最新的Salesforce Developer認證 DEX-450考試題庫

問題1

A developer created a new after insert trigger on the Lead object that creates Task records for each Lead.
After deploying to production, an existing outside integration that inserts Lead records in batches to Salesforce is occasionally reporting total batch failures being caused by the Task insert statement. This causes the integration process in the outside system to stop, requiring a manual restart.
Which change should the developer make to allow the integration to continue when some records in a batch cause failures due to the Task insert statement, so that manual restarts are not needed?

A. Use the Database method with allow one set to false.

B. Use a try-catch block after the insert statement.

C. Remove the Apex class from the integration user's profile.

D. Deactivate the trigger before the integration runs.

正確答案: A

問題2

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. Lightning Web Components

B. Flow

C. Visualforce

D. VUE JavaScript framework

正確答案: A

問題3

The following Apex method is part of the ContactService class that is called from a trigger:

How should the developer modify the code to ensure best practices are met?
A)

C)

D)

A. Option B

B. Option D

C. Option C

D. Option A

正確答案: D

問題4

A custom object Trainer__c has a lookup field to another custom object Gym__c.
Which SOQL query will get the record for the Viridian City Gym and all it's trainers?

A. SELECT Id, (SELECT Id FROM Trainers _c) FROM Gym_c WHERE Name = 'Viridian City Gym'

B. SELECT Id, (SELECT Id FROM Trainer_c FROM Gym_c WHERE Name = 'Viridian City Gym"

C. SELECT ID FROM Trainer_c WHERE Gym_r.Name = 'Viridian City Gym'

D. SELECT Id, (SELECT Id FROM Trainers _r) FROM Gym_c WHERE Name = 'Viridian City Gym'

正確答案: D

問題5

What are two characteristics related to formulas?
Choose 2 answers

A. Formulas are calculated at runtime and are not stored in the database.

B. Fields that are used in a formula field can be deleted or edited without editing the formula.

C. Formulas can reference themselves.

D. Formulas can reference values in related objects.

正確答案: A,D

問題6

How can a developer check the test coverage of autolaunched Flows before deploying them in a change set?

A. Use SOQL and the Tooling API.

B. Use the Code Coverage Setup page,

C. Use the Flow Properties page.

D. Use the ApextestResult class.

正確答案: A

問題7

Which annotation exposes an Apex class as a RESTful web service?

A. @Aurabnabled(cacheable=true)

B. @RemoteAction

C. @RestResource (urlMapping='/myService/*"')

D. @HttpInvocable

正確答案: C

問題8

Which three resources in an Aura component can contain JavaScript functions?
Choose 3 answers

A. Controller

B. Renderer

C. Helper

D. Style

E. Design

正確答案: A,B,C

問題9

How is a controller and extension specified for a custom object named "Notice" on a Visualforce page?

A. apex:page controllers="Notice_c, myContcollerExtension"

B. apex:page standardController="Notice_c" extensions="myControllerExtension""

C. apex:pege=Notice extends="myControllerExtension"

D. apex:page controller="Notice_c" extensions="myControllerExtension"

正確答案: B

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