VCETorrent DEX-450 Real Exam Question Answers Updated [Oct 04, 2025]
Easily To Pass New Salesforce DEX-450 Dumps with 202 Questions
To earn the Salesforce DEX-450 certification, candidates must pass a 60-question multiple-choice exam within 120 minutes. DEX-450 exam is designed to test the candidate’s knowledge and skills across various areas of programmatic development on the Salesforce platform. Candidates are expected to have a strong understanding of Apex programming language, Visualforce framework, and Lightning Experience. Additionally, candidates must be able to demonstrate their ability to build custom applications and integrate external systems using Apex and Visualforce. The Salesforce DEX-450 certification is a valuable credential that can help developers advance their career and increase their earning potential.
NEW QUESTION # 91
The following automations already exist on the Account object;
* A workflow rule that updates a field when a certain criteria is met
* A custom validation on a field
* A How that updates related contact records
A developer created a trigger on the Account object.
What should the developer consider while testing the trigger code?
- A. The trigger may fire multiple times during a transaction.
- B. A workflow rule field update will cause the custom validation to run again.
- C. Workflow rules will fire only after the trigger has committed all DML operations to the database.
- D. The flow may be launched multiple times.
Answer: A
NEW QUESTION # 92
A developer has a single custom controller class that works with a Visualforce Wizard to support creating and editing multiple sObjects. The wizard accepts data from user inputs across multiple Visualforce pages and from a parameter on the initial URLWhich statement is unnecessary inside the unit test for the custom controller?
- A. String nextPage = controller.save().getUrl();
- B. Test.setCurrentPage(pageRef),
- C. Public ExtendedController (ApexPages.StandardController cntrl) { }
- D. ApexPages.currentPage().getParameters().put('input', 'TestValue')
Answer: A,C
NEW QUESTION # 93
A developer has a unit test that is failing. To identify the issue, the developer copies the code inside the test method and executes it via the Execute Anonymous Apex Tool. The code then executes without failing. Why did the unit test failed, but not the Execute Anonymous?
- A. The test method has a syntax error in the code.
- B. The test method use a try/catch block
- C. The test method relies on existing data in the database
- D. The test method calls an @future method.
Answer: C
NEW QUESTION # 94
How is a controller and extension specified for a custom object named "Notice" on a Visualforce page?
- A. apex:page controller="Notice_c" extensions="myControllerExtension"
- B. apax:page controllers="Norice_c, myConrrollerExtansicon"
- C. apax:page=Notice extends="myControllerExtension''
- D. apex:page standardController="Notice__c" extensions="myConctrollerExtension"
Answer: D
Explanation:
When creating a Visualforce page that uses a standard controller and a controller extension for a custom object named Notice__c, the correct syntax is:
<apex:page standardController="Notice__c" extensions="myControllerExtension"> Option D: apex standardController="Notice__c" extensions="myControllerExtension" Correct Syntax.
standardController attribute specifies the standard controller for the custom object Notice__c.
extensions attribute specifies the name of the Apex class myControllerExtension that extends the functionality of the standard controller.
Reference:
Options Not Applicable:
Option A: apex
controller="Notice__c" extensions="myControllerExtension"
Incorrect.
The controller attribute is used for custom controllers, not standard controllers.
Option B and C:
Syntax errors and incorrect attributes make these options invalid.
Conclusion:
The correct way to specify a controller and extension for the Notice__c object is Option D.
NEW QUESTION # 95
A developer needs an Apex method that can process Account or Contact records. Which method signature should the developer use?
- A. Public void doWork(Account || Contatc)
- B. Public void doWork(sObject theRecord)
- C. Public void doWork(Record theRecord)
- D. Public void doWork(Account Contact)
Answer: B
NEW QUESTION # 96
Which type of code represents the Model in the MVC architecture when using Apex and Visualforce pages?
- A. A list of Account records returned from a Controller Extension method
- B. A Controller Extension method that saves a list of Account records
- C. A Controller Extension method that uses SOQL to query for a list of Account records
- D. Custom JavaScript that processes a list of Account records
Answer: A
NEW QUESTION # 97
An Apex method, getAccounts, that returns a list of Accounts given a searchTern, is available for Lightning Web Components to use.
What is the correct definition of a Lightning Web Component property that uses the getAccounts method?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 98
The values 'High', 'Medium', and 'Low' are identified as common values for multiple picklists across different objects.
What is an approach a developer can take to streamline maintenance of the picklists and their values, while also restricting the values to the ones mentioned above?
- A. Create the Picklist on each object and select "Restrict picklist to the values defined in the value set".
- B. Create the Picklist on each object as a required field and select "Display values alphabetically, not in the order entered".
- C. Create the Picklist on each object and use a Global Picklist Value Set containing the values.
- D. Create the Picklist on each object and add a validation rule to ensure data integrity.
Answer: C
NEW QUESTION # 99
What are two considerations for deciding to use a roll-up summary field? Choose 2 answer's partner.
- A. Roll-up cannot be performed on formula fields that use cross-object references or on-the-fly calculations such as NOW().
- B. Roll-up summary can be performed on formula fields, but if their formula contains an #Error result, it may affect the summary value.
- C. Roll-up summary fields do not cause validation rules on the parent object unless that object is edited separately.
- D. Roll-up cannot be performed on formula fields.
