Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 431:

  A lead object has a custom field Prior_Email__c. The following trigger is intended to copy the current Email into the Prior_Email__c field any time the Email field is changed:

  

  Which type of exception will this trigger cause?

  A. A null reference exception

  B. A compile time exception

  C. A DML exception

  D. A limit exception when doing a bulk update

  Correct Answer: C

• Question 432:

  A developer needs to test an Invoicing system integration. After reviewing the number of transactions required for the test, the developer estimates that the test data will total about 2 GB of data storage. Production data is not required for the integration testing.

  Which two environments meet the requirements for testing? (Choose two.)

  A. Developer Sandbox

  B. Full Sandbox

  C. Developer Edition

  D. Partial Sandbox

  E. Developer Pro Sandbox

  Correct Answer: BD

• Question 433:

  Which two statements are true about using the @testSetup annotation in an Apex test class? (Choose two.)

  A. The @testSetup annotation cannot be used when the @isTest(SeeAllData=True) annotation is used.

  B. Test data is inserted once for all test methods in a class.

  C. Records created in the @testSetup method cannot be updates in individual test methods.

  D. The @testSetup method is automatically executed before each test method in the test class is executed.

  Correct Answer: D

• Question 434:

  Which statement results in an Apex compiler error?

  A. Map lmap = new Map([Select ID from Lead Limit 8]);

  B. Date d1 = Date.Today(), d2 = Date.ValueOf(`2018-01-01');

  C. Integer a=5, b=6, c, d = 7;

  D. List s = List{`a',`b',`c');

  Correct Answer: D

• Question 435:

  Which approach should a developer use to add pagination to a Visualforce page?

  A. A StandardController

  B. The Action attribute for a page

  C. The extensions attribute for a page

  D. A StandardSetController

  Correct Answer: D

• Question 436:

  A developer is asked to set a picklist field to `Monitor' on any new Leads owned by a subnet of Users. How should the developer implement this request?

  A. Create an after insert Lead trigger.

  B. Create a before insert Lead trigger.

  C. Create a Lead Workflow Rule Field Update.

  D. Create a Lead formula field.

  Correct Answer: C

• Question 437:

  A newly hired developer discovers that there are multiple triggers on the case object. What should the developer consider when working with triggers?

  A. Developers must dictate the order of trigger execution.

  B. Trigger execution order is based on creation date and time.

  C. Unit tests must specify the trigger being tested.

  D. Trigger execution order is not guaranteed for the same sObject.

  Correct Answer: D

• Question 438:

  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 ==null);

  D. myFooController m = new myFooController();System.assert(m.prop ==1);

  Correct Answer: C

• Question 439:

  When an Account's custom picklist field called Customer Sentiment is changed to a value of "Confused", a new related Case should automatically be created.

  Which two methods should a developer use to create this case? (Choose two.)

  A. Process Builder

  B. Apex Trigger

  C. Custom Button

  D. Workflow Rule

  Correct Answer: AB

• Question 440:

  Which two Apex data types can be used to reference a Salesforce record ID dynamically? (Choose two.)

  A. ENUM

  B. sObject

  C. External ID

  D. String

  Correct Answer: AD