React Inspector
Que No. 4 ) What is the purpose of the "withRouter" HOC (Higher Order Component) in React? A.) To style components B.) To handle routing in functional components C.) To connect a component to Redux D.) To create stateful components
Que No. 5 ) How can you update the state of a component in a class component? A.) Using the "setState" method B.) By directly modifying the state object C.) By calling the "render" method D.) By using the "props" object
Que No. 6 ) What is the purpose of the "render" method in a React component? A.) To update the component's state B.) To define the component's structure and content C.) To handle user input D.) To initialize component properties
Que No. 7 ) How do you create a controlled component in React? A.) By using the "ref" attribute B.) By setting the component's state directly C.) By using the "onChange" event handler D.) By using the "disabled" attribute
Que No. 8 ) What is the purpose of the "React.StrictMode" component in React applications? A.) To disable strict mode B.) To enable concurrent mode C.) To provide a warning for potential issues D.) To optimize performance
Que No. 9 ) How can you prevent a component from rendering in React? A.) By using the "shouldComponentRender" method B.) By returning "false" from the "render" method C.) By setting the component's state to "null" D.) By using the "hidden" attribute
Que No. 10 ) What is the purpose of the "componentWillUnmount" lifecycle method in React? A.) To initialize component state B.) To update component state C.) To perform cleanup operations before a component is unmounted D.) To render child components

Que No. 1 ) How can you create a reusable component in React?

A.) By using a JavaScript class
B.) By using the "export" keyword
C.) By defining a function that returns JSX
D.) By using Redux

Que No. 2 ) What is the purpose of the "dangerouslySetInnerHTML" attribute in React?

A.) To set the component's HTML content in a safe way
B.) To add event handlers to HTML elements
C.) To apply inline styles to a component
D.) To disable a component's rendering

Que No. 3 ) Which tool can you use to inspect and debug React applications?

A.) React DevTools
B.) Redux Inspector
C.) Chrome Debugger
D.) React Inspector

Que No. 4 ) What is the purpose of the "withRouter" HOC (Higher Order Component) in React?

A.) To style components
B.) To handle routing in functional components
C.) To connect a component to Redux
D.) To create stateful components

Que No. 5 ) How can you update the state of a component in a class component?

A.) Using the "setState" method
B.) By directly modifying the state object
C.) By calling the "render" method
D.) By using the "props" object

Que No. 6 ) What is the purpose of the "render" method in a React component?

A.) To update the component's state
B.) To define the component's structure and content
C.) To handle user input
D.) To initialize component properties

Que No. 7 ) How do you create a controlled component in React?

A.) By using the "ref" attribute
B.) By setting the component's state directly
C.) By using the "onChange" event handler
D.) By using the "disabled" attribute

Que No. 8 ) What is the purpose of the "React.StrictMode" component in React applications?

A.) To disable strict mode
B.) To enable concurrent mode
C.) To provide a warning for potential issues
D.) To optimize performance

Que No. 9 ) How can you prevent a component from rendering in React?

A.) By using the "shouldComponentRender" method
B.) By returning "false" from the "render" method
C.) By setting the component's state to "null"
D.) By using the "hidden" attribute

Que No. 10 ) What is the purpose of the "componentWillUnmount" lifecycle method in React?

A.) To initialize component state
B.) To update component state
C.) To perform cleanup operations before a component is unmounted
D.) To render child components

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