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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Plat-Dev-301 Prüfungsvorbereitung & Plat-Dev-301 Zertifizierungsantworten

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Salesforce Certified Platform Developer II - Multiple Choice Plat-Dev-301 Prüfungsfragen mit Lösungen (Q177-Q182):

177. Frage
A developer used custom settings to store some configuration data that changes occasionally. However, tests are now Failing in some of the sandboxes that were recently refreshed.
What should be done to eliminate this issue going forward?

A. Replace custom settings with static resources.
B. Set the setting type on the custom setting to Hierarchy.
C. Set the setting type on the custom setting to List.
D. Replace custom settings with custom metadata.

Antwort: D

Begründung:
Replacing custom settings with custom metadata types is a good solution to ensure that test data is consistent across environments. Custom metadata types are deployable, and their records are available in test methods by default, unlike List Custom Settings which need to be manually recreated in each environment after a refresh.

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

Antwort: C,D,E

179. Frage
A developer wants to write a generic Apex method that will compare the Salesforce Name field between any two object records. For example, to compare the Name field of an Account and an Opportunity; or the Name of an Account and a Contact.
Assuming the Name field exists, how should the developer do this?

A. Cast each object into an sObject and use sObject.get to compare the Name fields.
B. Use a string. Replace () method to parse the contents of each Name field and then compare the results.
C. Use the Salesforce Metadata API to extract the value of each object and compare the Name fields.
D. describe) function to compare the values of each Name field.

Antwort: A

Begründung:
Casting each object to an sObject and using the get method to compare the Name fields is the correct approach. This is because sObjects are generic object representations that can be used to access the fields of any Salesforce object dynamically. Reference:
sObject Class

180. Frage
Instead of waiting to send emails to support personnel directly from the finish method of a batch Apex process, Universal Containers wants to notify an external system in the event that an unhandled exception occurs.
What is the appropriate publish/subscribe logic to meet this requirement?

A. No publishing is necessary. Have the external system subscribe to the BatchapexErrorEvent.
B. Publish the error event using the addError method.
C. Publish the error event with a Flow.
D. Publish the error event using the Eventbus. publish () method.

Antwort: A

Begründung:
Use BatchApexErrorEvent for notifications. It's automatically triggered for unhandled exceptions in batch Apex. No need for manual publishing. External systems can subscribe to this event to receive notifications.

181. Frage
A developer is writing a Jest test for a Lightning web component that conditionally displays child components based on a user's checkbox selections.
What should the developer do to properly test that the correct components display and hide for each scenario?

A. Create a new describe block for each test.
B. Create a new jsdom instance for each test.
C. Add a teardown block to reset the DOM after each test.
D. Reset the DOM after each test with the after Each() method.

Antwort: D

Begründung:
To ensure that the DOM is clean before each test runs, the developer should use the afterEach() method to reset it. This is part of the setup and teardown process in Jest tests, which helps to avoid state leakage between tests. Reference:
Jest Globals afterEach

182. Frage
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