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The Programmatic Development using Apex and Visualforce in Lightning Experience (DEX-450) exam questions are real, valid, and verified by Salesforce DEX-450 certification exam trainers. They work together and put all their efforts to ensure the top standard and relevancy of DEX-450 Exam Dumps all the time. So we can say that with Salesforce DEX-450 exam questions you will get everything that you need to make the DEX-450 exam preparation simple, smart, and successful.

To be eligible for the Salesforce DEX-450 certification exam, candidates must have a solid understanding of object-oriented programming concepts, data modeling, and database design. They must also have experience building custom applications on the Salesforce platform using Apex and Visualforce. Candidates should also have experience with Salesforce Lightning Experience and its components, including Lightning App Builder, Lightning Data Service, and Lightning Connect.

The DEX-450 Certification Exam consists of 60 multiple-choice questions that need to be completed within 105 minutes. To pass the exam, candidates need to score at least 65%. DEX-450 exam can be taken in-person at a testing center or remotely online.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q155-Q160):

NEW QUESTION # 155
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

A. Built-in standard and custom set controllers
B. Log capturing via the Debug Logs Setup page
C. Self-contained and reusable units of an application
D. Rich component ecosystem

Answer: C,D

Explanation:
When comparing Lightning Web Components (LWC) with Visualforce for the View layer in the MVC paradigm, several advantages stand out.
Option A: Self-contained and reusable units of an application
Correct Advantage.
LWCs are built using modular components that encapsulate their own structure, style, and behavior.
Components can be reused across different parts of the application, promoting consistency and reducing development time.
This modularity allows for better maintainability and scalability.
LWC leverages modern web standards and offers a rich set of base components provided by Salesforce.
Developers can use pre-built components for common functionalities, speeding up development.
The ecosystem is continuously expanding, with contributions from Salesforce and the community.
Debug logs are a feature of Salesforce that applies to both Visualforce and LWC.
This is not an advantage specific to LWC in the context of the View layer.
Option D: Built-in standard and custom set controllers
Advantage of Visualforce.
Visualforce provides built-in standard controllers and allows for custom controllers and controller extensions.
In LWC, controllers are written in JavaScript, and data access is typically done via Apex methods.
This is an area where Visualforce has more built-in support.
Conclusion:
The two advantages of using Lightning Web Components over Visualforce in the View layer are:
Option A: Self-contained and reusable units of an application.
Option C: Rich component ecosystem.
These advantages stem from LWC's modern architecture and adherence to web standards, enabling more efficient and modular development.
Reference:
Lightning Web Components Basics
Component-Based Framework
Option C: Rich component ecosystem
Correct Advantage.
Base Components
Lightning Web Components Open Source
Options Not Applicable:
Option B: Log capturing via the Debug Logs Setup page
Not a View Layer Advantage.

NEW QUESTION # 156
Which is a valid Apex assignment?

A. Integer x = 5.0;
B. Integer x = 5*1.0;
C. Float x = 5.0;
D. Double x = 5;

Answer: D

NEW QUESTION # 157
Universal Containers stores the availability date on each Line Item of an Order and Orders are only shipped when all of the Line Items are avaible. Which method should be used to calculate the estimated ship date for an Order?

A. Use a DAYS formula on each of the availability date fields and a COUNT Roll-Up Summary field on the Order.
B. Use a Max Roll-Up Summary field on the Latest availability date fields.
C. Use a LATEST formula on each of the latest availability date fields.
D. Use a CEILING formula on each of the Latest availability date fields.

Answer: B

NEW QUESTION # 158
A developer has JavaScript code that needs to be called by controller functions in multiple Aura components by extending a new abstract component.
Which resource in the abstract Aura component bundle allows the developer to achieve this?

A. renderer.js
B. superRender.js
C. controllers
D. helper.js

Answer: D

NEW QUESTION # 159
Considering the following code snippet:

When the code executes a DML exception is thrown.
How should the developer modify the code to ensure exceptions are handled gracefully?

A. Implement the upsert DML statement.
B. Remove null items from the list if Accounts.
C. Implement a try/catch block for the DML.
D. Implement Change Data Capture

Answer: C

NEW QUESTION # 160
......

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