DEX-450 Exam Details

  • Exam Code
    :DEX-450
  • Exam Name
    :Programmatic Development using Apex and Visualforce in Lightning
  • Certification
    :Salesforce Certifications
  • Vendor
    :Salesforce
  • Total Questions
    :456 Q&As
  • Last Updated
    :Jul 10, 2026

Salesforce DEX-450 Online Questions & Answers

  • Question 391:

    In the Lightning Component framework, where is client-side controller logic contained?

    A. Apex
    B. Visualforce
    C. HTML
    D. JavaScript

  • Question 392:

    A candidate may apply to multiple jobs at the company Universal Containers by submtting a single application per job posting. Once an application is submitted for a job posting, that application cannot be modified to be resubmitted to a different job posting.What can the administrator do to associate an application with each job posting in the schema for the organization?

    A. Create a master-detail relationship in the Job Postings custom object to the Applications custom object.
    B. Create a master-detail relationship in the Application custom object to the Job Postings custom object.
    C. Create a lookup relationship on both objects to a junction object called Job Posting Applications.
    D. Create a lookup relationship in the Applications custom object to the Job Postings custom object

  • Question 393:

    What is the advantage of Salesforce Lightning?

    A. Uses service side for better handling
    B. Option 4
    C. Pre-defined components to give Standard Look and Feel
    D. Option 3

  • Question 394:

    A developer needs to import customer subscription records into salesforce and attach them to existing account records. Which 2 actions should the developer take to ensure the subscription records are related to the correct account records?

    Choose 2 answers

    A. Match an external ID text field to a column in the imported file
    B. Match an auto-number field to a column in the imported file
    C. Match the name field to a column in the imported file
    D. Match the id field to a column in the imported file

  • Question 395:

    For which example task should a developer use a trigger rather than a workflow rule?

    A. To set the primary Contact on an Account record when it is saved
    B. To send an email to hiring manager when a candidate accepts a job offer.
    C. To set the Name field of an expense report record to Expense and the Date when it is saved.
    D. To notify an external system that a record has been modified.

  • Question 396:

    Which Apex collection is used to ensure that all values are unique?

    A. A Set
    B. An Enum
    C. A List
    D. An sObject

  • Question 397:

    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 Opportunity.StageName.getDescribe().getLabel()
    C. Call Opp.StageName.getDescri
    D. Call Opp.StageName.Label

  • Question 398:

    Which two statements are acceptable for a developer to use inside procedural loops?

    A. Contact con = new Contact();
    B. ContactList.remove(i);
    C. Delete contactList;
    D. Account a = [SELECT id, Name FROM account WHERE id = : con.AccountId LIMIT 1];

  • Question 399:

    Which two approaches optimize test maintenance and support future declarative configuration changes? Choose 2 answers.

    A. Create a method that queries for valid records, then call this method within test methods.
    B. Create a methods that loads valid Account records from a static resources, then call this method within test methods.
    C. Create a method that performs a callout for valid records, then call this method within test methods.
    D. Create a method that creates valid records,then call this method within test methods.

  • Question 400:

    A developer needs to provide a Visualforce page that lets users enter Product-specific details during a Sales cycle. How can this be accomplished? (Choose 2)

    A. Download a Managed Package from the AppExhange that provides a custom Visualforce page to modify.
    B. Copy the standard page and then make a new Visualforce page for Product data entry.
    C. Download an Unmanaged Package from the AppExchange that provides a custom Visualforce page to modify.
    D. Create a new Visualforce page and an Apex controller to provide Product data entry.

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