PassExamDumps's CRT-450 Dumps Questions With 365 Days Free Updates

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Salesforce Certified Platform Developer I Sample Questions (Q89-Q94):

NEW QUESTION # 89
A developer is designing a new application on the Salesforce platform and wants to ensure it can support multiple tenants effectively.
Which design framework should the developer consider to ensure scalability and maintainability?

A. Agile Development
B. Model-View-Controller (MVC)
C. Flux (view, action, dispatcher, and store)
D. Waterfall Model

Answer: B

Explanation:
The correct answer is D because the Model-View-Controller (MVC) design framework is a best practice for developing scalable and maintainable applications on the Salesforce platform. The MVC framework separates the application logic into three layers: the model, which represents the data and business logic; the view, which displays the user interface and user interactions; and the controller, which mediates the communication between the model and the view. By using the MVC framework, developers can modularize their code, reuse components, and avoid tight coupling between layers. The other options are incorrect because they are not design frameworks, but rather development methodologies or architectures. Flux is an architecture for building user interfaces with React, a JavaScript library. Waterfall and Agile are methodologies for managing software development projects, with different approaches to planning, testing, and delivering software. References:
* Apex Developer Guide: MVC Architecture
* Trailhead: Apex Basics for .NET Developers
* Trailhead: Platform Developer I Certification Study Guide

NEW QUESTION # 90
Which code in a Visualforce page and/or controller might present a security vulnerability?

Answer: C

NEW QUESTION # 91
A developer Is asked to create a Visualforce page that lists the contacts owned by the current user. This component will be embedded In a Lightning page.
Without writing unnecessary code, which controller should be used for this purpose?

A. Standard controller
B. Lightning controller
C. Standard list controller
D. Custom controller

Answer: A

NEW QUESTION # 92
A developer migrated functionality from JavaScript Remoting to a Lightning web component and wants to use the existing getOpportunities() method to provide data.
What to do now?

A. The method must return a JSON Object.
B. The method must be decorated with @AuraEnabled.
C. The method must return a String of a serialized JSON Array.
D. The method must be decorated with (cacheable=true).

Answer: B

Explanation:
The method must be decorated with @AuraEnabled to make it accessible from a Lightning web component.
The @AuraEnabled annotation enables client- and server-side access to an Apex controller method. Without this annotation, the Lightning web component can't call the Apex method. The cacheable=true attribute is optional and indicates whether the method can be cached by the client. The method can return any data type that can be serialized into JSON, such as a JSON object, a JSON array, a primitive type, or a custom type. The method does not need to return a string of a serialized JSON array, as the framework handles the serialization and deserialization automatically. References:
* Lightning Web Components Developer Guide: Call Apex Methods, pages 1-2
* Apex Developer Guide: Annotation AuraEnabled, page 1
* Trailhead: Platform Developer I Certification Study Guide: Lightning Web Components, unit 5

NEW QUESTION # 93
Which two settings must be defined in order to update a record of a junction object? Choose 2 answers

A. Read access on the primary relationship
B. Read/Write access on the primary relationship
C. Read/Write access on the secondary relationship
D. Read/Write access on the junction object

Answer: B,C

NEW QUESTION # 94
......

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PASSEXAMDUMPS'S CRT-450 DUMPS QUESTIONS WITH 365 DAYS FREE UPDATES

PassExamDumps's CRT-450 Dumps Questions With 365 Days Free Updates