[Q73-Q87] Best Quality DEX-450 Exam Questions Salesforce Test To Gain Brilliante Result!

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Best Quality DEX-450 Exam Questions Salesforce Test To Gain Brilliante Result!

Preparations of DEX-450 Exam 2023 Salesforce Developer Unlimited 172 Questions

Salesforce DEX-450 certification exam is designed for developers who want to demonstrate their knowledge and skills of programmatic development using Apex and Visualforce in Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification exam is intended for developers who have experience building custom applications on the Salesforce platform and are looking to validate their skills and knowledge to employers and peers. The Salesforce DEX-450 exam covers a broad range of topics including Apex development, Visualforce development, Lightning Component development, and integration with external systems.

Q73. A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what defined for payments in the PaymentProcessor interface. public interface PaymentProcessor { void pay(Decimal amount); } Which is the correct implementation to use the PaymentProcessor interface class?

Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount) {}
}

Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount);
}

Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount);
}

Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount) {}
}

Q74. A Lightning component has a wired property, searchResults, that stores a list of Opportunities. Which definition of the Apex method, to which the searchResults property is wired, should be used?

@AuraEnabled(cacheable=true)
public static List<Opportunity> search(String term) { /* implementation*/ }

@AuraEnabled(cacheable=true)
public List<Opportunity> search(String term) { /*implementation*/ }

@AuraEnabled(cacheable=false)
public static List<Opportunity> search(String term) { /*implementation*/ }

@AuraEnabled(cacheable=false)
public List<Opportunity> search(String term) { /*implementation*/ }

Q75. What is a capability of formula fields? (Choose 3)

Generate a link using the HYPERLINK function to a specific record in a legacy system.

Display the previous values for a field using the PRIORVALUE function.

Return and display a field value from another object using the VLOOKUP function.

Determine if a datetime field has passed using the NOW function.

Determine which of three different images to display using the IF function.

Q76. Which governor limit applies to all the code in an apex transaction?

Elapsed CPU time

Number of new records created

Number of classes called

Elapsed SOQL query time

Q77. What is a capability of cross-object formula fields? Choose 3 answers

Formula fields can reference fields from master-detail or lookup parent relationships.

Formula fields can expose data the user does not have access to in a record.

Formula fields can be used in three roll-up summaries per object.

Formula fields can reference fields in a collect of records from a child relationship.

Formula fields can reference fields from objects that are up to 10 relationships away.

Q78. Which two combined methods should a developer use to prevent more than one open Opportunity on each Account? Choose 2 answers

Create an Account Roll-up Summary field to count open Opportunities

Create an Opportunity Validation Rule to generate an error on insert

Create an Account Trigger to generate an error on Opportunity insert

Create an Opportunity Workflow Rule to auto-close the Opportunity

Q79. If apex code executes inside the execute() method of an Apex class when implementing the Batchable interface, which statement are true regarding governor limits? Choose 2 answers

The Apex governor limits might be higher due to the asynchronous nature of the transaction.

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

The Apex governor limits are relaxed while calling the constructor of the Apex class.

The Apex governor limits cannot be exceeded due to the asynchronous nature of the transaction,

Q80. In a single record, a user selects multiple values from a multi-select picklist.
How are the selected values represented in Apex?

As a List<String> with each value as an element in the list

As a String with each value separated by a comma

As a String with each value separated by a semicolon

As a Set<String> with each value as an element in the set

Q81. Which two statements are true about Apex code executed in Anonymous Blocks? Choose 2 answers

Successful DML operations are automatically committed

All DML operations are automatically rolled back

The code runs with the permissions of the user specified in the runAs() statement

The code runs with the permissions of the logged user.

The code runs in system mode having access to all objects and fields.

Q82. A developer needs to find information about @future methods that were invoked. From which system monitoring feature can the developer see this information?

Scheduled jobs

Apex Jobs

Background Jobs

Asynchronous Jobs

Q83. While writing a test class that covers an OpportunityLineItem trigger, a Developer is unable to create a standard PriceBook since one already exists in the org.
How should the Developer overcome this problem?

Use Test.getStandardPricebookId() to get the standard PriceBook ID.

Use @IsTest(SeeAllData=true) and delete the existing standard PriceBook.

Use Test.loadData() and a Static Resource to load a standard Pricebook.

Use @TestVisible to allow the test method to see the standard PriceBook.

Q84. Which resource can be included in a Lightning Component bundle?Choose 2 answers

Apex class

Adobe Flash

JavaScript

Documentation

Q85. How should a developer create a new custom exception class?

public class CustomException extends Exception{}

CustomException ex = new (CustomException)Exception();

public class CustomException implements Exception{}

(Exception)CustomException ex = new Exception();

Q86. Universal Containers (UC) uses a custom object called Vendor. The Vendor custom object has a master-detail relationship with the standard Account object.
Based on some internal discussions, the UC administrator tried to change the master-detail relationship to a lookup relationship, but was not able to do so.
What is a possible reason that this change was not permitted?

The Account object does not allow changing a field type for a custom field.

The organization wide default for the Vendor object is Public Read/Write.

The Account object has a roll-up summary field on the Vendor object.

Some of the Vendor records have null for the Account field.

Q87. A developer needs to have records with specific field values in order to test a new Apex class.
What should the developer do to ensure the data is available to the test?

Use Anonymous Apex to create the required data.

Use Test.loadDataO < > and reference a CSV file in a static resource.

Use SOQL to query the org for the required data.

Use Test.loadDataO and reference a JSON file in Documents.

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