Answer: A,B
NEW QUESTION # 100
A developer needs to prevent the creation of Request__c records when certain conditions exist in the system. A RequestLogic class exists that checks the conditions.
What is the correct implementation?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION # 101
What should a developer working in a sandbox use to exercise a new test Class before the developer deploys that test production?Choose 2 answers
- A. The Run Tests page in Salesforce Setup.
- B. The Test menu in the Developer Console.
- C. The REST API and ApexTestRun method
- D. The Apex Test Execution page in Salesforce Setup.
Answer: B,D
NEW QUESTION # 102
Universal Containers needs to create a custom user interface component that allows users to enter information about their accounts.
The component should be able to validate the user input before saving the information to the database.
What is the best technology to create this component?
- A. VUE JavaScript framework
- B. Flow
- C. Visualforce
- D. Lightning Web Components
Answer: D
NEW QUESTION # 103
A developer wants to display all of the picklist entries for the Opportunity StageName field and all of the available record types for the Opportunity object on a Visualforce page. Which two actions should the developer perform to get the available picklist values and record types in the controller? Choose 2 answers.
- A. Use Schema.PicklistEntry returned by Opportunity.StageName.getDescribe().getPicklistValues().
- B. Use Schema.RecordTypeInfo returned by RecordType.SObjectType.getDescribe().getRecordTypeInfos().
- C. Use Schema.PicklistEntry returned by Opportunity.SObjectType.getDescribe().getPicklistValues().
- D. Use Schema.RecordTypeInfo returned by Opportunity.SObjectType.getDescribe().getRecordTypeInfos().
Answer: C,D
NEW QUESTION # 104
When a user edits the Postal Code on an Account, a custom Account text field named ''Timezone'' must be updated based on the values in a postalCodeToTimezone_c custom object.
What should be built to implement this feature?
- A. Account assignment rule
- B. Account workflow rule
- C. Account approval process
- D. Account custom trigger
Answer: D
NEW QUESTION # 105
A custom picklist field, Pool Preference , exists on a custom object. The picklist contains the following options: 'Vegan', 'Kosher', 'No Preference'. The developer must ensure a value is populated every time a record is created or updated.
What is the optimal way to ensure a value is selected every time a record is saved?
- A. Write an Apex trigger to ensure a value is selected,
- B. Set "Use the first value in the list as the default value" to True.
- C. Mark the field as Required on the field definition.
- D. Mark the field as Required on the object's page layout.
Answer: B
NEW QUESTION # 106
Which two statements are true regarding formula fields? Choose 2 answers
- A. 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.
- C. When using the & operator to concatenate strings, the result is automatically truncated to fit the destination.
- D. When concatenating fields, line breaks can be added to improve readability.
Answer: A,B
NEW QUESTION # 107
A developer is creating an enhancement to an application that will allow people to be related to their employer. Which data model provides the simplest solution to meet the requirements?
- A. Create a junction object to relate many people to many through master-detail relationship
- B. Create a lookup realtionship to indicate that a person has an employer
- C. Create a junction object to relate many people to many through lookup relationship
- D. Create a master-detail relationship to indicate that a person has an employer
Answer: D
NEW QUESTION # 108
What is the easiest way to verify a user before showing them sensitive content?
- A. Calling the generateVerificationUrl method in apex.
- B. Sending the user an Email message with a passcode.
- C. Calling the Session.forcedLoginUrl method in apex.
- D. Sending the user a SMS message with a passcode.
Answer: A
NEW QUESTION # 109
Flow Builder 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 the additional information?
A)
B)
C)
D)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: C
NEW QUESTION # 110
What actions types should be configured to display a custom success message?
- A. Post a feed item.
- B. Delete a record.
- C. Close a case.
- D. Update a record.
Answer: D
NEW QUESTION # 111
A developer wants to display all of the available record types for a Case object. The developer also wants to display the picklist values for the Case.Status field. The Case object and the Case Status field are on a custom visualforce page.
Which action can the developer perform to get the record types and picklist values in the controller? Choose 2 answers
- A. Use Schema.PicklistEntry returned by Case Status getDescribe().getPicklistValues().
- B. Use SOQL to query Case records in the org to get all value for the Status picklist field.
- C. Use SOQL to query Case records in the org to get all the RecordType values available for Case.
- D. Use Schema.RecordTypeinfo returned by Case.SObjectType getDescribe().getRecordTypelnfos()
Answer: A,D
NEW QUESTION # 112
What are two valid options for iterating through each Account in the collection List <Account> named AccountList? Choose 2 answers.
- A. For (List L : AccountList) {...}
- B. For (Account theAccount : AccountList){...}
- C. For(AccountList){...}
- D. For (Integer i=0; i<AccountList. Size();i++){...}
Answer: B,D
NEW QUESTION # 113
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Salesforce DEX-450 certification exam consists of 60 multiple-choice questions that must be completed within 105 minutes. DEX-450 exam is administered by Salesforce and can be taken online or at a testing center. Candidates must achieve a passing score of 65% or higher to earn the certification.
The Programmatic Development using Apex and Visualforce in Lightning Experience certification exam will also test the developer's understanding of Salesforce Lightning Experience, the modernized user interface of Salesforce that offers a sleek and efficient workflow. It is essential for developers who want to make use of the benefits and features offered by the Lightning Experience in their custom applications.
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