REACT Practice Test

Question 1

Which of the following React functions will update the data of a component while remaining within the componentWillMount?

Accepted Answer

setState()

Answer

updateState()

Answer

initState()

Answer

addState()

Question 2

What does React not include?

Accepted Answer

All of the above

Answer

Any form of a data layer

Answer

An event system (other than vanilla DOM events)

Answer

Any AJAX capabilities whatsoever

Question 3

Which step should be completed first when configuring Gulp on a developer machine?

Accepted Answer

Define a gulpfile.js

Answer

Import modules

Answer

Create a folder structure

Answer

Launch a local server

Question 4

Which JavaScript API may be used to delete an item from a Flux store's private storage?

Accepted Answer

Lodash

Answer

Toastr

Answer

Strict

Answer

ExtendedJSArrayAPl

Question 5

For type verification in React components, what property name is used?

Accepted Answer

propTypes

Answer

propertyTypesChecking

Answer

propertyTypes

Answer

propTypesChecking

Question 6

In the following code segment, select the reason for adding code to the index.js file - S = jQuery= require("jquery");

Accepted Answer

Bootstrap expects 'jQuery to be in a global space

Answer

Bootstrap expects 'JQuery to be in the path provided

Answer

Bootstrap expects 'JQuery to be listed in the configuration

Answer

Bootstrap expects 'JQuery to be in a local space

Question 7

Prepopulate a form in a React form component using which component lifecycle method

Accepted Answer

componentWillMount

Answer

componentHasMounted

Answer

willTransitionFrom

Answer

willTransitionTo

Question 8

What isn't a Browserify advantage?

Accepted Answer

Increases HTTP requests to get JS modules

Answer

Bundles Node files so they can be used in a browser

Answer

Faster loading applications

Answer

None of the above

Question 9

Choose a programming language that isn't used in the ESLintrc file.

Accepted Answer

C

Answer

JSON

Answer

JavaScript

Answer

YAML

Question 10

What distinguishes the React Router?

Accepted Answer

D)All of the above

Answer

Declaratively configure routes

Answer

Focused on the M in MVC

Answer

Simple nested approach