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 201:

    Which data type or collection of data types can SOQL statements populate or evaluate to? (Choose 3)

    A. A single sObject
    B. An integer
    C. A string
    D. A list of sObjects
    E. A Boolean

  • Question 202:

    What is considered the primary purpose for creating Apex tests?

    A. To confirm all classes and triggers compile successfully
    B. To ensure every use case of the application is covered by a test
    C. To confirm every trigger in executed at least once
    D. To guarantee at least 50% of code is covered by unit tests before it is deployed

  • Question 203:

    What are two uses for External IDs? (Choose two.)

    A. To create relationships between records imported from an external system.
    B. To create a record in a development environment with the same Salesforce ID as in another environment
    C. To identify the sObject type in Salesforce
    D. To prevent an import from creating duplicate records using Upsert

  • Question 204:

    Which two statements can a developer use to throw a custom exception of type MissingFieldValueException? Choose 2 answers.

    A. Throw Exception (new MissingFieldValueException());
    B. Throw (MissingFieldValueException, 'Problem occurred');
    C. Throw new MissingFieldValueException();
    D. Throw new MissingFieldValueException ('Problem occurred');

  • Question 205:

    A visualforce interface is created for Case Management that includes both standard and custom functionality defined in an Apex class called myControllerExtension. The visualforce page should include which attribute(s) to correctly implement controller functionality?

    A. StandardController = "case" and extensions =" myControllerExtension"
    B. Extensions=" myControllerExtension"
    C. Controller=" myControllerExtension"
    D. Controller = "case" and extensions =" myControllerExtension"

  • Question 206:

    What is a benefit of using a trigger framework?

    A. Simplifies addition of context-specific logic
    B. Increases trigger governor limits
    C. Allows functional code to be tested b
    D. Reduces trigger execution time

  • Question 207:

    How can a developer retrieve all Opportunity record type labels to populate a list collection? Choose 2 answers

    A. Obtain describe object results for the Opportunity objct.
    B. Write a for loop that extracts values from the Opportunity.RecordType.Name field.
    C. Use the global variable $RecordType and extract a list from the map.
    D. Write a SOQL for loop that iterates on the RecordType object.

  • Question 208:

    A developer wants to display all of the available record types for a Case object. The developer also wants to display the picklist values for the Case.Status field. The Case object and the Case Status field are on a custom visualforce page. Which action can the developer perform to get the record types and picklist values in the controller? Choose 2 answers

    A. Use Schema.PicklistEntry returned by Case Status getDescribe().getPicklistValues().
    B. Use Schema.RecordTypeinfo returned by Case.SObjectType getDescribe().getRecordTypelnfos()
    C. Use SOQL to query Case records in the org to get all the RecordType values available for Case.
    D. Use SOQL to query Case records in the org to get all value for the Status picklist field.

  • Question 209:

    A developer creates a Workflow Rule declaratively that updates a field on an object. An Apex update trigger exists for that object. What happens when a user updates a record?

    A. No changes are made to the data.
    B. Both the Apex Trigger and Workflow Rule are fired only once.
    C. The Workflow Rule is fired more than once.
    D. The Apex Trigger is fired more than once.

  • Question 210:

    What should a developer use to implement an automate approval process submission for case?

    A. Process builder.
    B. An assignment rules.
    C. A workflow rules.
    D. Scheduled apex.

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