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Salesforce Plat-Dev-301 Exam Syllabus Topics:

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

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Salesforce Certified Platform Developer II - Multiple Choice 認定 Plat-Dev-301 試験問題 (Q112-Q117):

質問 # 112
A company needs to automatically delete sensitive information after seven years.
This could delete almost a million records every day.
How can this be achieved?

A. Perform a SOSL statement to find records older than 7 years, and then delete the entire result set.
B. Schedule an @fuzure process to query records older than seven years, and then recursively invoke itself in 1,000 record batches to delete them,
C. Use aggregate functions to query for records older than seven years, and then delete the aggrigateResults objects.{civ [+] Schedule a batch Apex process to run every day that queries and deletes records older than seven years.

正解：A

解説：
Batch Apex is designed to handle large data operations by breaking the transaction into smaller batches. Scheduling a batch process to run daily enables the system to manage the deletion of large numbers of records efficiently, without hitting governor limits. It's the best practice for performing mass deletions on a regular schedule.
Using Batch Apex

質問 # 113
A developer wrote an Apex class to make several callouts to an external system.
If the URLs used in these callouts will change often, which feature should the developer use to minimize changes needed to the Apex class?

A. Session Id
B. Connected Apps
C. Named Credentials
D. Remote Site Settings

正解：C

解説：
The correct feature to use is C, Named Credentials. Named Credentials are a secure way of storing the endpoint and authentication details for callouts to external services. When URLs change frequently, using Named Credentials allows you to manage the endpoint URL in one place without changing the Apex code.
Named Credentials

質問 # 114
What are three reasons that a developer should write Jest tests for Lightning web components?
Choose 3 answers

A. To verify that events fire when expected
B. To test how multiple components work together
C. To test basic user interaction
D. To test a component's non-public properties.
E. To verify the DOM output of a component

正解：C、D、E

解説：
Jest tests are essential for developing Lightning Web Components (LWC) because they allow developers to ensure the quality and correctness of their components in isolation from the rest of the application. Reason A is incorrect because testing non-public properties breaks encapsulation and is considered bad practice. B is correct because Jest tests can simulate user interactions with the component, such as clicking buttons or entering text, to ensure it behaves as expected. C is correct as well because Jest tests can confirm that the component renders the expected DOM output, which is crucial for ensuring that the HTML structure of the component is accurate. D is not the best choice since Jest is more suited for testing components in isolation rather than how multiple components interact; integration tests are more appropriate for that. Lastly, E is correct because Jest tests can verify that events are fired at the appropriate times, which is a critical part of the component's interaction with the rest of the application.
Reference
Jest Testing: Lightning Web Components Testing
Jest Testing Best Practices: Lightning Web Components Jest Best Practices

質問 # 115
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 A
B. Option B
C. Option C
D. Option D

正解：B

解説：
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.

質問 # 116
Universal Containers decided to use Salesforce to manage a new hire interview process. A custom object called Candidate was created with organization-wide defaults set to Private. A lookup on the Candidate object sets an employee as an Interviewer.
What should be used to automatically give Read access to the record when the lookup field is set to the Interviewer user?

A. The record cannot he shared with the current setup.
B. The record can be shared using a permission set.
C. The record can be shared using an Apex class.
D. The record can be shared using a sharing rule.

正解：D

解説：
A sharing rule can be used to automatically give Read access to a user specified in a lookup field. Sharing rules are declarative and can be based on criteria such as the value of a lookup field. This can be done without writing code and is maintainable through the Salesforce UI.

質問 # 117
......

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