Share Latest Oct-2025 DEX-450Test Practice Test Questions, Exam Dumps [Q65-Q85]

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Share Latest Oct-2025 DEX-450Test Practice Test Questions, Exam Dumps

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Passing the Salesforce DEX-450 exam can open up new career opportunities for developers in the Salesforce ecosystem. Certified developers can work as Salesforce developers, technical architects, or consultants, and help organizations build custom solutions that meet their unique business needs. Additionally, certified developers can also earn higher salaries compared to non-certified developers.

 

NEW QUESTION # 65
What is a valid statement about Apex classes and interfaces? Choose 2 answers:

  • A. Exception classes must end with the word exception.
  • B. A class can have multiple levels of inner classes.
  • C. The default modifier for an interface is private.
  • D. The default modifier for a class is private.

Answer: A,C


NEW QUESTION # 66
Which scenario is valid for execution by unit tests?

  • A. Load data from a remote site with a callout.
  • B. Set the created date of a record using a system method.
  • C. Generate a Visualforce PDF with geccontentAsPDF ().
  • D. Execute anonymous Apex as a different user.

Answer: B


NEW QUESTION # 67
Which tool allows a developer to send requests to the Salesforce REST APIs and view the responses?

  • A. Force.com IDE REST Explorer tab
  • B. Workbench REST Explorer
  • C. REST resource path URL
  • D. Developer Console REST tab

Answer: B


NEW QUESTION # 68
What must the Controller for a Visulforce page utilized to override the standard Opportunity view button?

  • A. A callback constructor to reference the StandardController
  • B. A constructor that initialized a private Opportunity variable.
  • C. The Opportunity StandardController for pre-built functionality
  • D. The StandardSetController to support related lists for pagination

Answer: C


NEW QUESTION # 69
A developer identifies the following triggers on the Expense__c object:

The triggers process before delete, before insert, and before update events respectively.
Which two techniques should the developer implement to ensure trigger best practices are followed?
Choose 2 answers

  • A. Unify the before insert and before update triggers and use Flow for the delete action.
  • B. Create helper classes to execute the appropriate logic when a record is saved.
  • C. Maintain all three triggers on the expense__c object, but move the Apex logic out of the trigger definition.
  • D. Unify all three triggers in a single trigger on the expense__c object that includes all events.

Answer: B,C


NEW QUESTION # 70
A developer created these three Rollup Summary fields in the custom object, Project_ct,

The developer is asked to create a new field that shows the ratio between rejected and approved timesheets for a given project.
Which should the developer use to Implement the business requirement in order to minimize maintenance overhead?

  • A. Apex Trigger
  • B. Process Builder
  • C. Formula field
  • D. Record-triggered Flow

Answer: C


NEW QUESTION # 71
In the code below, what type does Boolean inherit from?
Boolean b= true;

  • A. Class
  • B. Enum
  • C. Object
  • D. String

Answer: C


NEW QUESTION # 72
Which type of code represents the view in the MVC architecture on the Force.com platform?

  • A. An apex method that executes SOQL to retrieve a list of cases
  • B. An apex method in an extension that returns a list of cases
  • C. A visualforce page that dysplays information about case records by iterating over a list of cases
  • D. Validation rules for a page layout that includes a related list of cases

Answer: C


NEW QUESTION # 73
If Apex code executes inside the =x=cuz=() method of an Apex class when implementing the Batchable interface, which two statements are true regarding governor limits?
Choose 2 answers

  • A. The Apex governor limits will use the asynchronous limit levels.
  • B. The Apex governor limits cannot be exceeded due to the asynchronous nature of the transaction.
  • C. The Apex governor limits are reset for each iteration of the execute () method.
  • D. The Apex governor limits are omitted while calling the constructor of the Apex class.

Answer: A,C

Explanation:
Option A: The Apex governor limits are reset for each iteration of the execute() method.
True.
In Batch Apex, each execution of the execute() method is a separate transaction.
Governor limits are reset at the start of each transaction.
Batch Apex operates asynchronously.
Asynchronous Apex has different (often higher) governor limits compared to synchronous Apex.
Even though asynchronous Apex has higher limits, governor limits can still be exceeded, leading to exceptions.
Governor limits apply to all Apex code, including constructors.
There are no exceptions for constructors.
Reference:
Batch Apex
Governor Limits
Option C: The Apex governor limits will use the asynchronous limit levels.
True.
Asynchronous Apex Limits
Option B: The Apex governor limits cannot be exceeded due to the asynchronous nature of the transaction.
False.
Governor Limit Exceptions
Option D: The Apex governor limits are omitted while calling the constructor of the Apex class.
False.
Governor Limits
Conclusion:
The correct statements are A and C.


NEW QUESTION # 74
What should a developer do to check the code coverage of a class after running all tests?

  • A. View the Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
  • B. View the Code Coverage column in the list view on the Apex Classes page.
  • C. View the code coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab,
  • D. Select and run the class on the Apex Test Execution page in the Developer Console.

