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Salesforce Certified Platform Developer I Sample Questions (Q122-Q127):

NEW QUESTION # 122
What are three ways for a developer to execute tests in an org? Choose 3.

A. Setup Menu
B. Metadata API
C. Developer Console
D. ToolingAPI
E. Bulk API

Answer: A,B,D

NEW QUESTION # 123
The sales management team requires that the lead source field of the Lead record be populated when Lead is converted. What would a developer use to ensure that a user populates the Lead source field?

A. Process builder
B. Formula field
C. Workflow rule
D. Validation rule

Answer: D

NEW QUESTION # 124
A developer must create a CreditcardPayment class that provides an implementation of an existing Payment class. Public virtual class Payment { public virtual void makePayment(Decimal amount) { /*implementation*/
} } Which is the correct implementation?

A. Public class CreditCardPayment implements Payment {
public override void makePayment(Decimal amount) { /*Implementation*/ }
}
B. Public class CreditcardPayment extends Payment {
public override void makePayment(Decimal amount) { /*implementation*/ }
}
C. Public class CreditCardPayment implements Payment {
public virtual void makePayment(Decimal amount) { /*implementation*/ }
}
D. Public class CreditCardPayment extends Payment {
public virtual void makePayment(Decimal amount) { /*implementation*/ }
}

Answer: B

Explanation:
To create a CreditcardPayment class that provides an implementation of an existing Payment class, the developer should use the extends keyword to indicate that CreditcardPayment is a subclass of Payment, and the override keyword to indicate that CreditcardPayment provides a different implementation of the makePayment method than the superclass. This way, the CreditcardPayment class inherits the properties and methods of the Payment class, but can also modify or add its own behavior.
The other options are not correct because:
* B. Public class CreditCardPayment implements Payment. This option is not valid, because the implements keyword is used to indicate that a class implements an interface, not another class. An interface is a collection of abstract methods that a class must define, but a class is a blueprint for creating objects that have properties and methods.
* C. Public class CreditCardPayment extends Payment. This option is not valid, because it does not use the override keyword to provide a different implementation of the makePayment method. Without the override keyword, the subclass would inherit the same implementation of the method as the superclass, which defeats the purpose of creating a subclass.
* D. Public class CreditCardPayment implements Payment. This option is not valid, because it has the same problem as option B. It uses the implements keyword instead of the extends keyword, which is incorrect for creating a subclass of another class.
References:
* : Inheritance
* : Interfaces

NEW QUESTION # 125
Universal Containers has a Visualforce page that displays a table of every Container__c being rented by a given Account. Recently this page is failing with a view state limit because some of the customers rent over 10,000 containers.
What should a developer change about the Visualforce page to help with the page load errors?

A. Use lazy loading and a transient List variable.
B. Use JavaScript remoting with SOQL Offset.
C. Implement pagination with an OffsetController.
D. Implement pagination with a StandardSetController.

Answer: D

NEW QUESTION # 126
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: C

Explanation:
The correct answer is option C. In Salesforce, a custom SOAP Web Service is defined using Apex with annotations that enable classes and methods to be exposed as web service endpoints. Helper methods that are not used by the Web Application should not be declared as webservice. They can be private or public but should not have the webservice keyword in their declaration. The webservice keyword is specifically for methods that are exposed to external applications via SOAP API.
References: The information can be referenced from the official Salesforce documentation on creating custom web services with Apex: Creating Custom Web Services.

NEW QUESTION # 127
......

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