Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 251:

  A developer wrote a unit test to confirm that a custom exception works properly in a custom controller, but the test failed due to an exception being thrown. What step should the developer take to resolve the issue and properly test the exception?

  A. Use Test.isRunningTest() within the customer controller.

  B. Use database methods with all or none set to FALSE.

  C. Use the finally block within the unit test to populate the exception.

  D. Use try/catch within the unit test to catch the exception.

  Correct Answer: D

• Question 252:

  What is a capability of cross-object formula fields? Choose 3 answers

  A. Formula fields can reference fields from master-detail or lookup parent relationships.

  B. Formula fields can expose data the user does not have access to in a record.

  C. Formula fields can be used in three roll-up summaries per object.

  D. Formula fields can reference fields in a collect of records from a child relationship.

  E. Formula fields can reference fields from objects that are up to 10 relationships away.

  Correct Answer: ABE

• Question 253:

  Where would a developer build a managed package?

  A. Developer Sandbox

  B. Unlimited Edition

  C. Partial Copy Sandbox

  D. Developer Edition

  Correct Answer: D

• Question 254:

  In order to override a standard action with a visualforce page, which attribute must be defined in the tag?

  A. Pagereference

  B. Override

  C. Standardcontroller

  D. Controller

  Correct Answer: C

• Question 255:

  A developer needs to create a Visualforce page that will override the standard Account edit button. The page will be used to validate the account's address using a SOQL query. The page will also allow the user to make edits to the address. Where would the developer write the Account address verification logic?

  A. In a Standard Extension.

  B. In a Standard Controller.

  C. In a Custom Controller.

  D. In a Controller Extension.

  Correct Answer: D

• Question 256:

  A developer has the following class and trigger code:

  public class InsuranceRates { public static final Decimal smokerCharge = 0.01; } trigger ContactTrigger on Contact (before insert) { InsuranceRates rates = new InsuranceRates(); Decimal baseCost = XXX; }

  Which code segment should a developer insert at the XXX to set the baseCost variable to the value of the class variable smokerCharge?

  A. Rates.smokerCharge

  B. Rates.getSmokerCharge()

  C. ContactTrigger.InsuranceRates.smokerCharge

  D. InsuranceRates.smokerCharge

  Correct Answer: D

• Question 257:

  A developer needs to confirm that a Contact trigger works correctly without changing the organization's data. what should the developer do to test the Contact trigger?

  A. Use the New button on the Salesforce Contacts Tab to create a new Contact record.

  B. Use the Open execute Anonymous feature on the Developer Console to run an 'insert Contact' DML statement

  C. Use Deploy from the VSCode IDE to display an 'insert Contact' Apex class.

  D. Use the Test menu on the Developer Console to run all test classes for the Contact trigger

  Correct Answer: D

• Question 258:

  A developer creates a new Apex trigger with a helper class, and writes a test class that only exercises 95% coverage of new Apex helper class. Change Set deployment to production fails with the test coverage warning: "Test coverage of selected Apex Trigger is 0%, at least 1% test coverage is required" What should the developer do to successfully deploy the new Apex trigger and helper class?

  A. Create a test class and methods to cover the Apex trigger

  B. Run the tests using the 'Run All Tests' method.

  C. Remove the falling test methods from the test class.

  D. Increase the test class coverage on the helper class

  Correct Answer: A

• Question 259:

  A developer needs to create records for the object Property__c. The developer creates the following code block:List propertiesToCreate = helperClass.createProperties();try { // line 3 } catch (Exception exp ) { // exception

  handling }Which line of code would the developer insert at line 3 to ensure that at least some records are created, even if a few records have errors and fail to be created?

  A. Database.insert(propertiesToCreate, false);

  B. insert propertiesToCreate;

  C. Database.insert(propertiesToCreate, System.ALLOW_PARTIAL);

  D. Database.insert(propertiesToCreate);

  Correct Answer: A

• Question 260:

  What actions types should be configured to display a custom success message?

  A. Update a record.

  B. Post a feed item.

  C. Delete a record.

  D. Close a case.

  Correct Answer: A