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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Valid Reliable Plat-Dev-301 Test Guide & Useful Materials to help you pass Plat-Dev-301: Salesforce Certified Platform Developer II - Multiple Choice

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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q23-Q28):

NEW QUESTION # 23
An Apex trigger and Apex class increment a counter, Edit __C, any time the Case is changed.

A)

B)

C)

D)

A. Option D
B. Option C
C. Option A
D. Option B

Answer: B

NEW QUESTION # 24
A company has a custom component that allows users to search for records of a certain object type by invoking an Apex Controller that returns a list of results based on the user's input. When the search is completed, a searchComplete event is fired, with the results put in a results attribute of the event. The component is designed to be used within other components and may appear on a single page more than once.
What is the optimal code that should be added to fire the event when the search has completed?
A)

B)

C)

D)

A. Option D
B. Option B
C. Option A
D. Option C

Answer: B

Explanation:
The correct code to fire the event when the search has completed in a Lightning component is option B. $A.get("e.c.searchComplete") is the syntax used to get the event, setParams is used to set the parameters, and fire is used to dispatch the event.

NEW QUESTION # 25
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 the transient keyword for the List variables used in the custom controller.
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 an <apex:actionPollar) in the page to load all of the data asynchronously.

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 # 26
Exhibit:

The test method above tests in Apex trigger that the developer knows will make a lot of queries when a lot of Accounts are simultaneously updated to be customers. The test method fails at the Line 20 because of too many SOQL queries. What is the correct way to fix this?

A. Change the DataFactory class to create fewer Accounts so that the number of queries in the trigger is reduced
B. Replace most of the Apex Trigger with Process Builder processes to reduce the number of queries in the trigger
C. Add Test.startTest() before and Test.stopTest() after both Line 7 of the code and Line 20 of the code
D. Add Test.startTest() before Line 18 of the code and add Test.stopTest() after line 18 of the code

Answer: D

Explanation:
https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_tools_start_stop_test.htm

NEW QUESTION # 27
A company has many different unit test methods that create Account records as part of their data setup. A new required field was added to the Account and now all of the unit tests fail.
What is the optimal way for a developer to fix the issue?

A. Create a TestDataFactory class that serves as the single place to create Accounts for unit tests and set the required field there.
B. Add a before insert trigger on Account to set the value of the required field,
C. Change the required field to be a validation rule that excludes the System Administrator profile.
D. Add the required field to the data setup for all of the unit tests.

Answer: A

Explanation:
The optimal way to fix the failing unit tests after adding a new required field to the Account object is to create a TestDataFactory class that serves as a centralized place to create Accounts for unit tests. This class would include the new required field, ensuring that all unit tests have the necessary data setup.

NEW QUESTION # 28
......

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