100% Free DEX-450 Exam Dumps to Pass Exam Easily from TestkingPass
Free DEX-450 Exam Questions DEX-450 Actual Free Exam Questions
Salesforce DEX-450 exam covers a wide range of topics related to programmatic development using Apex and Visualforce in Lightning Experience. Some of the topics covered in the exam include Apex classes and triggers, Visualforce pages and components, Lightning Component Framework, and Salesforce Object Query Language (SOQL). DEX-450 exam also covers topics such as debugging and testing Apex code, managing data with Apex, and managing the user interface with Visualforce.
NEW QUESTION # 70
What is the easiest way to verify a user before showing them sensitive content?
- A. Sending the user an Email message with a passcode.
- B. Calling the Session.forcedLoginUrl method in apex.
- C. Sending the user a SMS message with a passcode.
- D. Calling the generateVerificationUrl method in apex.
Answer: D
NEW QUESTION # 71
Opportunity opp=[select id ,stagename from opportunity limit 1] Given the code above, how can a developer get the label for the stagename field?
- A. Call "opportunity.stagename.label"
- B. Call"opp.stagename.label"
- C. Call"opportunity.stagename.getdescribe().getlabel()"
- D. Call"opp.stagename.getdescribe().getlabel()"
Answer: C
NEW QUESTION # 72
A developer creates a method in an Apex class and needs to ensure that errors are handled properly.What would the developer use? (There are three correct answers.)
- A. ApexPages.addErrorMessage()
- B. A try/catch construct
- C. .addError()
- D. Database.handleException()
- E. A custom exception
Answer: B,C,E
NEW QUESTION # 73
A developer needs to provide a way to mass edit,update, and delete records from a list view in which two ways can this be accomlpished? choose 2 answers
- A. Create a new visualforce page and apex controller for the list view that provides mass edit,update and delete functionality
- B. Download an unmanaged package from the appexchange that provides customizable mass edit, update and delete functionality
- C. Download a managed package from the appexchange that provides customizable enhanced list views and buttons
- D. Configure the user interface and enable both inline editing enhanced lists
Answer: A,C
NEW QUESTION # 74
What are the supported content sources for custom buttons and links? (Choose 2 Answers)
- A. URL.
- B. Static Resource.
- C. Chatter File.
- D. VisualForce Page.
- E. Lightning Page.
Answer: A,D
NEW QUESTION # 75
How does the Lightning Component framework help developers implement solutions faster?
- A. By providing an Agile process with default steps
- B. By providing change history and version control
- C. By providing code review standards and processes
- D. By providing device-awareness for mobile and desktops
Answer: D
NEW QUESTION # 76
A developer wrote a workflow email alert on case creation so that an email is sent to the case owner manager when a case is created. When will the email be sent?
- A. Before Committing to database.
- B. After Trigger execution.
- C. After Committing to database.
- D. Before Trigger execution.
Answer: C
NEW QUESTION # 77
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to Include helper methods that are not used by the Web Application In the Implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?
- A.
- B.
- C.
- D.
Answer: A
NEW QUESTION # 78
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. InsuranceRates.smokerCharge
- D. ContactTrigger.InsuranceRates.smokerCharge
Answer: C
NEW QUESTION # 79
A Lightning component has a wired property, searchResults, that stores a list of Opportunities. Which definition of the Apex method, to which the searchResults property is wired, should be used?
- A. @AuraEnabled(cacheable=false)
public static List<Opportunity> search(String term) { /*implementation*/ } - B. @AuraEnabled(cacheable=true)
public static List<Opportunity> search(String term) { /* implementation*/ } - C. @AuraEnabled(cacheable=false)
public List<Opportunity> search(String term) { /*implementation*/ } - D. @AuraEnabled(cacheable=true)
public List<Opportunity> search(String term) { /*implementation*/ }
Answer: B
NEW QUESTION # 80
Refer to the following Apex code:
What is the value of x when it is written to the debug log?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 81
A developer is creating an enhancement to an application that will allow people to be related to their employer. Which date model should be used to track the data?
- A. Create a lookup relationship to indicate that a person has an employer
- B. Create a junction object to relate many people to many employers trough master-detail relationship
- C. Create a master detail relationship to indicate that a person has an employer
- D. Create a junction object to relate many people to many employers trough lookup relationship
Answer: A
NEW QUESTION # 82
A user selects a value from a multi-select picklist. How is this selected value represented in Apex?
- A. As a string
- B. As a set< string > with one element
- C. As a list< String > with one element
- D. As a string ending with a comma
Answer: A
NEW QUESTION # 83
Which action can a developer take to reduce the execution time of the following code? List<account> allaccounts = [select id from account]; list<account> allcontacts = [select id, accountid from contact]; for (account a :allaccounts){ for (contact c:allcontacts){ if(c.accountid = a.id){ //do work } } }
- A. Use a map <id,contact> for allaccounts
- B. Add a group by clause to the contact SOQL
- C. Create an apex helper class for the SOQL
- D. Put the account loop inside the contact loop
Answer: A
NEW QUESTION # 84
A developer created a Visualforce page and custom controller to display the account type field as shown below.
