Higher Test Marks with Free Online DEX-450 Exam Practice

Assess the CertsIQ’s updated DEX-450 exam questions for free online practice of your Programmatic Development using Apex and Visualforce in Lightning Experience (WI25) test. Our DEX450 dumps questions will enhance your chances of passing the Salesforce Platform Developer I certification exam with higher marks.

Exam Code: DEX-450
Exam Questions: 387
Programmatic Development using Apex and Visualforce in Lightning Experience (WI25)
Updated: 21 Mar, 2026
Question 1

Get Cloudy Consulting (GCC) has a multitude of servers that host its customers' websites. GCC wants to provide a servers status page that is always on display in its call center. It should update in real time with any changes made to any servers. To accommodate this on the server side, a developer created a server Update platform event.
The developer is working on a Lightning web component to display the information.

Options :
Answer: A

Question 2

Universal Container wants Opportunities to no longer be editable when itreaches the Closed/Won stage.
Which two strategies can a developer use to accomplish this?
Choose2 answer

Options :
Answer: A,B

Question 3

A developer must troubleshoot to pinpoint the causes of performance issues when a custom page loads in their org. Which tool should the developer use to troubleshoot?

Options :
Answer: D

Question 4

A developer wrote Apex code that calls out to an external system. How should a developer write the test to provide test coverage?

Options :
Answer: B

Question 5

A developer needs to allow users to complete a form on an Account record that will create a record for a custom object. The form needs to display different fields depending on the user's job role. The functionality should only be available to a small group of users.
Which three things should the developer do to satisfy these requirements?
Choose 3 answers

Options :
Answer: A,B

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