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Best DEX-450 Study Material | High Pass-Rate Programmatic Development using Apex and Visualforce in Lightning Experience 100% Free Valid Test Duration

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The Salesforce DEX-450 exam is designed for professionals who wish to demonstrate their knowledge and expertise in programmatically developing applications using Apex and Visualforce in the Lightning Experience. This certification validates the ability of developers to build custom applications on the Salesforce platform using Visualforce, Apex, and Lightning components. The exam is targeted towards developers who have a solid understanding of the Salesforce platform, including data modeling, user interface design, and security.

Achieving the Salesforce DEX-450 certification demonstrates that the candidate has the skills and knowledge required to develop custom business logic and interfaces using Apex and Visualforce in the Lightning Experience. This certification can lead to new career opportunities and may be required for certain job roles within organizations that use Salesforce as their CRM platform.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q148-Q153):

NEW QUESTION # 148
The sales management team at Universal Containers requires that the Lead Source field of the Lead record be populated when a Lead is converted.
What should be used to ensure that a user populates the Lead Source field prior to converting a Lead?

  • A. Validation Rule
  • B. Formula Field
  • C. workflow Rule
  • D. Process Builder

Answer: A


NEW QUESTION # 149
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?

  • A. Use Test.loadData() and a Static Resource to load a standard Pricebook.
  • B. Use @IsTest(SeeAllData=true) and delete the existing standard PriceBook.
  • C. Use Test.getStandardPricebookId() to get the standard PriceBook ID.
  • D. Use @TestVisible to allow the test method to see the standard PriceBook.

Answer: C


NEW QUESTION # 150
When viewing a Quote, the sales representative wants to easily see how many discounted items are included in the Quote Line Items.
What should a developer do to meet this requirement?

  • A. Create a Workflow Rule on the Quote Line Item object that updates a field on the parent Quote when the item is discounted.
  • B. Create a formula field on the Quote object that performs a SUM on the Quote Line Item Quantity field, filtered for only discounted Quote Line Items.
  • C. Create a trigger on the Quote object that queries the Quantity field on discounted Quote Line Items.
  • D. Create a roll-up summary field on the Quote object that performs a SUM on the quote Line Item Quantity field, filtered for only discounted Quote Line Items.

Answer: D


NEW QUESTION # 151
An org tracks customer orders on an Order object and the items of an Order on the Line Item object. The Line Item object has a MasterDetail relationship to the order object. A developer has a requirement to calculate the order amount on an Order and the line amount on each Line item based on quantity and price.
What is the correct implementation?

  • A. Implement the line amount as a numeric formula field and the order amount as a roll-up summary field.
  • B. Implement the Line amount as a currency field and the order amount as a SUM formula field.
  • C. Write a process on the Line item that calculates the item amount and order amount and updates the filed on the Line Item and the order.
  • D. Write a single before trigger on the Line Item that calculates the item amount and updates the order amount on the Order.

Answer: B


NEW QUESTION # 152
Since Aura application events follow the traditional publish-subscribe model, which method is used to fire an event?

  • A. fireEvent()
  • B. registerEvent()
  • C. ernit()
  • D. fire()

Answer: D


NEW QUESTION # 153
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