Custom controller code:
Visualforce page snippet:
The value of the account type field is not being displayed correctly on the page. Assuming the custom controller is properly referenced on the Visualforce page, what should the developer do to correct the problem?
- A. Change theAccount attribute to public.
- B. Convert theAcccunt, type to a String.
- C. Add a getter method for the actType attribute.
- D. Add with sharing to the custom controller.
Answer: C
NEW QUESTION # 85
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. Collect the insert method return value a Saveresult record
- B. Add a try/catch around the insert method
- C. Add a System.debug() statement before the insert method
- D. Set the second insert method parameter to TRUE
Answer: A
NEW QUESTION # 86
A developer is migrating a Visualforce page into a Lightning web component.
The Visualforce page shows information about a single record. The developer decides to use Lightning Data Service to access record data.
Which security consideration should the developer be aware of?
- A. Lightning Data Service handles sharing rules and field-level security.
- B. The isAccessible ( ) method must be used for field-level access checks
- C. Lightning Data Service ignores field-level security.
- D. The with sharing keyword must be used to enforce sharing rules.
Answer: A
NEW QUESTION # 87
Which two are true regarding a Dyno? Choose 2 answers
- A. Has the ability to sleep as a standard and performance Dyno
- B. Is a lightweight Linux container used in a collection to run Heroku applications
- C. Is a light weight VM used to run code on the Heroku Platform
- D. Has Ephemeral filesystems and is rebooted every 24 hours.
Answer: B,D
NEW QUESTION # 88
Which Lightning code segment should be written to declare dependencies on a Lightning component, c:accountList, that is used in a Visualforce page?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 89
Which user can edit a record after it has been locked for approval? (Choose 2)
- A. Any user who approved the record previously
- B. An administrator
- C. Any user with a higher role in the hierarchy
- D. A user who is assigned as the current approver
Answer: B,D
NEW QUESTION # 90
Which three per-transaction limits have higher governor limits in asynchronous Apex transactions?
- A. Maximum CPU time
- B. Maximum heap size
- C. Total SOQL queries
- D. Records returned by SOQL
- E. Maximum execution time
Answer: A,C,D
NEW QUESTION # 91
A Visualforce page has a standard controller for an object that has a lookup relationship to a parent object. How can a developer display data from the parent record on the page?
- A. By using merge field syntax to retrieve data from the parent record.
- B. By adding a second standard controller to the page for the parent record.
- C. By using a roll-up formula field on the child record to include data from the parent record.
- D. By using SOQL on the Visualforce page to query for data from the parent record.
Answer: A
NEW QUESTION # 92
Given the following trigger implementation:
trigger leadTrigger on Lead (before update){
final ID BUSINESS_RECORDTYPEID = '012500000009Qad';
for(Lead thisLead : Trigger.new){
if(thisLead.Company != null && thisLead.RecordTypeId != BUSINESS_RECORDTYPEID){ thisLead.RecordTypeId = BUSINESS_RECORDTYPEID;
}
}
}
The developer receives deployment errors every time a deployment is attempted from Sandbox to Production.
What should the developer do to ensure a successful deployment?
- A. Ensure a record type with an ID of BUSINESS_RECORDTYPEID exists on Production prior to deployment.
- B. Ensure BUSINESS_RECORDTYPEID is pushed as part of the deployment components.
- C. Ensure BUSINESS_RECORDTYPEID is retrieved using Schema.Describe calls.
- D. Ensure the deployment is validated by a System Admin user on Production.
Answer: A
NEW QUESTION # 93
A developer in a Salesforce org with 100 Accounts executes the following code using the Developer console:Account myAccount = new Account(Name = 'MyAccount');Insert myAccount;For (Integer x = 0; x < 150; x++)
{Account newAccount = new Account (Name='MyAccount' + x);try {Insert newAccount;} catch (Exception ex) {System.debug (ex) ;}}insert new Account (Name='myAccount');How many accounts are in the org after this code is run?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 94
Universal Containers has a support process that allows users to request support from its engineering team using a custom object, Engineering_Support__c.
Users should be able to associate multiple engineering_Support__c records to a single Opportunity record.
Additionally, aggregate Information about the Engineering_support__c records should be shown on the Opportunity record.
What should a developer Implement to support these requirements?
- A. Master-detail field from Engineering_Support__c to Opportunity.
- B. Lookup field from Opportunity to Engineering_Support__c
- C. Lookup field from Engineering_support__c to Opportunity
- D. Master-detail field from Opportunity to Engineering_Support__c
Answer: A
NEW QUESTION # 95
......
Latest 100% Passing Guarantee - Brilliant DEX-450 Exam Questions PDF: https://www.testkingpass.com/DEX-450-testking-dumps.html
Verified DEX-450 dumps and 239 unique questions: https://drive.google.com/open?id=1ImyXt3buwDhGrvPGpK-aiORPhiDwkSrV