Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 351:

  A developer uses an 'after update' trigger on the Account object to update all the Contacts related to the Account. The trigger code shown below is randomly failing.

  List theContacts = new List(); for(Account a : Trigger.new){

  for(Contact c : [SELECT Id, Account_Date__c FROM

  Contact WHERE AccountId = :a.Id]){ c.Account_Date__c = Date.today(); theContacts.add(c); }

  } updates theContacts;

  Which line of code is causing the code block to fail?

  A. An exception is thrown if theContacts is empty
  B. The trigger processes more than 200 records in the for loop.
  C. An exception is thrown if Account_Date__c is null.
  D. A SOQL query is located inside of the for loop.
  D. A SOQL query is located inside of the for loop.

• Question 352:

  A Visual Flow uses an apex Action to provide additional information about multiple Contacts, stored in a custom class, contactInfo. Which is the correct definition of the Apex method that gets additional information?

  A. @InvocableMethod(label='Additional Info') public List getInfo(List contactIds) { /*implementation*/ }
  B. @InvocableMethod(label='additional Info') public static ContactInfo getInfo(Id contactId) { /*implementation*/ }
  C. @invocableMethod(label)='Additional Info') public static List getInfo(List contactIds) { /*Implementation*/ }
  D. @InvocableMethod(Label='additional Info') public ContactInfo(Id contactId) { /*implementation*/ }
  C. @invocableMethod(label)='Additional Info') public static List getInfo(List contactIds) { /*Implementation*/ }

• Question 353:

  A developer is debugging the following code to determinate why Accounts are not being created Account a = new Account(Name = 'A'); Database.insert(a, false); How should the code be altered to help debug the issue?

  A. Add a System.debug() statement before the insert method
  B. Add a try/catch around the insert method
  C. Set the second insert method parameter to TRUE
  D. Collect the insert method return value a Saveresult record
  D. Collect the insert method return value a Saveresult record

• Question 354:

  Which resource can be included in a Lightning Component bundle?Choose 2 answers

  A. Apex class
  B. Adobe Flash
  C. JavaScript
  D. Documentation
  C. JavaScript
  D. Documentation

• Question 355:

  A developer has the following trigger that fires after insert and creates a child Case whenever a new Case is created. List childCases = new List();for (Case parent : Trigger.new){Case child = new Case (ParentId = parent.Id, Subject = parent.Subject);childCases.add(child);}insert childCases; What happens after the code block executes?

  A. Multiple child cases are created for each parent case in Trigger.new.
  B. Child case is created for each parent case in Trigger.new.
  C. The trigger enters an infinite loop and eventually fails.
  D. The trigger fails if the Subject field on the parent is blank.
  B. Child case is created for each parent case in Trigger.new.

• Question 356:

  Which two operations can be performed using a formula field? Choose 2 answers

  A. Displaying the last four digits of an encrypted Social Security number
  B. Triggering a Process Builder
  C. Displaying an Image based on the Opportunity Amount (Missed)
  D. Calculating a score on a Lead based on the information from another field (Missed)
  C. Displaying an Image based on the Opportunity Amount (Missed)
  D. Calculating a score on a Lead based on the information from another field (Missed)

• Question 357:

  A reviewer is required to enter a reason in the comments field only when a candidate is recommended to be hired. Which action can a developer take to enforce this requirement?

  A. Create a required Visualforce component.
  B. Create a formula field.
  C. Create a required comments field.
  D. Create a validation rule.
  D. Create a validation rule.

• Question 358:

  Which query should a developer use to obtain the Id and Name of all the Leads, Accounts, and Contacts that have the company name "Universal Containers"?

  A. IND 'Universal Containers' IN Name Fields RETURNING lead(id, name), account(id,name), contact(id,name)
  B. SELECT lead(id, name), account(id, name), contact(id,name) FROM Lead, Account, Contact WHERE Name = 'Universal Containers'
  C. FIND 'Universal Containers' IN CompanyName Fields RETURNING lead(id,name), account (id,name), contact(id,name)
  D. SELECT Lead.id, Lead. Name, Account.id, Account.Name, Contact.Id, Contact. Name FROM Lead, Account, Contact WHERE CompanyName = 'Universal Containers'
  A. IND 'Universal Containers' IN Name Fields RETURNING lead(id, name), account(id,name), contact(id,name)

• Question 359:

  Where can a developer identify the time taken by each process in a transaction using Developer Console log inspector?

  A. Performance Tree tab under Stack Tree panel
  B. Execution Tree tab under Stack Tree panel
  C. Timeline tab under Execution Overview panel
  D. Save Order tab under Execution Overview panel
  C. Timeline tab under Execution Overview panel

• Question 360:

  Which statement about the Lookup Relationship between a Custom Object and a Standard Object is correct?

  A. The Lookup Relationship on the Custom Object can prevent the deletion of the Standard Object.
  B. The Lookup Relationship cannot be marked as required on the page layout for the Custom Object.
  C. The Custom Object will be deleted when the referenced Standard Object is deleted.
  D. The Custom Object inherits security from the referenced Standard Objects
  C. The Custom Object will be deleted when the referenced Standard Object is deleted.