DEX-450無料問題集「Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience」

質問 1

Universal Containers needs to create a custom user interface component that allows users to enter information about their accounts.
The component should be able to validate the user input before saving the information to the database.
What is the best technology to create this component?

（A）VUE JavaScript framework

（B）Visualforce

（C）Lightning Web Components

（D）Flow

正解：C 解答を投票する

質問 2

Universal Containers decided to transition from Classic to Lightning Experience. They asked a developer to replace a JavaScript button that was being used to create records with prepopulated values.
What can the developer use to accomplish this?

（A）Apex triggers

（B）Validation rules

（C）Quick Actions

（D）Record triggered flows

正解：C 解答を投票する

質問 3

What can be used to override the Account's standard Edit button for Lightning Experience?

（A）Lightning action

（B）Lightning component

（C）Lightning page

（D）Lightning flow

正解：B 解答を投票する

質問 4

When using Salesforce DX, what does a developer need to enable to create and manage scratch orgs?

（A）Dev Hub

（B）Environment Hub

（C）Production

（D）Sandbox

正解：A 解答を投票する

質問 5

What should a developer use to fix a Lightning web component bug in a sandbox?

（A）Execute Anonymous

（B）Developer Console

（C）Force.com IDE

（D）VS Code

正解：D 解答を投票する

質問 6

A developer created a trigger on the Account object and wants to test if the trigger is properly bulkified. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code?
Choose 2 answers

（A）Create a static resource containing test data.

（B）Use the @isTest (isParallel=true) annotation in the test class.

（C）Use the @isTest (seeAllData=true) annotation in the test class.

（D）Use Test, loadData to populate data in your test methods.

正解：A、D 解答を投票する

質問 7

Which two are best practices when it comes to Aura component and application event handling?
Choose 2 answers

（A）Try to use application events as opposed to component events.

（B）Use component events to communicate actions that should be handled at the application level.

（C）Handle low-level events in the event handler and re-fire them as higher-level events.

（D）Reuse the event logic in a component bundle, by putting the logic in the helper.

正解：C、D 解答を投票する

質問 8

What is an example of a polymorphic lookup field in Salesforce?

（A）The LeadId and Contactid fields on the standard Campaign Member object

（B）The Parentid field on the standard Account object

（C）A custom field, Link__c, on the standard Contact object that looks up to an Account or a Campaign

（D）The Whatld field on the standard Event object

正解：D 解答を投票する

質問 9

A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what is defined for payments in the Payment Processor interface.