Salesforce Updated PDI Exam Questions and Answers by nikola

In Salesforce, a controller and extension for a custom object on a Visualforce page can be specified using the  tag. The standardController attribute is used to associate the page with a standard or custom object, and the extensions attribute is used to specify an Apex class that extends the functionality of the standard or custom controller. The code snippet in option C, , correctly demonstrates this by associating the Visualforce page with a custom object named “Notice” and specifying an extension named “myControllerExtension”. References: You can find more information about controllers and extensions in the Visualforce Developer Guide and the [Apex Developer Guide] on Salesforce’s official website.

The code snippet uses a for loop to create a list of 200 Account objects, each with a unique name. Then, it uses the Database.insert method to insert the list of accounts into the database in one DML operation. The Database.insert method returns a list of Database.SaveResult objects, which contain information about the success or failure of each record insertion. However, the code snippet does not check the results or handle any errors that might occur. Therefore, the result of the code snippet is that 200 accounts are inserted, unless an exception is thrown due to a trigger, validation rule, governor limit, or other reason. References:

• Apex Developer Guide: Using Database Methods
• Apex Developer Guide: Bulk DML Exception Handling
• Trailhead: Apex Basics & Database

To include a custom SVG in a Lightning web component, you need to follow these three steps:

• Upload the SVG as a static resource. You can use the Static Resource page in Setup or the Salesforce CLI to upload the SVG file as a static resource. You need to give it a name and a description, and optionally specify a cache control setting1.
• Import the static resource and provide a getter for it in JavaScript. In your Lightning web component’s JavaScript file, you need to import the static resource using the @salesforce/resourceUrl module. Then, you need to define a getter function that returns the URL of the static resource2. For example:

JavaScript

import { LightningElement } from 'lwc';

import customSVG from '@salesforce/resourceUrl/customSVG';

export default class MyComponent extends LightningElement {

get svgURL() {

return customSVG;

}

}

AI-generated code. Review and use carefully. More info on FAQ.

• Reference the getter in the HTML template. In your Lightning web component’s HTML template, you need to use the 

HTML

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In the JavaScript file, you also need to define a handleSVGLoaded method that uses the XMLHttpRequest object to fetch the SVG content and append it to the 

JavaScript

handleSVGLoaded(event) {

const svgElement = event.target;

const xhr = new XMLHttpRequest();

xhr.open('GET', this.svgURL, true);

xhr.onload = () => {

svgElement.innerHTML = xhr.responseText;

};

xhr.send();

}

AI-generated code. Review and use carefully. More info on FAQ.

References:

• 1: Create and Upload a Static Resource (Lightning Web Components Developer Guide)
• 2: Use a Static Resource (Lightning Web Components Developer Guide)
• 3: Use lwc:dom=“manual” (Lightning Web Components Developer Guide)
• 4: Load the SVG Content (Lightning Web Components Developer Guide)

 A standard list controller provides a list of records of a specific object type, such as Contact, and allows you to create Visualforce pages that can display or act on that data1. A standard list controller is suitable for this purpose, because it can easily query the contacts owned by the current user and display them in a table or list. A standard list controller also supports pagination, sorting, filtering, and mass actions2. A standard controller provides access to a single record of a specific object type, such as Account, and is not suitable for displaying a list of records1. A lightning controller is a JavaScript controller that handles user interactions and events in a Lightning web component, and is not related to Visualforce pages3. A custom controller is an Apex class that implements all the logic for a Visualforce page, and requires writing more code than using a standard list controller1. References:

• Standard Controllers and Standard List Controllers | Visualforce Developer Guide | Salesforce Developers
• Using Standard List Controllers | Visualforce Developer Guide | Salesforce Developers
• Lightning Web Components Developer Guide | Salesforce Developers