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Salesforce DEX-450 is a certification exam that validates the skills of professionals in programmatic development using Apex and Visualforce in the Lightning Experience. This certification is ideal for developers who want to demonstrate their mastery of the Salesforce platform and their ability to customize and extend Salesforce applications using Apex and Visualforce. The Salesforce DEX-450 certification exam is designed to test the developer's knowledge of Apex programming language, Visualforce markup language, and Lightning Component Framework. Developers who pass this exam can prove their expertise in developing custom applications, automating business processes, and integrating Salesforce with other systems.

Who should take the Salesforce DEX-450 Exam

This course is designed for programme developers starting on the Salesforce platform who require programming customizations on Apex and Visualforce business logic as well as on user interface layers. There are no prerequisites for Salesforce DEX-450 Exam.

Programmatic developers.

To be eligible to take the DEX-450 certification exam, candidates must have a strong understanding of Apex programming language and Visualforce markup language. They should also be familiar with the Salesforce Lightning Experience user interface and have experience in developing custom applications on the platform. Candidates who pass the exam will have demonstrated their ability to develop and customize applications using Apex and Visualforce in the Lightning Experience.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q21-Q26):

NEW QUESTION # 21
Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the apex class, Bodyfat, and its method, calculateBodyfat(). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizer outside the ISV's package namespace. Which approach should a developer take to ensure calculateBodyFat() is accessible outside the package namespace?

A. Declare the class as public and use the public access modifier on the method.
B. Declare the class and method using the public access modifier.
C. Declare the class and method using the global access modifier.
D. Declare the class as public and use the global access modifier on the method.

Answer: C

NEW QUESTION # 22
A developer created a Lightning web component called statusComponent to be inserted into the Account record page.
Which two things should the developer do to make the component available?

A. Add<target> Lightning_RecordPage </target> to the statusComponent.js file.
B. Add <isExposed> true</isExposed> to the statusComponent.js-meta ml file.
C. Add <target> lighting _RecordPage </target> to the statusComponent.js-meta ml file.
D. Add < masterLabel>Account</master Label> to the statusComponent.js-meta ml file.

Answer: B,C

NEW QUESTION # 23
A developer has the controller class below.

Which code block will run successfully in an execute anonymous window?

A. myFooController m = new myFooController();System.assert(m.prop ==null);
B. myFooController m = new myFooController();System.assert(m.prop ==0);
C. myFooController m = new myFooController();System.assert(m.prop ==1);
D. myFooController m = new myFooController();System.assert(m.prop !=null);

Answer: A

NEW QUESTION # 24
Which governor limit applies to all the code in an apex transaction?

A. Number of new records created
B. Number of classes called
C. Elapsed CPU time
D. Elapsed SOQL query time

Answer: C

NEW QUESTION # 25
Which three statements are true regarding cross-object formulas? Choose 3 answers

A. Cross-object formulas can reference fields from master-detail or lookup relantionships
B. Cross-object formulas can reference fields from objects that are up to 10 relantionship away
C. Cross-object formulas can expose data the user does not have access to in a record
D. Cross-object formulas can reference child fields to perform an average
E. Cross-object formulas can be referenced in roll-up summary field

Answer: A,B,C

NEW QUESTION # 26
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