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DEX-450 Exam Testking, DEX-450 Questions Answers

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Salesforce DEX-450 certification exam consists of 60 multiple-choice questions that must be completed within 105 minutes. DEX-450 exam is designed to test the candidate's conceptual knowledge and hands-on experience in developing custom applications on the Salesforce platform. DEX-450 exam covers a wide range of topics, including Apex, Visualforce, Lightning Components, SOQL, SOSL, and Governor Limits.

To take the DEX-450 Exam, candidates must have a deep understanding of the Apex programming language, Visualforce markup language, and Lightning Component Framework. They should also have experience in building and deploying custom applications on the Salesforce platform, as well as configuring and customizing the Salesforce environment to meet the specific needs of their organization or clients.

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Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q51-Q56):

NEW QUESTION # 51
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to include helper methods that are not used by the Web Application in the implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?

Answer: D

NEW QUESTION # 52
A developer created a Visualforce page and custom controller to display the account type field as shown below.
Custom controller code:

Visualforce page snippet:

what should the developer do to correct the problem?

A. Change theAccount attribute to public.
B. Add a getter method for the attribute.
C. Add with sharing to the custom controller.
D. Convert theAccount.Type to a String.

Answer: B

NEW QUESTION # 53
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?

A. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount) {}
}
B. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount);
}
C. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount);
}
D. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount) {}
}

Answer: C

NEW QUESTION # 54
What is the order of operations when a record is saved in Salesforce?

A. Process flows, triggers, workflow, commit
B. Triggers, workflow, process flows, commit
C. Workflow, triggers, process flows, commit
D. Workflow, process flows, triggers, commit

Answer: B

NEW QUESTION # 55
A developer executes the following query in Apex to retrieve a list of contacts for each account:
List<account> accounts = [Select ID, Name, (Select ID, Name from Contacts) from Account] ; Which two exceptions may occur when it executes? (Choose two.)

A. SOQL query row limit exception due to the number of contacts.
B. SOQL query row limit exception due to the number of accounts.
C. CPU limit exception due to the complexity of the query.
D. SOQL query limit exception due to the number of contacts.

Answer: B,D

NEW QUESTION # 56
......

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