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Exam Overview
Exam Code DEX-450
Exam Name Prepare for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience
Vendor Salesforce
Total Questions 201
Last Updated 26-Oct, 2026
Free DEX-450 Questions Get Premium Access
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Free DEX-450 Practice Questions

Explore 4 free practice questions for the Salesforce DEX-450 exam and review the answers and explanations to support your preparation.

  1. Question 1

    Single answer

    A developer is creating a Lightning web component to show a list of sales records. The Sales Representative user should be able to see the commission field on each record. The Sales Assistant user should be able to see all fields on the record except the commission field. How should this be enforced so that the component works for both users without showing any errors?

    • Option A:
      Use WITH SECURITY_ENFORCED In the SOQL that fetches the data for the component.
      Correct
    • Option B:
      Use Security.stripInaccessible Le to remove fields inaccessible to the current user.
      Correct
    • Option C:
      Use Lightning Locker Service to enforce sharing rules and field-level security.
      Correct
    • Option D:
      Use Lightning Data Service to get the collection of sales records.
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: B

  2. Question 2

    Multiple answers

    Which three Salesforce resources can be accessed from a Lightning web component? Choose 3 answers 

    • Option A:
      Static resources
      Correct
    • Option B:
      All external libraries
      Correct
    • Option C:
      SVG resources
      Correct
    • Option D:
      Third-party web components
      Correct
    • Option E:
      Content asset files 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A, C, E

  3. Question 3

    Multiple answers

    What are two benefits of using declarative customizations over code? Choose 2 answer

    • Option A:
      Declarative customizations automatically update with each Salesforce release.
      Correct
    • Option B:
      Declarative customizations automatically generate test classes.
      Correct
    • Option C:
      Declarative customizations cannot generate run time errors
      Correct
    • Option D:
      Declarative customizations generally require less maintenance 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A, D

  4. Question 4

    Single answer

    A developer creates a batch Apex job to update a large number of records, and receives reports of the job timing out and not completing. What is the first step towards troubleshooting the issue?

    • Option A:
      Check the asynchronous job monitoring page to view the job status and logs.
      Correct
    • Option B:
       Check the debug logs for the batch job.
      Correct
    • Option C:
      Disable the batch job and recreate it with a smaller number of records.
      Correct
    • Option D:
      Decrease the batch size to reduce the load on the system. 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A