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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Performance and Data Management	18%	- Governor limits optimization and best practices - Optimize queries and handle large data volumes - Data modeling and complex data operations
Topic 2: User Interface Development	20%	- Implement advanced Visualforce functionality - Optimize UI performance and usability - Build complex Lightning Web Components and Aura Components
Topic 3: Logic, Process Automation, and Integration	27%	- Advanced Apex programming and transaction management - REST/SOAP API, Platform Events, and external integrations - Complex business logic and automation design - Asynchronous Apex: future, queueable, batch, scheduled
Topic 4: Advanced Developer Fundamentals	15%	- Apply security best practices in development - Design and maintain scalable, reusable code - Work with localization, multi-currency, and global features
Topic 5: Testing, Debugging, and Deployment	20%	- Deployment strategies, CI/CD, and change management - Advanced testing strategies and test frameworks - Debugging and error handling across layers

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q183-Q188):

NEW QUESTION # 183
What is the best practice to initialize a Vizualforce page in a test class?

A. Use controller. currentPage. setPage (MyTastfage) ;
B. Use Test. setCurrentPage MyTestPags;
C. Use Test. setCurrentPage (Page. MyTeatPage);
D. Use Test. currantPage .getParamatars put (MyTaestPaga) ;

Answer: C

Explanation:
Test.setCurrentPage(Page.MyTestPage) is used to set the context to a Visualforce page in tests, allowing you to simulate a page request in a test method.

NEW QUESTION # 184
Universal Containers wants to notify an external system, in the event that an unhandled exception occurs, by publishing a custom event using Apex.
What is the appropriate publish/subscribe logic to meet this requirement?

A. Publish the error event using the Eventrus.publish() method and have the external system subscribe to the event using CometD.
B. Have the external system subscribe to the event channel. No publishing is necessary.
C. Publish the error event using the addError () method and have the external system subscribe to the event using Comet
D. Publish the error event using the addError () method and write a trigger to subscribe to the event and notify the external system.

Answer: A

Explanation:
When an unhandled exception occurs, publishing a custom platform event using EventBus.publish() method is the appropriate way. The external system can then subscribe to this event using technologies like CometD to receive notifications. Publish and Subscribe to Platform Events

NEW QUESTION # 185
Universal Containers needs to integrate with their own, existing, internal custom web application. The web application accepts JSON payloads, resizes product images, and sends the resized images back to Salesforce.
What should the developer use to implement this integration?

A. An Apex trigger that calls an @future method that allows callouts
B. A flow with an outbound message that contains a session ID
C. A platform event that makes a callout to the web application
D. A flow that calls an @future method that allows callouts

Answer: A

Explanation:
In a scenario where an integration requires making a callout to an external web application, Apex is often used to perform callouts. The callout must be asynchronous when being made from a trigger because a callout cannot be made from a synchronous operation like a trigger due to the possibility of long-running transactions.
Option A (An Apex trigger that calls an @future method that allows callouts) is correct because it enables the trigger to perform an asynchronous callout to the external web application, which is necessary for sending JSON payloads and receiving the resized images.
Options B, C, and D do not fit the requirement as well as option A because platform events and flows are typically not used for making direct callouts to external systems in the context described.
Apex Developer Guide: Apex Web Services and Callouts

NEW QUESTION # 186
What is a benefit of JavaScript remoting over Visualforce Remote Objects?

A. Does not require any Apex code
B. Allows for specified re-render targets
C. Supports complex server-side application logic
D. Does not require any JavaScript code

Answer: C

Explanation:
JavaScript remoting in Visualforce allows for the execution of complex server-side application logic without the need to refresh the entire page, providing a more dynamic user experience. It supports more complex operations than Visualforce Remote Objects, which are intended for basic CRUD operations.

NEW QUESTION # 187
A developer needs to store variables to control the style and behavior of a Lightning Web Component.
Which feature can be used to ensure that the variables are testable in both Production and all Sandboxes?

A. Custom variable
B. Custom setting
C. Custom object
D. Custom metadata

Answer: D

Explanation:
Custom metadata types are the best feature for storing variables that control style and behavior of a Lightning Web Component. Unlike custom settings, custom metadata is deployable and testable in both Production and all Sandboxes.

NEW QUESTION # 188
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