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Salesforce Plat-Dev-301 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Testing, Debugging, and Deployment15%- Test data strategies and mocking
- Debugging and performance profiling
- Deployment tools (SFDX, Metadata API)
- Apex unit testing best practices
Topic 2: Logic and Process Automation22%- Invocable Actions and Platform Events
- Advanced Apex programming
- Dynamic Apex and SOQL/SOSL
- Asynchronous Apex (Batch, Queueable, Future, Scheduled)
Topic 3: Architecture18%- Governor limits and bulkification
- Design patterns and Apex trigger frameworks
- Apex Enterprise Patterns
- Namespace and package management
Topic 4: Integration15%- Named Credentials and authentication
- REST and SOAP web services (Apex callouts)
- Platform Events and Change Data Capture
- External Services and Connect REST API
Topic 5: User Interface18%- Lightning Web Components (LWC) advanced features
- Aura Components
- Lightning Data Service
- Visualforce advanced controllers
Topic 6: Data Modeling12%- 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 Plat-Dev-301 Prüfungsfragen mit Lösungen (Q37-Q42):

37. Frage
A developer is working with existing functionality that tracks how many times a stage has changed for an Opportunity. When the Opportunity's stage is changed, a workflow rule is fired to increase the value of a field by one. The developer wrote an after trigger to create a child record when the field changes from 4 to 5.
A user changes the stage of an Opportunity and manually sets the count field to 4. The count field updates to 5, but the child record is not created.
What is the reason this is happening?

Antwort: A

Begründung:
https://help.salesforce.com/s/articleView?id=000384697&type=1


38. Frage
How can a developer efficiently incorporate multiple JavaScript libraries in an Aura component?

Antwort: C

Begründung:
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


39. Frage
As part of a custom interface, a developer team creates various new Lightning web components. Each of the components handles errors using toast messages. When the development is complete, all the components are added to the same Lightning page.
During acceptance testing, users complain about the long chain of toast messages that display when errors occur loading the components.
Which two techniques should the developer implement to improve the user experience?
Choose 2 answers

Antwort: C,D

Begründung:
The scenario describes a common issue when multiple components are used on the same Lightning page and each component manages its error handling independently, leading to a "long chain of toast messages" which can be overwhelming for users.
To improve user experience, the developers can implement the following techniques:
A . Use a Lightning web component to aggregate and display all errors: This method involves creating a centralized component responsible for handling all error messages. This component would receive error notifications from other components and then display them in a user-friendly manner. The benefit of this approach is that it provides a single, consistent interface for error messages, reducing the clutter and confusion that can be caused by multiple toasts.
D . Use public properties on each component to display the error messages: By using public properties, components can expose their error states to a parent or orchestrating component, which can then display these errors in a single, consolidated way. This avoids the issue of multiple toast notifications and allows for a more integrated error handling experience.
The other options presented are less ideal:
B . Using the window.alert() method is not recommended in a professional Salesforce environment as it is considered a disruptive way to show errors and does not align with the Salesforce Lightning design system.
C . Using a <template> tag to display in-place error messages could be a viable option for displaying error messages within the component itself, but it does not address the issue of multiple errors stacking up from different components as described in the scenario.
For building a centralized error handling component: Lightning Web Components Developer Guide - Error Handling For implementing public properties: Lightning Web Components Developer Guide - Public Properties


40. Frage
Universal Containers analyzes a Lightning web component and its Apex controller class that retrieves a list of contacts associated with an account. The code snippets are as follows:

Based on the code snippets, what change should be made to display the contacts' mailing addresses in the Lightning web component?

Antwort: C

Begründung:
To display the contacts' mailing addresses in the Lightning web component, both the SOQL query in the getAccountContacts method and the columns attribute in the JavaScript file of the component need to be updated. The query must include the MailingAddress field, and the JavaScript file must be modified to add this field to the columns shown in the lightning-datatable.


41. Frage
A company wants to run different logic based on an Opportunity's record type.
Which code segment handles this request and follows best practices?
A)

B)

C)

D)

Antwort: B

Begründung:
The use of getRecordTypeInfosByDeveloperName is a best practice to handle record types. This approach avoids the need for SOQL queries, reducing the number of governor limits consumed, and efficiently retrieves record type Ids by their DeveloperName, which is consistent across all Salesforce environments.


42. Frage
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