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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Integration	15%	- Platform Events and Change Data Capture - REST and SOAP web services (Apex callouts) - Named Credentials and authentication - External Services and Connect REST API
User Interface	18%	- Lightning Web Components (LWC) advanced features - Visualforce advanced controllers - Aura Components - Lightning Data Service
Testing, Debugging, and Deployment	15%	- Deployment tools (SFDX, Metadata API) - Debugging and performance profiling - Test data strategies and mocking - Apex unit testing best practices
Logic and Process Automation	22%	- Dynamic Apex and SOQL/SOSL - Invocable Actions and Platform Events - Advanced Apex programming - Asynchronous Apex (Batch, Queueable, Future, Scheduled)
Architecture	18%	- Governor limits and bulkification - Namespace and package management - Design patterns and Apex trigger frameworks - Apex Enterprise Patterns
Data Modeling	12%	- Large data volumes considerations - External objects and data sources - Advanced object relationships and data modeling

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q77-Q82):

NEW QUESTION # 77
A company wants to incorporate a third-party weh service to set the Address fields when an Account is inserted, if they have not already been set.
What is the optimal way to achieve this?

A. Create an Apex trigger, execute a Queueable job from it, and make a callout from the Queueable job.
B. Create a Process, execute a Quaueable job from it, and make a callout from the Queueable job.
C. Create a Before Save Flow, execute a Queueable job from it, and make a callout from the Queusable job.
D. Create a Workflow Rule, execute a Queueable job from it, and make a callout from the Queueable job.

Answer: A

Explanation:
To make a callout to set the Address fields when an Account is inserted without violating the Salesforce limit against callouts from triggers, a developer can use a trigger to execute a Queueable job. The Queueable job can then safely make the callout.

NEW QUESTION # 78
Which technique can run custom logic when a Lightning web component is loaded?

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

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 # 79
A developer is writing code that requires making callouts to an external web service.
Which scenario necessitates that the callout be made in an asynchronous method?

A. Over 10 callouts will be made in a single transaction.
B. The callouts will be made in an Apex trigger.
C. The callouts will be made using the REST APL.
D. The callout could take longer than 60 seconds to complete.

Answer: B

Explanation:
Callouts cannot be made from a synchronous context such as an Apex trigger because they might exceed the maximum execution time, leading to timeouts. Asynchronous methods, such as future or Queueable, are required to handle callouts from triggers.

NEW QUESTION # 80
A company recently deployed a Visualforce page with a custom controller that has a data grid of information about Opportunities in the org. Users report that they receive a "Maximum view state size limit" error message under certain conditions.
According to Visualforce best practice, which three actions should the developer take to reduce the view state?
Choose 3 answers

A. Use filters and pagination to reduce the amount of data.
B. Use the transient keyword in the Apex controller for variables that do not maintain state.
C. Use the private keyword in the controller for variables,
D. Use the final keyword in the controller for variables that will not change.
E. Refine any SOQL queries to return only data relevant to the page.

Answer: A,B,E

NEW QUESTION # 81
A developer created a Lightning web component for the Account record page that displays the five most recently contacted Contacts for an Account. The Apex method, Contacts, returns a list of Contacts and will be wired to a property in the component.

Which two lines must change in the above code to make the Apex method able to be wired? Choose 2 answers

A. Add @AuraEnabled {cacheable=trues) to line 08.
B. Add @AuraEnabled {cacheable=true) to line 03.
C. Add public to line 04.
D. Remove private from line 09.

Answer: A,D

Explanation:
To make an Apex method callable from a Lightning Web Component, you need to annotate the method with @AuraEnabled and mark it as cacheable if it's only retrieving data without modifying it. Additionally, the method must be public to be accessible from the component.
Line 04: Needs @AuraEnabled(cacheable=true) to allow the method to be called from the Lightning Web Component and indicate that the method doesn't modify any data, making it suitable for caching.
Line 09: The method getFiveMostRecent should not be private because private methods cannot be called from a Lightning Web Component. Changing it to public (or default, which is equivalent to public within the same namespace) is required.
Lightning Web Components and Salesforce Data: Developer Documentation
@AuraEnabled Annotation: Apex Developer Guide

NEW QUESTION # 82
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