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React JS Quiz

Updated on 24th Nov, 21 9K Views

Welcome to your React JS Quiz

What does DOM stand for?

Document Object Model

Document Object Manipulator

Direct Object Manipulator

Document Options Model

React is a component based UI library.

True

False

Which library allows React to work well with the DOM?

ReactVR

ReactDOM

React Web

React Native

Which of the following is not an advantage of React?

Declarative

Better Performance

Better Looking UI

Portable

React uses Virtual DOM for improved performance.

True

False

What is JSX used for?

Making it easy to create react components

Making react components load faster

Creating react components with styles

Making react compatible with older versions

Props are passed from a parent components.

True

False

Props cannot be changed by component in which they are passed.

True

False

Which of the following is not True?

State is internal and props are external

State is provided by parents and props are derived internally

State can be changed but props should not be changed

Change in State and Props cause rerender

PropTypes are used for runtime validation of props.

True

False

Which of the following is not a problem in using class components?

Perfromance

call to usper in constructor

binding methods

duplicated lifecycle logic

What does useState hook does?

Allows you to add state in functional components

Creates state more efficient

Allows us to manage states in both class and functional components

Creates compiled version of JSX code

Can you use useEffect Hook to to add lifecycle methods in functional components?

True

False

Can we build our own custom hooks?

True

False

Which of the following is a hook that allows us to create objects that will persist even after component re-renders?

useState

useContext

useRef

usePersistence

How do controlled components manage form data?

State

Props

Refs

All of the above

How do uncontrolled components manage form data?

State

Props

Refs

All of the above

Which event handler gets triggered when a form value changes?

onChange

onUpdate

onCompare

None of the above

Which event handler gets triggered when a form submits?

onSubmit

onSend

onFormSubmission

None of the above

In ReactJS which is the recommended way to handle form data?

Controlled Components

Uncontrolled Components

Pain JavaScript

None of the above

Which of the following is used to add naviagation capabilities to a single page web application?

react-router-dom

react-router-native

All of the above

None of the above

Which of the following component gives you URL that have a hash in them?

BrowserRouter

HashRouter

StaicRouter

HistoryRouter

Which of the following component allows us to create a list of routes out of which the first one that is matched will be rendered?

Switch

Catch

Match

None of the above

Which of the following kinds of link allows us to add special styles to it when it's pointing to the current route?

Link

ActiveLink

NavLink

StaticLink

Which of the following hooks is used to get access to a URL parameter?

useParams

useUrlParams

useCurrentParams

useRouteMatch

Which of the following is state internal to a component?

Local State

Global State

Internal State

None of The Above

Which of the following is state that is not internal to a component?

Local State

Global State

External State

None of The Above

What technique is used to move state from child component to parent component so that it can be shared among multiple child components?

Lifting up State

Extracting State

Moving State

None of The Above

Which of the following is used to share state among multiple components?

Refs

Promise

Context

None of the above

Which of the following hooks are used to get data out of the nearest Provider Component like a Consumer Component?

useProvider

useContext

useState

useRef

Time is Up!

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React JS Quiz

Associated Courses

Data Science Architect Master's Course

Cloud and DevOps Architect Master's Course

Artificial Intelligence Engineer Master's Course

Microsoft Azure Certification Master Training

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