DEX-450試験無料問題集（202題）「Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience 認定」

出題：1

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.

Which implementation is correct to use the PaymentProcessor interface class?

A.

B.

C.

D.

正解：A 解答を投票する

出題：2

Managers at Universal Containers want to ensure that only decommissioned containers are able to be deleted in the system. To meet the business requirement a Salesforce developer adds "Decommissioned" as a picklist value for the Status _c custom field within the Container _c object.
Which two approaches could a developer use to enforce only Container records with a status of "Decommissioned" can be deleted?
Choose 2 answers

A. Apex trigger

B. After record-triggered flow

C. Before record-triggered flaw

D. Validation rule

正解：A,B 解答を投票する

出題：3

A developer is implementing an Apex class for a financial system. Within the class, the variables 'creditAmount' and 'debitAmount' should not be able to change once a value is assigned.
In which two ways can the developer declare the variables to ensure their value can only be assigned one time?
Choose 2 answers

A. Use the final keyword and assign its value when declaring the variable.

B. Use the static keyword and assign its value in a static initializer.

C. Use the final keyword and assign its value in the class constructor.

D. Use the static keyword and assign its value in the class constructor.

正解：A,C 解答を投票する

出題：4

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. Record triggered flows

B. Quick Actions

C. Apex triggers

D. Validation rules

正解：B 解答を投票する

出題：5

What are two benefits of using declarative customizations over code?
Choose 2 answer

A. Declarative customizations automatically update with each Salesforce release.

B. Declarative customizations automatically generate test classes.

C. Declarative customizations generally require less maintenance

D. Declarative customizations cannot generate run time errors

正解：A,C 解答を投票する

出題：6

A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Within the class, the developer identifies the following method as a security threat:
ist<Contact> performSearch (String lastName} [
return Database.query('SELECT Id, FirstName, LastName FROM Contact WHERE LastName Like s'+lastName+'s'")?; What are two ways the developer can update the method to prevent a SOQL injection attack?
Choose 2 answers

A. Use variable binding and replace the dynamic query with a static SOQL.

B. Use a regular expression on the parameter to remove special characters.

C. Use the sacapeSingleQuotes method to sanitize the parameter before its use.

D. Use the Readonly annotation and the with sharing keyword on the class.

正解：B,D 解答を投票する

出題：7

Management asked for opportunities to be automatically created for accounts with annual revenue greater than $1, 000,000. A developer created the following trigger on the Account object to satisfy this requirement.

Users are able to update the account records via the UI and can see an opportunity created for high annual revenue accounts. However, when the administrator tries to upload a list of 179 accounts using Data Loader, it fails with system, Exception errors.
Which two actions should the developer take to fix the code segment shown above?
Choose 2. answers

A. Use Database query to query the opportunities.

B. Check if all the required fields for Opportunity are being added on creation.

C. Query for existing opportunities outside the for loop.

D. Move the DML that saves opportunities outside the for loop.

正解：C,D 解答を投票する

出題：8

A developer needs to create a baseline set of data (Accounts, Contacts, Products, Assets) for an entire suite of Apex tests allowing them to test isolated requirements for various types of Salesforce cases.
Which approach can efficiently generate the required data for each unit test?

A. Create a mock using the HttpcalloutMock interface.

B. Add @IsTest (seeAllData=true) at the start of the unit test class.

C. Use @TestSetup with a void method.

D. Create test data before Test .startTest() in the unit test.

正解：C 解答を投票する

出題：9

When the code executes, a DML exception is thrown.
How should a developer modify the code to ensure exceptions are handled gracefully?

A. Remove null items from the list of Accounts.

B. Implement the upset DML statement.

C. Implement a try/catch block for the DML.

D. Implement Change Data Capture.

正解：C 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：10

A developer has a single custom controller class that works with a Visualforce Wizard to support creating and editing multiple sObjects. The wizard accepts data from user inputs across multiple Visualforce pages and from a parameter on the initial URL.
Which three statements are useful inside the unit test to effectively test the custom controller?
Choose 3 answers

A. String nextPage = controller.save().getUrl ();

B. ApexPages.currentPage ().getParametera(}.put{'input', "TeatValue');

C. public Extendedcontroller (ApexPages.Standardcontraller entrl) { }

D. insert pageret;

E. Test. setCurrentPage (pageRef) ;

正解：A,B,E 解答を投票する

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