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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Objectives
Topic 1: Testing and Deployment	- Testing strategies 1. Test data creation and mocking 2. Code coverage and quality practices - Deployment lifecycle 1. Change sets and deployment tools 2. Version control and CI/CD concepts
Topic 2: Data Modeling and Management	- Data access and security 1. Sharing rules and Apex-managed sharing 2. Security enforcement in Apex - Advanced data modeling 1. Complex relationships and schema design 2. Large data volume considerations
Topic 3: Application Development	- Asynchronous processing 1. Batch Apex and Queueable Apex 2. Scheduled Apex 3. Future methods and limits considerations - Advanced Apex programming 1. Exception handling and debugging strategies 2. Dynamic Apex and metadata-driven development 3. Apex design patterns and best practices
Topic 4: Integration and APIs	- External system integration 1. Callouts from Apex 2. REST and SOAP API usage - Platform events and messaging 1. Change Data Capture concepts 2. Event-driven architecture

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q138-Q143):

NEW QUESTION # 138
An org records customer order information in a custom object, ordar__c, that has fields for the shipping address. A developer is tasked with adding code to calculate shipping charges on an order, based on a flat percentage rate associated with the region of the shipping address.
What should the developer use to store the rates by region, so that when the changes are deployed to production no additional steps are needed for the calculation to work?

A. Custom object
B. Custom metadata type
C. Custom hierarchy setting
D. Custom list setting

Answer: B

Explanation:
Custom metadata types are ideal for storing configuration data such as shipping rates by region. These rates can be deployed to production without additional steps and can be queried in Apex, allowing the calculations to work immediately post-deployment.

NEW QUESTION # 139
A developer is creating a page in App Builder that will be used in the Salesforce mobile app.
Which two practices should the developer follow to ensure the page operates with optimal performance?
Choose 2 answers

A. Limit 25 fields on the record detail page.
B. Limit five visible components on the page.
C. Limit the number of Tabs and Accordion components.
D. Analyze the page with Performance Analysis for App Builder.

Answer: C,D

Explanation:
For mobile app pages in App Builder, best practices include limiting the number of heavy components like Tabs and Accordion because they can negatively impact performance due to increased client-side processing and data transfer. Also, using Performance Analysis in App Builder helps in identifying components that may slow down page performance and provides recommendations for improvements. Reference:
Optimize Performance in the Salesforce Mobile App
Lightning App Builder Performance Analysis

NEW QUESTION # 140
A developer created and tested a Visualforce page in their developer sandbox, but now receives reports that user encounter view state errors when using it in production.
What should the developer ensure to correct these errors?

A. Ensure profiles have access to the Visualforce page.
B. Ensure properties are marked as private,
C. Ensure variables are marked as transient.
D. Ensure queries do net exceed governor limits,

Answer: C

Explanation:
The view state in Visualforce represents the state of the page - including the components, field values, and controller state. This error usually occurs when the page's view state becomes too large. To resolve this issue:
C . Ensure variables are marked as transient: The transient keyword in Apex can be used to declare instance variables that should not be part of the view state and therefore not be saved. This is especially useful for large data that does not need to be maintained across postbacks.
Marking properties as private (Option B) or ensuring queries do not exceed governor limits (Option A) might be best practices, but they do not directly impact the view state size. Ensuring profiles have access to the Visualforce page (Option D) is a matter of visibility and access, not related to view state errors.
Salesforce Developer Documentation on View State: Visualforce View State

NEW QUESTION # 141
Refer to the following code snippets:
A developer is experiencing issues with a Lightning web component. The component must surface information about Opportunities owned by the currently logged-in user.

When the component is rendered, the following message is displayed: "Error retrieving data". Which modification should be implemented to the Apex class to overcome the issue?

A. Edit the code to use the w. cut sharing keyword in the Apex class.
B. Ensure the OWD for the Opportunity object is Public.
C. Use the Continuation=true attribute in the Apex method.
D. Use the Cacheable=true attribute in the Apex method,

Answer: D

Explanation:
The @AuraEnabled(cacheable=true) attribute allows caching of method results on the client side, reducing server trips for already fetched data, which is useful for read-only data.

NEW QUESTION # 142
Universal Containers has an Apex trigger on Account that creates an Account Plan record when an Account is marked as a Customer.
Recently a record-triggered flow was added so that whenever an Account is marked as a Customer, a "Customer Since' date field is updated with today's date. Since the addition of the flow, two Account Plan records are created whenever the Account is marked as a Customer.
What might cause this to happen?

A. The flow is configured to use an "Update Records' element.
B. The flow is configured to evaluate when a record is created and every time it is edited.
C. The Apex trigger is not bulk safe and calls insert inside of a for loop.
D. The Apex trigger does not use a static variable to ensure it only fires once.

Answer: A

Explanation:
If a flow is configured to evaluate when a record is created and every time it's edited, and an Apex trigger also fires upon the same conditions, it could result in duplicate operations. In this case, two Account Plan records are created because both the flow and the trigger execute upon the Account being marked as a Customer.

NEW QUESTION # 143
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