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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q130-Q135):

NEW QUESTION # 130
Which technique can run custom logic when a Lightning web component is loaded?

A. Use the randersd loack { } method.
B. Use the connectedCallback { } method.
C. Call 52. engqueusiction and pass in the method to call.
D. Use an <aura:handler> init event to call a function.

Answer: B

Explanation:
The connectedCallback() lifecycle hook in Lightning Web Components (LWC) is used to perform logic after a component is inserted into the DOM, making it the ideal place to execute custom logic when the component is loaded.

NEW QUESTION # 131
A company has a custom object, Order__c, that has a custom picklist field, Status__c, with values of `"New', `"In Progress', or `"Fulfilled' and a lookup field, Contact__c, to Contact.
Which SOQL query will return a unique list of all the Contact records that have no `"Fulfilled' Orders?

A. SELECT Contact__c FROM Order__c WHERE Id NOT IN (SELECT Id FROM Order__c Where Status__c = 'Fulfilled')
B. SELECT Id FROM Contact WHERE Id NOT IN (SELECT Id FROM Order__c WHERE Status__c = 'Fulfilled')
C. SELECT Contact__c FROM Order__c WHERE Status__c <> 'Fulfilled'
D. SELECT Id FROM Contact WHERE Id NOT IN (SELECT Contact__c FROM Order__c WHERE Status__c = 'Fulfilled')

Answer: D

Explanation:
The correct SOQL query to return a unique list of Contact records that have no 'Fulfilled' Orders is one that selects Ids from the Contact object where the Contact Id is not in the set of Contact Ids related to 'Fulfilled' Orders. This is done by a subquery that selects the Contact__c field from the Order__c records where the Status__c is 'Fulfilled'.

NEW QUESTION # 132
An org has a requirement that addresses on Contacts and Accounts should be normalized to a company standard by Apex code any time that they are saved.
What is the optimal way to implement this?

A. Apex trigger on Account that calls the Contact trigger to normalize the address
B. Apex triggers on Contact and Account that call a helper class to normalize the address
C. Apex triggers on Contact and Account that normalize the address
D. Apex trigger on Contact that calls the Account trigger to normalize the address

Answer: B

Explanation:
Apex triggers on Contact and Account with a helper class is the best practice for code reuse and maintaining clean trigger logic.

NEW QUESTION # 133
How can a developer efficiently incorporate multiple JavaScript libraries in an Aura component?

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

Answer: A

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 # 134
A developer wrote the following method to find all the test accounts in the org:

What should be used to fix this failing test?

A. Teat.loadData to set up expected data
B. Test. fixsdSsarchReaulta [) method to set up expected data
C. @isTest (SeeAllData=true) to access org data for the test
D. @testsetup method to set up expected data

Answer: B

Explanation:
https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_SOSL.htm

NEW QUESTION # 135
......

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