（1～150）【Platform Developer I】Salesforce 認定 Platform デベロッパー 資格練習問題集と解析
◐１．Question:
Universal Containers wants Opportunities to no longer be editable when it reaches the Closed/Won stage.
Which two strategies can a developer use to accomplish this?
Choose 2 answers.
Options:
A. Use an auto-response rule.
B. Use an automatically launched Approval Process.
C. Use a validation rule.
D. Use a before-save Apex trigger.
Correct Answers: C and D
Explanation:
C. Use a validation rule: A validation rule can be used to prevent users from saving records that meet certain criteria, such as when the Opportunity stage is "Closed/Won."
D. Use a before-save Apex trigger: A before-save trigger can enforce custom logic before a record is saved, preventing edits if the stage is "Closed/Won."
Why the others are incorrect:
A. Use an auto-response rule: Auto-response rules only send emails based on criteria and don’t control record edits.
B. Use an automatically launched Approval Process: Approval processes are for managing record approvals, not for restricting edits based on stage.
◐２．A software company is using Salesforce to track the companies they sell their software to in the Account object. They also use Salesforce to track bugs in their software with a custom object, Bug__c.
As part of a process improvement initiative, they want to be able to report on which companies have reported which bugs. Each company should be able to report multiple bugs, and bugs can also be reported by multiple companies.
What is needed to allow this reporting?
Options:
A. Roll-up summary field of Bug__c on Account
B. Junction object between Bug__c and Account
C. Lookup field on Bug__c to Account
D. Master-detail field on Bug__c to Account
Correct Answer: B
Explanation:
B. Junction object between Bug__c and Account: A junction object is needed to model a many-to-many relationship in Salesforce, where each company (Account) can report multiple bugs, and each bug can be reported by multiple companies. The junction object creates a link between Account and Bug__c, allowing the reporting of which companies reported which bugs.
Why the others are incorrect:
A. Roll-up summary field of Bug__c on Account: Roll-up summary fields summarize data from a related object, but they are only available for master-detail relationships, and wouldn’t support many-to-many relationships.
C. Lookup field on Bug__c to Account: A lookup relationship would only allow one company per bug, which does not meet the requirement for multiple companies reporting the same bug.
D. Master-detail field on Bug__c to Account: A master-detail relationship would enforce a one-to-many relationship, where one company could report multiple bugs but not the other way around.
The junction object is the correct way to handle the many-to-many relationship between companies and bugs.
◐３．A developer created a trigger on the Account object. While testing the trigger, the developer sees the error message ‘Maximum trigger depth exceeded’.
What could be the possible causes?
Options:
A. The developer does not have the correct user permission.
B. The trigger is getting executed multiple times.
C. The trigger is too long and should be refactored into a helper class.
D. The trigger does not have sufficient code coverage.
Correct Answer: B
Explanation:
B. The trigger is getting executed multiple times: The "Maximum trigger depth exceeded" error occurs when a trigger runs in an infinite loop, often due to recursive execution. This can happen if a trigger modifies records that cause the same trigger to run again, leading to multiple executions and exceeding the trigger depth limit.
Why the others are incorrect:
A. The developer does not have the correct user permission: This would lead to a permission-related error, not a "Maximum trigger depth exceeded" error.
C. The trigger is too long and should be refactored into a helper class: Although refactoring is good practice, it wouldn't cause the "Maximum trigger depth exceeded" error. The error is related to recursion, not code length.
D. The trigger does not have sufficient code coverage: Code coverage is related to deploying triggers in production, and it does not cause this particular error. This error occurs during execution, not deployment.
The issue is primarily due to recursive execution of the trigger.
◐４．A developer creates a Lightning web component that imports a method within an Apex class. When a Validate button is pressed, the method runs to execute complex validations.
In this implementation scenario, which two options are part of the Controller according to the MVC architecture?
Choose 2 answers.
Options:
A. JavaScript file
B. XML file
C. Apex class
D. HTML file
Correct Answers: A and C
Explanation:
A. JavaScript file: In the Model-View-Controller (MVC) architecture, the JavaScript file in a Lightning web component acts as the client-side controller. It handles user interactions (such as button clicks) and communicates with the server-side Apex controller.
C. Apex class: The Apex class acts as the server-side controller. It contains the business logic and handles complex operations like validations, data processing, or database interactions when invoked by the client-side JavaScript.
Why the others are incorrect:
B. XML file: The XML file in Lightning web components is for defining metadata such as the component’s visibility in Lightning App Builder, and it does not act as a controller in MVC architecture.
D. HTML file: The HTML file defines the view (user interface) and is part of the "View" layer, not the "Controller."
In the MVC framework, the JavaScript and Apex class together act as controllers, managing the flow of data and logic.
◐５．Which two features satisfy this use case?
Choose 2 answers.
