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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Logic, Process Automation, and Integration	27%	- Asynchronous Apex: future, queueable, batch, scheduled - Advanced Apex programming and transaction management - REST/SOAP API, Platform Events, and external integrations - Complex business logic and automation design
Topic 2: Performance and Data Management	18%	- Governor limits optimization and best practices - Data modeling and complex data operations - Optimize queries and handle large data volumes
Topic 3: Testing, Debugging, and Deployment	20%	- Debugging and error handling across layers - Deployment strategies, CI/CD, and change management - Advanced testing strategies and test frameworks
Topic 4: User Interface Development	20%	- Optimize UI performance and usability - Build complex Lightning Web Components and Aura Components - Implement advanced Visualforce functionality
Topic 5: Advanced Developer Fundamentals	15%	- Design and maintain scalable, reusable code - Apply security best practices in development - Work with localization, multi-currency, and global features

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Plat-Dev-301 Prüfungsfragen - Plat-Dev-301 Zertifizierungsprüfung

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Salesforce Certified Platform Developer II - Multiple Choice Plat-Dev-301 Prüfungsfragen mit Lösungen (Q17-Q22):

17. Frage
Which technique can run custom logic when a Lightning web component is loaded?

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

Antwort: A

Begründung:
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.

18. Frage
A company uses Dpportunities to track sales to their customers and their org has millions of Opportunities. They want to begin to track revenue over time through a related Revenue object.
As part of their initial implementation, they want to perform a one-time seeding of their data by automatically creating and populating Revenue records for Opportunities, based on complex logic.
They estimate that roughly 100,000 Opportunities will have Revenue records created and populated.
What is the optimal way to automate this?

A. Use system, acheduladeb() to schedule a patakape.Scheduleable class.
B. Use Database. =executeBatch() to invoke a Database. Batchable class.
C. Use system, enqueuJob (| to invoke a gueusable class.
D. Use Database. executeBatch () to invoke a Queueable class.

Antwort: B

Begründung:
For a one-time bulk operation on a large data set, using a Database.Batchable class is the best approach. This allows complex logic to be processed in manageable chunks and efficiently manages system resources.

19. Frage
A developer is developing a reusable Aura component that will reside on an sObject Lightning page with the following HTML snippet:

How can the component"5 controller get the context of the Lightning page that the sObject is on without requiring additional test coverage?

A. Use the gerSubjectType method in an Apex class.
B. Add force:hasSobjectName to the implements attribute.
C. Set the sObject type as a component attribute.
D. Create a design attribute and configure via App Builder.

Antwort: B

Begründung:
By implementing force:hasSobjectName, the Aura component can retrieve the sObject context of the record page it is placed on without needing additional information. This interface provides the component with the API name of the sObject being displayed.
Aura Components Developer Guide

20. Frage
Universal Containers stores user preferences in a Hierarchy Custom Setting, User_Prefs_c, with a Checkbox field, Show_Help_c. Company-level defaults are stored at the organizational level, but may be overridden at the user level. If a user has not overridden preferences, then the defaults should be used.
How should the Show_Help_c preference be retrieved for the current user?

A. Boolean show = User_Prefs__c.getValues().Show_Help__c;
B. Boolean show = User_Prefs__c.Show_Help__c;
C. Boolean show = User_Prefs__c.getInstance().Show_Help__c;
D. Boolean show = User_Prefs__c.getValues(UserInfo.getUserId()).Show_Help__c;

Antwort: C

Begründung:
To retrieve the Show_Help__c preference for the current user from a hierarchy custom setting, the getInstance() method should be used. This method retrieves the custom setting data for the user or the organization default if no user-specific setting is found.

21. Frage
An Apex trigger creates a Contract record every time an Opportunity record is marked as Closed and Won. This trigger is working great, except (due to a recent acquisition) historical Opportunity records need to be loaded into the Salesforce instance.
When a test batch of records are loaded, the Apex trigger creates Contract records.
A developer is tasked with preventing Contract records from being created when mass loading the Opportunities, but the daily users still need to have the Contract records created.
'What is the most extendable way to update the Apex trigger to accomplish this?

A. Add a validation rule to the Contract to prevent Contract creation by the user who loads the data.
B. Use a hierarchy custom setting to skip executing the logic inside the trigger for the user who loads the data.
C. Use a list custom setting ta disable the trigger for the user who loads the data.
D. Add the Profile ID of the user who loads the data to the trigger, so the trigger will not fire for this user.

Antwort: B

Begründung:
A hierarchy custom setting can be used to create a configuration that the trigger checks before executing its logic. This allows admins to set the configuration to bypass the trigger logic when loading data, without changing the trigger itself or impacting other users.

22. Frage
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