Free DEX-450 Exam Braindumps
Programmatic Development using Apex and Visualforce in Lightning Experience Questions 196–200 (page: 41)

Updated On: 10-Feb-2026

Which two number expression evaluate correctly? Choose 2 answers

  1. Integer I = 3.14159;
  2. Decimal D = 3.14159;
  3. Long I = 3.14159;
  4. Double D =3.14159;

Answer(s): B,D



A visualforce interface is created for Case Management that includes both standard and custom functionality defined in an Apex class called myControllerExtension.
The visualforce page should include which <apex:page> attribute(s) to correctly implement controller functionality?

  1. StandardController = "case" and extensions =" myControllerExtension"
  2. Extensions=" myControllerExtension"
  3. Controller=" myControllerExtension"
  4. Controller = "case" and extensions =" myControllerExtension"

Answer(s): A



Before putting an app into production, which step should be taken?

  1. Run the production check feature via the web interface
  2. Switch to a production database
  3. Insure that you have installed a performance introspection add-on
  4. Scale your dynos

Answer(s): A



A developer created a lightning component name accountList.cmp that display a list of Accounts.
Client-side logic that is executed when a user hovers over an account in the list should be stored in which bundle member?

  1. AccountListHelper.js
  2. AccountListRenderer.js
  3. AccountList.renderer
  4. AccountList.helper

Answer(s): C



A developer is creating a test coverage for a class and needs to insert records to validate functionality. Which method annotation should be used to create records for every method in the test class?

  1. @BeforeTest
  2. @isTest(SeeAllData=True)
  3. @TestSetup
  4. @PreTest

Answer(s): C



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