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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q92-Q97):

NEW QUESTION # 92
Consider the above trigger intended to assign the Account to the manager of the Account's region, Which two changes should a developer make in this trigger to adhere to best practices?

A. Remove the last line updating accountList as It Is not needed.
B. Move the Region__c query to outside the loop.
C. Use a Map accountMap instead of List accountList.
D. Use a Map to cache the results of the Region._c query by Id.

Answer: A,B

Explanation:
Moving the SOQL query outside the loop prevents it from being executed multiple times, which can lead to hitting governor limits. The last line updating the accountList is indeed needed to save the changes made to the Account records, so removing it is not recommended. Instead, the query should be moved outside the loop and records should be collected in a map for efficiency, which is not one of the provided options. Reference:
Apex Developer Guide - Best Practices for Apex

NEW QUESTION # 93
A Salesforce Platform Developer is leading a team that is tasked with deploying a new application to production. The team has used source-driven development, and they want to ensure that the application is deployed successfully.
What tool or mechanism should be used to verify that the deployment is successful?

A. Salesforce Inspector
B. Force.com Migration Tool
C. Salesforce DX CLI
D. Apex Test Execution

Answer: C

Explanation:
The Salesforce CLI with Salesforce DX can be used to execute and verify the deployment of metadata to production. It allows the developer to run specified tests and ensure that the deployment meets all required conditions for success.

NEW QUESTION # 94
A developer creates a Lightning web component to allow a Contact to be quickly entered. However, error messages are not displayed.

Which component should the developer add to the form to display error messages?

A. lightning-messages
B. apex:messages
C. lightning-error
D. aura:messages

Answer: A

Explanation:
The correct answer is B, lightning-messages. This Lightning Web Components (LWC) service component provides a way to display error messages that are generated during the processing of lightning-input-field components within a lightning-record-edit-form.
Display Error Messages

NEW QUESTION # 95
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 metadata type
B. Custom list setting
C. Custom object
D. Custom hierarchy setting

Answer: A

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 # 96
A Visuzlforce page loads slowly due to the large amount of data it displays.
Which strategy can a developer use to improve the performance?

A. Use an <apex:actionPollar) in the page to load all of the data asynchronously.
B. Use lazy loading to load the data on demand, instead of in the controller's constructor.
C. Use Javascript to move data processing to the browser instead of the controller.
D. Use the transient keyword for the List variables used in the custom controller.

Answer: B

Explanation:
Lazy loading is a strategy to improve the performance of a Visualforce page that loads a large amount of data. By loading the data on demand, rather than in the controller's constructor, the initial page load is faster, and additional data is only loaded when necessary.

NEW QUESTION # 97
......

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