LWC Basic Level-1

1.

What is a Lightning Web Component (LWC)?

A way to display records in Salesforce.

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A reusable component for building web applications.

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A way to add fields to a Salesforce record.

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A way to automate Salesforce workflows.

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2.

Which of the following is a feature of LWC?

Server-side rendering

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Full access to the DOM

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Support for legacy JavaScript syntax

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Support for third-party libraries

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3.

How can you pass data from a parent component to a child component in LWC?

By using the @wire decorator

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By using the @api decorator

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By using the @track decorator

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By using the @auraEnabled decorator

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4.

What is the recommended way to handle user input in LWC?

By using the onchange event

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By using the onclick event

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By using the oninput event

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By using the onsubmit event

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5.

Which of the following is an advantage of using LWC over Aura components?

Better performance

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Easier to learn and use

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More flexible styling options

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More powerful data binding

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6.

How do you create a new LWC in Salesforce?

Using the Developer Console

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Using the Force.com IDE

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Using the Lightning App Builder

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Using the Salesforce CLI

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7.

Which decorator do you use to make a property available for use in a parent component?

@wire

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@api

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@track

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@auraEnabled

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8.

Edit QuestioWhich hook method is called after the component is rendered on the client-side?

connectedCallback

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constructor

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disconnectedCallback

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renderedCallback

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9.

Which of the following is not a valid way to style an LWC component?

Using CSS classes

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Using inline styles

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Using the style attribute

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Using JavaScript to modify the DOM

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10.

What is the difference between an LWC and a Aura component?

LWC is more performant than Aura components.

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LWC is easier to learn and use than Aura components.

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LWC uses modern web standards and Aura components use a proprietary framework.

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LWC can only be used in Lightning Experience, while Aura components can be used in both Lightning Experience and Classic.

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11.

Which of the following is not a valid way to use LWC in a Salesforce org?

As a standalone web application.

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As a part of a Lightning page.

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As a custom action in the Salesforce Mobile app.

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As a replacement for Visualforce pages.

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12.

Which method can you use to retrieve data from a server in LWC?

fetch()

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query()

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@wire

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get()

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13.

Which of the following is a recommended best practice for naming an LWC component?

Use camelCase naming convention.

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Use snake_case naming convention.

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Use PascalCase naming convention.

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Use kebab-case naming convention.

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14.

What is the recommended way to perform unit tests for an LWC component?

Using the Lightning Testing Service (LTS)

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Using the Apex Test Framework

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Using a third-party testing framework

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Unit testing is not necessary for LWC components

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15.

Which of the following statements is true regarding the use of events in LWC?

Only parent components can handle events.

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Events can be used for both parent-to-child and child-to-parent communication.

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Events can only be used for child-to-parent communication.

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Events can only be used for component-to-component communication within the same namespace.

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16.

What is the role of the HTML file in an LWC component?

To define the component's style.

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To define the component's properties.

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To define the component's logic.

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To define the component's template.

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17.

Which of the following is not a valid lifecycle hook method in LWC?

constructor

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connectedCallback

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renderedCallback

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updatedCallback

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18.

Which of the following is a valid way to declare a property in an LWC component?

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@property myProp = 'Hello';

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this.myProp = 'Hello';

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19.

Which of the following is a valid way to pass data from a parent component to a child component in LWC?

Using the @wire decorator

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Using the Apex class

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Using the Lightning Data Service

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Using the @api decorator

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20.

Which of the following is not a valid way to bind a function to an event in LWC?

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21.

What is the difference between @wire and @api decorators in LWC?

@wire is used to get data from an external source, while @api is used to pass data between components.

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@api is used to get data from an external source, while @wire is used to pass data between components.

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@wire is used for unit testing, while @api is used for integration testing.

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There is no difference between @wire and @api decorators.

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22.

Which of the following statements is true about the LWC programming model?

LWC components are built with HTML, CSS, and JavaScript.

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LWC components use a proprietary framework.

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LWC components are not compatible with Lightning Experience.

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LWC components are built with Visualforce.

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23.

Which of the following is the correct syntax to import a Lightning web component in another component?

import { MyComponent } from "c/MyComponent";

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import MyComponent from "c/MyComponent";

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import * from "c/MyComponent";

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import { MyComponent } from "./MyComponent";

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24.

Which of the following is not a valid way to handle an event in LWC?

@wire

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addEventListener()

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HTML inline event handler

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Using a method decorator

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25.

Which of the following is not a valid way to import a third-party JavaScript library in LWC?

Using a static resource

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Using a CDN

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Using a serverless function

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Using a script tag in the HTML file

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This quiz has been created using the tool HTML Quiz Generator