Free Salesforce DEX-450 Exam Questions

Become Salesforce Certified with updated DEX-450 exam questions and correct answers

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Total 387 Questions | Updated On: Apr 27, 2026

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Question 1

A developer needs an Apex method that can process Account or Contact records. Which method signature should the developer use?

A : Public void doWork(Record theRecord)

B : Public void doWork(sObject theRecord)

C : Public void doWork(Account Contact)

D : Public void doWork(Account || Contatc)

Answer: B

Question 2

A developer must create aShippingCalculatorclass that cannot be instantiated and must include a working default implementation of acalculatemethod, that sub-classes can override. What is the correct implementation of theShippingCalculatorclass?

A : Public abstract class ShippingCalculator {public override calculate() { /*implementation*/ }}

B : Public abstract class ShippingCalculator {public virtual void calculate() { /*implementation*/ }}

C : Public abstract class ShippingCalculator {public abstract calculate() { /*implementation*/ }}

D : Public abstract class ShippingCalculator {public void calculate() { /*implementation*/ }}

Answer: B

Question 3

A developer must provide a custom user interface when users edit a Contact. Users must be able to use the interface in Salesforce Classic and Lightning Experience.

What should the developer do to provide the custom user interface?

A : Override the Contact-s Edit button with a Visualforce page in Salesforce Classic and a Lightningcomponent in Lightning Experience.

B : Override the Contact-s Edit button with a Visualforce page in Salesforce Classic and a Lightning page inLightning Experience.

C : Override the Contact-s Edit button with a Lightning component in Salesforce Classic and a Lightningcomponent in Lightning Experience

D : Override the Contact-s Edit button with a Lightning page in Salesforce Classic and a Visualforce page in Lightning Experience.

Answer: A

Question 4

Which two are phases in the Salesforce Application Event propagation framework? Choose

2 answers

A : Bubble

B : Default

C : Capture

Answer: B,C

Question 5

Cloud kicks has a muli-screen flow its call center agents use when handling inbound service desk calls.

At one of the steps in the flow, the agents should be presented with a list of order number and dates that are retrieved from an external odrer management system in real time and displayed on the screen.

What shuold a developer use to satisfy this requirement?

A : An invocae method

B : An apex REST class

C : An outbound message

D : An Apex Controller

Answer: B

Page: 1 / 78

Total 387 Questions | Updated On: Apr 27, 2026

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