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

質問 1

Universal Containers recently transitioned from Classic to Lightning Experience.
One of its business processes requires certain values from the Opportunity object to be sent via an HTTP REST callout to its external order management system when the user presses a custom button on the Opportunity detail page. Example values are as follows:
* Name
*Amount
* Account
Which two methods should the developer implement to fulfill the business requirement?
Choose 2 answers

（A）Create a custom Visualforce quick action that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.

（B）Create a Remote Action on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity is updated.

（C）Create an after update trigger on the Opportunity object that calls a helper method using @future (Callout=true) to perform the HTTP REST callout.

（D）Create a Lightning component quick action that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.

正解：A、D 解答を投票する

質問 2

A developer is tasked with building a custom Lightning web component to collect Contact information.
The form will be shared among many different types of users in the org. There are security requirements that only certain fields should be edited and viewed by certain groups of users.
What should the developer use in their Lightning Web Component to support the security requirements?

（A）ui-input-failed

（B）aura-input-failed

（C）lightning-input-failed

（D）force-input-failed

正解：D 解答を投票する

質問 3

While working in a sandbox, an Apex test fails when run in the Test Runner. However, executing the Apex logic in the Execute Anonymous window succeeds with no exceptions or errors.
Why did the method fail in the sandbox test framework but succeed in the Developer Console?

（A）The test method does not use system. runAs to execute as a specific user.

（B）The test method is calling an @future method.

（C）The test method has a syntax error in the code.

（D）The test method relies on existing data in the sandbox.

正解：D 解答を投票する

質問 4

While writing an Apex class, a developer wants to make sure that all functionality being developed is handled as specified by the requirements.
Which approach should the developer use to be sure that the Apex class is working according to specifications?

（A）Include a savepoint and pacabase.rollback().

（B）Run the code in an Execute Anonymous block in the Developer Console.

（C）Include a try/catch block to the Apex class.

（D）Create a test class to execute the business logic and run the test in the Developer Console.

正解：A 解答を投票する

質問 5

What are two use cases for executing Anonymous Apex code?
Choose 2 answers

（A）To delete 15,000 inactive Accounts in a single transaction after a deployment

（B）To add unit test code coverage to an org

（C）schedule an Apex class to run periodically

（D）To run a batch Apex class to update all Contacts

正解：C、D 解答を投票する

質問 6

Which code displays the contents of a Visualforce page as a PDF?

（A）<apex:page contentType-"applic*ticn/pdf''>

（B）<apex:page contentType-"pdf">

（C）<apex:page renderAs-wpdf">

（D）<apex:page renderAs=''application/pdf''>

正解：C 解答を投票する

質問 7

A developer needs to prevent the creation of Request _c records when certain conditions exist in the system. A BequestLogic class exists that checks the conditions.
What is the correct implementation?

（A）

（B）

（C）

（D）

正解：D 解答を投票する

質問 8

If Apex code executes inside the execute() method of an Apex class when implementing the Batchable interface, which two statements are true regarding governor limits?
Choose 2 answers

（A）The Apex governor limits cannot be exceeded due to the asynchronaus nature of the transaction.

（B）The Apex governor limits will use the asynchronous limit levels.

（C）The Apex governor limits are omitted while calling the constructor of the Apex class.

（D）The Apex governor limits are reset for each iteration of the execute () method.

正解：A、D 解答を投票する

質問 9

Which two characteristics are true for Lightning Web Component custom events?
Choose 2 answers

（A）By default a custom event only propagates to it's immediate container.

（B）Data may be passed in the payload of a custom event using @wire decorated properties.

（C）By default a custom event only propagates to its immediate container and to its immediate child component.

（D）Data may be passed In the payload of a custom event using a property called detail.

正解：A、D 解答を投票する

質問 10

Which three steps allow a custom Scalable Vector Graphic (SVG) to be included in a Lightning web component?
Choose 3 answers

（A）Reference the property in the HTML template.

（B）Import the static resource and provide a JavaScript property for it.

（C）Reference the import in the HTML template.

（D）Import the SVG as a content asset file.

（E）Upload the SVG as a static resource.

正解：B、C、E 解答を投票する

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

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