What is the DEX-450 certification exam?

The DEX-450 is a Salesforce certification exam that validates your ability to build applications programmatically on the Salesforce Platform. It covers Apex, Visualforce, Lightning Web Components, and other programmatic tools used to extend Salesforce functionality.

What are the main topics covered on the DEX-450 exam?

The exam covers Apex programming, Salesforce data model, database operations, security, error handling, Visualforce pages, Lightning Web Components, and integration patterns. It also includes testing, debugging, and best practices for developing on the Salesforce Platform.

How many questions are on the DEX-450 exam and what is the passing score?

The DEX-450 exam typically consists of 60 multiple-choice questions and you must achieve a minimum score of 65% to pass. The exam duration is usually 120 minutes.

What prerequisites should I have before taking the DEX-450 exam?

While there are no strict prerequisites, Salesforce recommends having solid knowledge of Apex, JavaScript, and web technologies. It's beneficial to have hands-on experience with Salesforce development and to have completed the Platform Developer fundamentals.

How should I prepare for the DEX-450 certification exam?

Prepare by studying official Salesforce documentation, taking Trailhead modules, practicing with Apex and Lightning Web Components, and taking practice exams. Hands-on development experience in a Salesforce org is essential for success on this challenging exam.

Free Salesforce DEX-450 Exam Questions

Practice with real exam-style questions, each with the verified correct answer and explanation.

Q1 MultipleChoice

In terms of the MVC paradigm, what are two advantages of implementing the view layer of a Salesforce application using Lightning Web Component-based development over Visualforce?

Choose 2 answers

ARich component ecosystem

BLeg capturing via the Debug Logs Setup page

CBuilt-in standard and custom set controllers

DSelf-contained and reusable units of an application

Correct Answer: A, D

Q2 MultipleChoice

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

ACreate a Dynamic Form.

BCreate a Custom Permission for the users.

CAdd a Dynamic Action to the Users' assigned Page Layouts.

CCreate a Lightning wed component.

DAdd a Dynamic Action to the Account Record Page.

Correct Answer: A, B, C, C

Q3 MultipleChoice

What are two considerations for deploying from a sandbox to production?

Choose 2 answers

AAt least 75% of Apex code must be covered by unit tests.

BUnit tests must have calls to the System.assert method.

CShould deploy during business hours to ensure feedback can be quickly addressed.

DAll triggers must have at least one line of test coverage.

Correct Answer: A, D

Q4 MultipleChoice

A developer is implementing an Apex class for a financial system. Within the class, the variables 'creditAmount' and 'debitAmount' should not be able to change once a value is assigned.

In which two ways can the developer declare the variables to ensure their value can only be assigned one time?

Choose 2 answers

AUse the static keyword and assign its value in a static initializer.

BUse the final keyword and assign its value in the class constructor.

CUse the final keyword and assign its value when declaring the variable.

DUse the static keyword and assign its value in the class constructor.

Correct Answer: B, C

Q5 MultipleChoice

A developer is tasked with building a custom Lightning Web Component (LWC) to collectContactinformation. The form will be shared among different types of users in the org. There are security requirements stating that only certain fields should beeditable and visibleto certain groups of users.

What should the developer use in their Lightning Web Component to support the security requirements?

Alightning-input-field

Bforce:inputField

Caura:input

Dui:inputField

Correct Answer: A

Explanation:

Comprehensive and Detailed Explanation From Exact Extract:

A (Correct):lightning-input-field is part ofLightning Data Service (LDS), and itautomatically enforces field-level security (FLS)and CRUD rules. This is thebest practicefor handling sensitive data in LWC forms and ensures compliance with user-level permissions.

Incorrect options:

B:force:inputField is used inAura, not in Lightning Web Components.

C/D:These are deprecated or older framework components that donotinherently enforce FLS.

This topic relates toUser Interface (25%)andsecurity in LWC development, a key concept in the PD1 exam.

Get access to all 201 verified questions with detailed answers.

Unlock All DEX-450 Questions

DEX-450 Exam Questions & Answers

Sample DEX-450 Questions

Frequently Asked Questions

Pass DEX-450 First Time