Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 51:

  Which is a valid Apex assignment?

  A. Integer x = 5.0;
  B. Float x = 5.0;
  C. Integer x = 5*1.0;
  D. Double x = 5;
  D. Double x = 5;

• Question 52:

  What is an accurate constructor for a custom controller named "MyController"?

  A. public MyController () { account = new Account () ; }
  B. public MyController (sObject obj) { account = (Account) obj; }
  C. public MyController (List objects) { accounts = (List ) objects; }
  D. public MyController (ApexPages.StandardController stdController) { account = (Account) stdController.getRecord(); }
  A. public MyController () { account = new Account () ; }

• Question 53:

  Which two statements are true regarding formula fields? Choose 2 answers

  A. When using the and operator to concatenate strings, the result is automatically truncated to fit the destination.
  B. Fields that are referenced by formula field can not be deleted until the formula is modified or deleted.
  C. When concatenating fields, line breaks can be added to improve readability.
  D. Formula fields may reference formula field on the same object to a level of one deep.
  B. Fields that are referenced by formula field can not be deleted until the formula is modified or deleted.
  D. Formula fields may reference formula field on the same object to a level of one deep.

• Question 54:

  When can a developer use a custom Visualforce page in a Force.com application? (Choose 2)

  A. To generate a PDF document with application data
  B. To create components for dashboards and layouts
  C. To deploy components between two organizations
  D. To modify the page layout settings for a custom object
  A. To generate a PDF document with application data
  B. To create components for dashboards and layouts

• Question 55:

  A developer declared a class as follow.

  public class wysiwyg { // Properties and methods including DML }

  Which invocation of a class method will obey the organization-wide defaults and sharing settings for the running user in the Salesforce Organization?

  A. An Apex Trigger that invokes a helper method in this class
  B. A Visualforce page with an Apex controller that invokes a method in this class
  C. A user on an external system that has an API call into Salesforce that invokes a method in this class
  D. A developer using the Developer Console that invokes a method in this class from the execute anonymous window
  D. A developer using the Developer Console that invokes a method in this class from the execute anonymous window

• Question 56:

  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. Contacttrigger.insurancerates.smokercharge
  C. Insurancerates.smokercharge
  D. Rates.getsmokercharge()
  C. Insurancerates.smokercharge

• Question 57:

  What is a valid way of loading external JavaScript files into a Visualforce page? (Choose 2)

  A. Using an (apex:includeScript)* tag. \>
  B. Using an (apex:define)* tag.
  C. Using a (link)* tag.
  D. Using a (script)* tag.
  A. Using an (apex:includeScript)* tag. \>
  D. Using a (script)* tag.

• Question 58:

  What is the order of operations when a record is saved in Salesforce?

  A. Process flows, triggers, workflow, commit
  B. Workflow, process flows, triggers, commit
  C. Workflow, triggers, process flows, commit
  D. Triggers, workflow, process flows, commit
  D. Triggers, workflow, process flows, commit

• Question 59:

  A company wants to create an employee rating program that allows employees to rate each other. An employees average rating must be displayed on the employee record. Employees must be able to create rating records, but are not allowed to create employee records. Which two actions should a developer take to accomplish this task?

  A. Create a trigger on the Rating object than updates a field on the Employee object.
  B. Create a roll-up summary field on the Employee and use AVG to calculate the average rating score.
  C. Create a lookup relationship between the Rating and Employee object.
  D. Create a master-detail relationship between the Rating and Employee objects.
  B. Create a roll-up summary field on the Employee and use AVG to calculate the average rating score.

• Question 60:

  How can a developer determine, from the DescribeSObjectResult, if the current user will be able to create records for an object in Apex?

  A. By using the isInsertable() method.
  B. By using the isCreatable() method.
  C. By using the hasAccess() method.
  D. By using the canCreate() method.
  B. By using the isCreatable() method.