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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Logic and Process Automation	22%	- Advanced Apex programming - Dynamic Apex and SOQL/SOSL - Asynchronous Apex (Batch, Queueable, Future, Scheduled) - Invocable Actions and Platform Events
Topic 2: User Interface	18%	- Lightning Data Service - Visualforce advanced controllers - Lightning Web Components (LWC) advanced features - Aura Components
Topic 3: Integration	15%	- Platform Events and Change Data Capture - External Services and Connect REST API - Named Credentials and authentication - REST and SOAP web services (Apex callouts)
Topic 4: Architecture	18%	- Namespace and package management - Design patterns and Apex trigger frameworks - Apex Enterprise Patterns - Governor limits and bulkification
Topic 5: Data Modeling	12%	- External objects and data sources - Advanced object relationships and data modeling - Large data volumes considerations
Topic 6: Testing, Debugging, and Deployment	15%	- Test data strategies and mocking - Debugging and performance profiling - Apex unit testing best practices - Deployment tools (SFDX, Metadata API)

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

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

Antwort: A

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.

178. Frage
A developer has working business logic code, but sees the following error in the test class:
You have uncommitted work pending. Please commit or rollback before calling out.
What is a possible solution?

A. Call support for help with the target endpoint, as It is likely an external code error.
B. Set seeAllData to true the top of the test class, since the code does not fall in practice.
C. Use mast. T=RunningTes={} before making the callout to bypass it in test execution,
D. Rewrite the business logic and test classes with @Testvisible set on the callout.

Antwort: B

Begründung:
The error "You have uncommitted work pending. Please commit or rollback before calling out" usually indicates that DML operations (like insert, update, delete) are being performed before a callout in a test context. This is not allowed because Salesforce does not support this sequence of operations in a single transaction. However, the use of seeAllData=true is generally not a recommended practice and does not address the core issue of mixed DML and callouts in tests. The correct solution is to use a mocking framework to simulate the callout response. By using Test.setMock(), developers can avoid performing actual callouts in test methods, thus bypassing the uncommitted work error.
Apex Developer Guide - Testing HTTP Callouts
Apex Developer Guide - Isolation of Test Data from Organization Data in Unit Tests

179. Frage
A company wants to incorporate a third-party weh service to set the Address fields when an Account is inserted, if they have not already been set.
What is the optimal way to achieve this?

A. Create a Process, execute a Quaueable job from it, and make a callout from the Queueable job.
B. Create an Apex trigger, execute a Queueable job from it, and make a callout from the Queueable job.
C. Create a Before Save Flow, execute a Queueable job from it, and make a callout from the Queusable job.
D. Create a Workflow Rule, execute a Queueable job from it, and make a callout from the Queueable job.

Antwort: B

Begründung:
To make a callout to set the Address fields when an Account is inserted without violating the Salesforce limit against callouts from triggers, a developer can use a trigger to execute a Queueable job. The Queueable job can then safely make the callout.

180. Frage
A Visualforce page needs to make a callout to get billing information and tax information from two different REST endpoints. The information needs to be displayed to the user at the same time and the return value of the billing information contains the input for the tax information callout. Each endpoint might take up to two minutes to process.
How should a developer implement the callouts?

A. A Continuation for both the billing callout and the tax callout
B. An HTTP REST callout for the billing callout and a Continuation for the tax callout
C. A Continuation for the billing callout and an HTTP REST callout for the tax callout
D. An HTTP REST callout for both the billing callout and the tax callout

Antwort: A

Begründung:
Using Continuation for both callouts is the optimal solution when you have long-running callouts in a Visualforce page, as it allows the page to wait for a long-running process without tying up server resources. The Continuation pattern is specifically designed for scenarios where the request-response cycle could exceed the timeout limits.

181. Frage
An Apex trigger and Apex class increment a counter, Edit __C, any time the Case is changed.

A)

B)

C)

D)

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

Antwort: C

182. Frage
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