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Free DEX-450 Exam Braindumps
Programmatic Development using Apex and Visualforce in Lightning Experience Questions 236–240 (page: 49)

Updated On: 10-Feb-2026
Page 49 of 93
PDF with 456 Questions

When are code coverage calculations updated?

  1. When unit tests are run on an organization.
  2. When changes are made to an organization's configuration.
  3. When a deployment is validated.
  4. When Apex code is saved.

Answer(s): A



How are debug levels adjusted In the Developer Console?

  1. Under the Settings menu > Trace Settings..., click Change DebugLevel
  2. Under the Edit menu, dick Change DebugLevels
  3. Under the Logs tab, click Change in the DebugLevels panel
  4. Under the Debug menu > Change Log Levels..., click Add/Change in the DebugLevel Action column

Answer(s): D



What are two considerations for custom Apex Exception classes? Choose 2 answers.

  1. Custom Exceptions cannot be extended by other Exception classes.
  2. Custom Exception class names must end with the word 'Exception'.
  3. Custom Exception classes must extend the base Exception class.
  4. Constructor for custom Exceptions can only accept string values as arguments.

Answer(s): B,C



A developer created a Visualforce page with a custom controller to show a list of accounts. The page uses the <apex:SelecList> component, with a variable called "selection", to show the valid values for Account.Type. The page uses an <apex:pageBlockTable> component to display the list of accounts, where the iteration variable is "acct". The developer wants to ensure that when a user selects a type on the <apex : selectList> component, only accounts with that type are shown on the page. What should the developer do to accomplish this?

  1. Use the onChange event to update the list of accounts in the controller when the value changes, and then re-render the pageBlockTable.
  2. Create multiple lists in the controller that represent the relevant accounts for each account type when the page loads, then reference the correct one dynamically on the pageBlockTable.
  3. Add the Rendered={!Acct.type==selection} attribute to the pageBlockTable component
  4. Create a component for each option and use a variable with hide parameter on the element.

Answer(s): A



What should a developer use to implement an automate approval process submission for case?

  1. Process builder.
  2. An assignment rules.
  3. A workflow rules.
  4. Scheduled apex.

Answer(s): A



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