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
    :May 29, 2026

Salesforce DEX-450 Online Questions & Answers

  • Question 251:

    A developer is asked to create a PDF quote document formatted using the company's branding guidelines, and automatically save it to the Opportunity record. Which two ways should a developer create this functionality? (Choose two.)

    A. Install an application from the AppExchange to generate documents.
    B. Create a Visualforce page with custom styling.
    C. Create an email template and use it in Process Builder.
    D. Create a visual flow that implements the company's formatting.

  • Question 252:

    What declarative method helps ensure quality data? Choose 3 answers

    A. Page layouts
    B. Lookup filters
    C. Exception handling
    D. Workflow alerts
    E. Validation rules

  • Question 253:

    An after trigger on the account object performs a DML update operation on all of the child opportunities of an account. There are no active triggers on the opportunity object, yet a "maximum trigger depth exceeded" error occurs in certain situation. Which two reasons possibly explain the account trigger firing recursively? choose 2 answers

    A. Changes are being made to the account during criteria based sharing evaluation
    B. Changes are being made to the account during an unrelated parallel save operation
    C. Changes to opportunities are causing cross-object workflow field updates to be made on the account
    D. Changes to opportunities are causing roll-up summary fields to update on the account

  • Question 254:

    When an Account's custom picklist field called Customer Sentiment is changed to a value of "Confused", a new related Case should automatically be created. Which two methods should a developer use to create this case? (Choose two.)

    A. Process Builder
    B. Apex Trigger
    C. Custom Button
    D. Workflow Rule

  • Question 255:

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

  • Question 256:

    How can a custom type be identified as unique when added to a Set?

    A. Methods in the class must be static
    B. The class must implement the Equals and Hashcode methods
    C. Methods in the class must be global
    D. The class must have a method with the @InvocableMethod annotation

  • Question 257:

    Where can debug log filter settings be set?Choose 2 answers

    A. The Filters link by the monitored user's name within the web UI.
    B. The Show More link on the debug log's record.
    C. On the monitored user's name.
    D. The Log Filters tab on a class or trigger detail page.

  • Question 258:

    A developer needs to include a Visualforce page in the detail section of a page layout for the Account object, but does not see the page as an available option in the Page Layout Editor. Which attribute must the developer include in the tag to ensure the Visualforce page can be embedded in a page layout?

    A. Action="AccountId"
    B. StandardController="Account"
    C. Extensions="AccountController"
    D. Controller="Account"

  • Question 259:

    A visualforce page uses the contact standard controller. How can a developer display the name from the parent account record on the page?

    A. Use SOQL syntax to find the related accounts name field
    B. Use the {!contact.account.name} merge field syntax
    C. Use an additional standard controller for accounts
    D. Use additional apex logic within the controller to query for the name field

  • Question 260:

    On a Visualforce page with a custom controller, how should a developer retrieve a record by using an ID that is passed on the URL?

    A. Use the constructor method for the controller.
    B. Use the $Action.View method in the Visualforce page.
    C. Create a new PageReference object with the Id.
    D. Use the tag in the Visualforce page.

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