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 91:

    Which requirement needs to be implemented by using standard workflow instead of Process Builder? Choose 2 answers

    A. Create activities at multiple intervals.
    B. Send an outbound message without Apex code.
    C. Copy an account address to its contacts.
    D. Submit a contract for approval.

  • Question 92:

    Which resource can be included in a Lightning Component bundle? Choose 2 answers

    A. Apex class
    B. Adobe Flash
    C. JavaScript
    D. Documentation

  • Question 93:

    Which two number expressions evaluate correctly? (Choose two.)

    A. Double d = 3.14159;
    B. Integer I = 3.14159;
    C. Decimal d = 3.14159;
    D. Long l = 3.14159;

  • Question 94:

    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 relies on existing data in the database
    C. The test method use a try/catch block
    D. The test method calls an @future method.

  • Question 95:

    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 REST API and ApexTestRun method
    B. The Apex Test Execution page in Salesforce Setup.
    C. The Test menu in the Developer Console.
    D. The Run Tests page in Salesforce Setup.

  • Question 96:

    In Lightning component framework, which resource can be used to fire events? Choose 2 answers.

    A. Third-party Javascript code
    B. Javascript controller actions
    C. Visualforce controller actions
    D. Third-party web service code

  • Question 97:

    How should a developer create a new custom exception class?

    A. public class CustomException extends Exception{}
    B. CustomException ex = new (CustomException)Exception();
    C. public class CustomException implements Exception{}
    D. (Exception)CustomException ex = new Exception();

  • Question 98:

    A developer writes a before insert trigger.How can the developer access the incoming records in the trigger body?

    A. By accessing the Trigger.new context variable.
    B. By accessing the Trigger.newRecords context variable.
    C. By accessing the Trigger.newMap context variable.
    D. By accessing the Tripper.newList context variable.

  • Question 99:

    How many level of child records can be returned in a single SOQL query from one parent object?

    A. 1
    B. 3
    C. 5
    D. 7

  • Question 100:

    On which object can an administrator create a roll-up summary field?

    A. Any object that is on the master side of a master-detail relationship.
    B. Any object that is on the parent side of a lookup relationship.
    C. Any object that is on the detail side of a master-detail relationship.
    D. Any object that is on the child side of a lookup relationship.

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