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Free Salesforce DEX-450 Exam Questions

Absolute Free DEX-450 Exam Practice for Comprehensive Preparation 

  • Salesforce DEX-450 Exam Questions
  • Provided By: Salesforce
  • Exam: Programmatic Development using Apex and Visualforce in Lightning Experience (WI25)
  • Certification: Salesforce Platform Developer I
  • Total Questions: 387
  • Updated On: Sep 23, 2026
  • Rated: 4.9 |
  • Online Users: 774
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  • Question 1
    • A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what defined for payments in the PaymentProcessor interface. public interface PaymentProcessor { void pay(Decimal amount); } Which is the correct implementation to use the PaymentProcessor interface class?

      Answer: B
  • Question 2
    • In the Lightning UI, where should a developer look to find information about a Paused Flow Interview?


      Answer: B
  • Question 3
    • An Opportunity needs to have an amount rolled up from a custom object that is not in a master-detail relationship.
      How can this be achieved?

      Answer: C
  • Question 4
    • What writing an Apex class, a developer warts to make sure thai all functionality being developed Is handled
      as specified by the requirements.
      Which approach should the developer use to be sure that the Apex class is working according tospecification?

      Answer: A
  • Question 5
    • A developer created these three Rollup Summary fields in the custom object, Project_ct,

      Other-Image-22e72623c-7933-4a63-ad4b-6109b9ccd8d2

      The developer is asked to create a new field that shows the ratio between rejected and approved timesheets for a given project.
      Which should the developer use to Implement the business requirement in order to minimize maintenance overhead?

      Answer: B
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