Answer: C

Explanation:
To check the code coverage of a class after running all tests, a developer can use the Developer Console.
Option B: View the code coverage percentage for the class using the Overall Code Coverage panel in the Developer Console Tests tab.
Correct Method.
In the Developer Console, navigate to the Tests tab.
After running tests, the Overall Code Coverage panel displays code coverage statistics.
You can see the coverage percentage for individual classes.
There is no Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
Code coverage is not displayed there.
Option C: View the Code Coverage column in the list view on the Apex Classes page.
Incorrect.
The Code Coverage column is not displayed by default in the Apex Classes list view.
Code coverage details are accessed via the Developer Console or Apex Test Execution.
Option D: Select and run the class on the Apex Test Execution page in the Developer Console.
Partially Correct but Not the Best Answer.
While you can run tests from the Apex Test Execution page, it doesn't directly show code coverage for individual classes.
The best place to view code coverage is the Overall Code Coverage panel.
Conclusion:
The developer should view the code coverage percentage in the Developer Console's Overall Code Coverage panel, which is Option B.
Reference:
Checking Code Coverage in the Developer Console
Running and Monitoring Tests
Incorrect Options:
Option A: View the Class Test Percentage tab on the Apex Class list view in Salesforce Setup.
Incorrect.


NEW QUESTION # 75
What does the Lightning Component framework provide to developers?

  • A. Extended governor limits for applications
  • B. Templates to create custom components
  • C. Support for Classic and Lightning Uls
  • D. Prebuilt components that can be reused

Answer: D

Explanation:
The Lightning Component framework provides:
Option A: Prebuilt components that can be reused
The framework includes a library of base components that developers can use to build custom components and applications.
These components can be reused and combined to create complex UIs.
Reference:
"The Lightning Component framework provides a set of prebuilt components that you can use to build your own components and applications."
- Lightning Components Developer Guide
Why Other Options Are Incorrect:
Option B:
The Lightning Component framework is primarily for Lightning Experience and Salesforce mobile app, not for Classic UI.
Option C:
It does not provide extended governor limits; governor limits remain the same.
Option D:
While you can create custom components, the framework does not provide templates in the way described.


NEW QUESTION # 76
A developer created a Visualforce page and a custom controller with methods to handle different buttons and events that can occur on the page.
What should the developer do to deploy to production?

  • A. Create a test page that provides coverage of the Visualforce page.
  • B. Create a test class that provides coverage of the Visualforce page.
  • C. Create a test page that provides coverage of the custom controller.
  • D. Create a test class that provides coverage of the custom controller.

Answer: D


NEW QUESTION # 77
A developer must write an Apex method that will be called from a Lightning component. The method may delete an account stored in the accountRec variable. Which method should a developer use to ensure only users that should be able to delete Accounts can succesfully perform deletions?

  • A. AccountRec.sObjectType.isDeleteable()
  • B. Account.isDelketable()
  • C. AccountRec.isdeletable()
  • D. Schema.sObjectType.Account.isDeletable()

Answer: D


NEW QUESTION # 78
Which statement is true about a hierarchical relationship as it pertains to user records?

  • A. It uses a master-detail relationship to allow one user record to be related to another user record
  • B. It uses a special lookup relationship to allow one user record to be related to another user record
  • C. It uses a junction object and master-detail relationship to allow many user records to be related to many other user records
  • D. It uses a junction object and lookup relationships to allow many user records to be related to many other user records

Answer: B


NEW QUESTION # 79
In terms of the MVC paradigm, what are two advantages of implementing the layer of a Salesforce application using Aura Component-based development over Visualforce? Choose 2 answers

  • A. Rich component ecosystem (Missed)
  • B. Automatic code generation
  • C. Server-side run-time debugging
  • D. Self-contained and reusable units of an application (Missed)

Answer: A,D


NEW QUESTION # 80
Given:
Map<ID, Account> accountMap = new Map>ID, Account> ([SELECT Id, Name FROM Account]); What are three valid Apex loop structures for iterating through items in the collection? (Choose three.)

  • A. for (Integer i=0; I < accountMap.size(); i++) {...}
  • B. for (ID accountID : accountMap) {...}
  • C. for (Account accountRecord : accountMap.keySet()) {...}
  • D. for (Account accountRecord : accountMap.values()) {...}
  • E. for (ID accountID : accountMap.keySet()) {...}

Answer: A,D,E


NEW QUESTION # 81
A Lightning component has a wired property, searcResults, 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=true)
    public List<Opportunity> search(String term) { /*implementation*/ }
  • B. @AuraEnabled(cacheable=true)
    public static List<Opportunity> search(String term) { /* implementation*/ }
  • C. @AuraEnabled(cacheable=false)
    public static List<Opportunity> search(String term) { /*implementation*/ }
  • D. @AuraEnabled(cacheable=false)
    public List<Opportunity> search(String term) { /*implementation*/ }

Answer: B


NEW QUESTION # 82
Which code segment can be used to control when the dowork() method is called?

  • A. If(Trigger.isRunning) dowork();
  • B. For (Trigger.isRunning t: Trigger.new) { dowork(); }
  • C. For (Trigger.isInsert t: Trigger.new) { dowork(); }
  • D. If(Trigger.isInsert) dowork();

Answer: D


NEW QUESTION # 83
A company wants to create an employee rating program that allows employees to rate each other. An employee's 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? choose 2 answers

  • A. Create a trigger on the rating object that updates a field on the employee object
  • B. Create a master-detail relanstionship between the rating and employee object
  • C. Create a roll-up sumary field on the employee and use avg to calculate the average rating score
  • D. Create a lookup realntionship beteween the rating and employee object

Answer: B,C


NEW QUESTION # 84
A developer needs to allow users to complete a form on an Account record that will create a record for a custom object. The form needs to display different fields depending on the user's job role. The functionality should only be available to a small group of users.
Which three things should the developer do to satisfy these requirements?
Choose 3 answers

  • A. Add a dynamic action to the Account record page.
  • B. Create a dynamic form.
  • C. Create a custom permission for the users.
  • D. Add a dynamic action to the user's assigned page layouts.
  • E. Create a Lightning web component.

Answer: A,B,C


NEW QUESTION # 85
......

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