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Salesforce Plat-Dev-301 Exam Syllabus Topics:

Section	Objectives
Topic 1: Integration and APIs	- Platform events and messaging 1. Event-driven architecture 2. Change Data Capture concepts - External system integration 1. Callouts from Apex 2. REST and SOAP API usage
Topic 2: Data Modeling and Management	- Advanced data modeling 1. Complex relationships and schema design 2. Large data volume considerations - Data access and security 1. Security enforcement in Apex 2. Sharing rules and Apex-managed sharing
Topic 3: Testing and Deployment	- Testing strategies 1. Code coverage and quality practices 2. Test data creation and mocking - Deployment lifecycle 1. Change sets and deployment tools 2. Version control and CI/CD concepts
Topic 4: Application Development	- Advanced Apex programming 1. Apex design patterns and best practices 2. Dynamic Apex and metadata-driven development 3. Exception handling and debugging strategies - Asynchronous processing 1. Scheduled Apex 2. Batch Apex and Queueable Apex 3. Future methods and limits considerations

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Salesforce Certified Platform Developer II - Multiple Choice Plat-Dev-301 Prüfungsfragen mit Lösungen (Q132-Q137):

132. Frage
Universal Containers wants to notify an external system, in the event that an unhandled exception occurs, by publishing a custom event using Apex.
What is the appropriate publish/subscribe logic to meet this requirement?

A. Publish the error event using the Eventrus.publish() method and have the external system subscribe to the event using CometD.
B. Publish the error event using the addError () method and write a trigger to subscribe to the event and notify the external system.
C. Have the external system subscribe to the event channel. No publishing is necessary.
D. Publish the error event using the addError () method and have the external system subscribe to the event using Comet

Antwort: A

Begründung:
When an unhandled exception occurs, publishing a custom platform event using EventBus.publish() method is the appropriate way. The external system can then subscribe to this event using technologies like CometD to receive notifications. Publish and Subscribe to Platform Events

133. Frage
A developer notices the execution of all the test methods in a class takes a long time to run, due to the initial setup of all the test data that is needed to perform the tests. What should the developer do to speed up test execution?

A. Define a method that creates test data and annotate with @testSetup.
B. Reduce the amount of test methods in the class.
C. Define a method that creates test data and annotate with @createData.
D. Ensure proper usage of test data factory in all test methods.

Antwort: A

Begründung:
Using the @testSetup annotation to define a method that creates test data before the tests run can significantly speed up test execution by reducing the setup time for each test method in the class. This method runs once before any test method in the class and can be used by all test methods.

134. Frage
A developer needs to implement a system audit feature that allows users, assigned to a custom profile named "Auditors", to perform searches against the historical records in the Account object. The developer must ensure the search is able to return history records that are between 6 and 12 months old.
Given the code below, which select statement should be inserted below as a valid way to retrieve the Account History records ranging from 6 to 12 months old?

A)

B)

C) D)

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

Antwort: B

Begründung:
Given the code snippet, the correct query to retrieve Account History records between 6 and 12 months old would be the one that includes a WHERE clause filtering records where the CreatedDate is greater than or equal to initialDate and less than or equal to endDate. Option B's statement does this correctly by using the >= and <= operators to define the range between initialDate (which is set to today's date minus 12 months) and endDate (set to today's date minus 6 months). Options A, C, and D either use incorrect comparison operators or compare against the wrong variables, resulting in an incorrect data set being returned.
Reference
SOQL Date Formats and Date Literals: SOQL and SOSL Reference Guide

135. Frage
A developer has a requirement to query three fields (Id, Name, Type) from an Account; and first and last names for all Contacts associated with the Account.
Which option is the preferred, optimized method to achieve this for the Account named 'Ozone Electronics'?
A)

B)

C)

D)

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

Antwort: D

136. Frage
Exhibit.

Given the code above, which two changes need to be made in the Apex Controller for the code to work? Choose 2 answers

A. Remove line 06 from the Apex Controller and instead use firstName in the return on line 07.
B. Annotate the entire class as @AuraEnabled instead of just the single method.
C. Change the method signature to be global static, not public to String.
D. Change the argument in the Apex Controller line 05 from subject to string.

Antwort: A,D

Begründung:
Based on the code provided, here are the necessary changes:
Change B is required because the argument in the Apex controller's serverEcho method must match the data type expected by the JavaScript calling the method. The Apex method expects an Object named firstName, which is then cast to a String inside the method. The JavaScript is passing an object with a property firstName, so no change is needed in the JavaScript.
Change D is correct because line 06 is redundant and unnecessary. We can directly use firstName in the return statement as it is already a String type. The get() method is typically used when you have a Map and you need to retrieve a value by its key. Since firstName is already being passed as a String, there's no need to cast it or retrieve it using get().
Apex Developer Guide

137. Frage
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