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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q109-Q114):

NEW QUESTION # 109
How can a developer efficiently incorporate multiple JavaScript libraries in an Aura component?

A. Use CDNs with script attributes.
B. Use JavaScript remoting and script tags.
C. Join multiple assets from a static resource.
D. Implement the libraries in separate helper files.

Answer: C

Explanation:
For incorporating multiple JavaScript libraries in Aura components, the best practice is to join multiple assets into a single static resource. This approach is efficient and avoids issues with asynchronous loading and potential conflicts between libraries. Aura Components Developer Guide - Using External JavaScript Libraries

NEW QUESTION # 110
How should a developer assert that a trigger with an asynchronous process has successfully run?

A. Insert records into Salesforce, use seeAllData=true, then perform assertions.
B. Create all test data in the test class, use system. runs {} to invoke the trigger, then perform assertions.
C. Create all test data, use future in the rest class, then perform assertions.
D. Create all test data in the test class, invoke Test.startTest{} and Test.etopTaat {} and then perform assertions.

Answer: D

Explanation:
Use Test.startTest() and Test.stopTest(). These methods ensure asynchronous code runs within test execution and allows for accurate assertions.

NEW QUESTION # 111
The use of the transient keyword in Visualforce page controllers helps with which common performance issue?

A. Reduces load times
B. Improves query performance
C. Reduces view state
D. Improves page transfers

Answer: C

Explanation:
The transient keyword in Visualforce page controllers marks variables that should not be part of the view state, which can significantly reduce the size of the view state. This can help avoid view state limit errors and improve page performance because a smaller view state requires less time to send to the client.

NEW QUESTION # 112
Refer to the following code snippet:

A developer created a JavaScript function as part of a Lightning web component (LWC) that surfaces information about Leads by wire calling geyFetchLeadList whencertain criteria are met. Which three changes should the developer implement in the Apex class above to ensure the LWC can display data efficiently while preserving security? Choose 3 answers

A. Annotate the Apex method with @AuraEnabled.
B. Annotate the Apex method with @AuraEnabled(Cacheable=True).
C. Implement the with sharing keyword in the class declaration.
D. Use the WZ E D clause within the SOQL query.
E. Implement the with keyword in the class declaration.

Answer: A,B,C

Explanation:
The Apex class needs to have the method annotated with @AuraEnabled to expose it to the LWC. The 'with sharing' keyword ensures that the data access is enforced according to the user's permissions. @AuraEnabled(cacheable=true) allows client-side caching for improved performance.
@AuraEnabled Annotation: Apex Developer Guide
Enforcing Sharing Rules: Apex Developer Guide

NEW QUESTION # 113
A developer used custom settings to store some configuration data that changes occasionally. However, tests are now Failing in some of the sandboxes that were recently refreshed.
What should be done to eliminate this issue going forward?

A. Set the setting type on the custom setting to List.
B. Set the setting type on the custom setting to Hierarchy.
C. Replace custom settings with static resources.
D. Replace custom settings with custom metadata.

Answer: D

Explanation:
Replacing custom settings with custom metadata types is a good solution to ensure that test data is consistent across environments. Custom metadata types are deployable, and their records are available in test methods by default, unlike List Custom Settings which need to be manually recreated in each environment after a refresh.

NEW QUESTION # 114
......

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