Options:
A. Next Best Action can be used to check the record criteria and send an outbound message.
B. Approval Process can be used to check the record criteria and send an outbound message without Apex code.
C. Flow Builder can be used to check the record criteria and send an outbound message.
D. Entitlement Process can be used to check the record criteria and send an outbound message without Apex code.
Correct Answers: B and C
Explanation:
B. Approval Process can be used to check the record criteria and send an outbound message without Apex code: Approval processes allow for checking record criteria and performing various actions like sending outbound messages when conditions are met, all without requiring Apex code.
C. Flow Builder can be used to check the record criteria and send an outbound message: Flow Builder provides a more flexible way to check record criteria and send outbound messages based on declarative logic, allowing for complex processes without requiring coding.
Why the others are incorrect:
A. Next Best Action can be used to check the record criteria and send an outbound message: Next Best Action is used to surface recommendations based on predefined rules but is not designed for sending outbound messages based on record criteria.
D. Entitlement Process can be used to check the record criteria and send an outbound message without Apex code: Entitlement processes are used for managing SLAs (Service Level Agreements) and case milestones, not for sending outbound messages.
Approval processes and Flow Builder are the most suitable tools for checking record criteria and sending outbound messages in a declarative way.
◐６．Universal Containers wants to automatically assign new cases to the appropriate support representative based on the case origin. They have created a custom field on the Case object to store the support representative name.
What is the best solution to assign the case to the appropriate support representative?
Options:
A. Use a trigger on the Case object.
B. Use a formula field on the Case object.
C. Use a validation rule on the Case object.
D. Use an Assignment Flow element.
Correct Answer: D
Explanation:
D. Use an Assignment Flow element: The Assignment Flow element in Flow Builder is the best solution here because it allows for automating the assignment of cases based on the case origin using declarative tools without the need for code. It can dynamically assign the support representative based on logic defined in the flow.
Why the others are incorrect:
A. Use a trigger on the Case object: While a trigger could achieve this, it requires Apex code. This approach is less preferable when there is a declarative (no-code) solution like Flow.
B. Use a formula field on the Case object: Formula fields are read-only and cannot be used to dynamically assign values to a field. They are for calculations, not for assigning users.
C. Use a validation rule on the Case object: Validation rules enforce data integrity but do not automate field assignments. They would not help with assigning a case to a representative based on criteria.
The Assignment Flow element offers a flexible, declarative approach to assign cases based on conditions like case origin.
◐７．What are two considerations for running a flow in debug mode?
Choose 2 answers.
Options:
A. Callouts to external systems are not executed when debugging a flow.
B. DML operations will be rolled back when the debugging ends.
C. Input variables of type record cannot be passed into the flow.
D. Clicking Pause or executing a Pause element closes the flow and ends debugging.
Correct Answers: A and B
Explanation:
A. Callouts to external systems are not executed when debugging a flow: During debugging, callouts to external systems are not performed to avoid unwanted or unnecessary external interactions. This allows for safer and faster debugging.
B. DML operations will be rolled back when the debugging ends: In debug mode, any database (DML) operations are rolled back, meaning that no changes are permanently saved to the database. This ensures that debugging does not unintentionally modify data.
Why the others are incorrect:
C. Input variables of type record cannot be passed into the flow: This is not true. Input variables, including records, can be passed into the flow during debugging.
D. Clicking Pause or executing a Pause element closes the flow and ends debugging: This is incorrect. Clicking Pause does not end the debugging session but pauses the flow execution.
Debugging a flow is safe as callouts are skipped and DML operations are rolled back, ensuring no permanent data changes.
◐８．A developer is designing a new application on the Salesforce platform and wants to ensure it can support multiple tenants effectively.
Which design framework should the developer consider to ensure scalability and maintainability?
Options:
A. Waterfall Model
B. Flux (view, action, dispatcher, and store)
C. Model-View-Controller (MVC)
D. Agile Development
Correct Answer: C
Explanation:
C. Model-View-Controller (MVC): The MVC framework is widely used in Salesforce to separate the business logic (Model), user interface (View), and control flow (Controller). This design pattern improves scalability and maintainability by cleanly separating concerns, making it easier to develop, test, and extend the application.
Why the others are incorrect:
A. Waterfall Model: This is a project management methodology, not a design framework for building scalable applications.
B. Flux: While Flux is a design pattern used in front-end JavaScript applications (like React), it’s not typically used in Salesforce application development.
D. Agile Development: Agile is a project management and development approach, not a framework for designing scalable applications.
◐９．What are two benefits of using External IDs?
Choose 2 answers.
Options:
A. An External ID field can be used to reference an ID from another external system.
B. An External ID can be a formula field to help create a unique key from two fields in Salesforce.
C. An External ID can be used with Salesforce Mobile to make external data visible.
D. An External ID is indexed and can improve the performance of SOQL queries.
Correct Answers: A and D
Explanation:
A. An External ID field can be used to reference an ID from another external system: External IDs are used to store unique identifiers from external systems, enabling easy data integration between Salesforce and other platforms.
D. An External ID is indexed and can improve the performance of SOQL queries: External ID fields are automatically indexed, which enhances the performance of queries that search by that field, improving overall efficiency.
Why the others are incorrect:
B. An External ID can be a formula field to help create a unique key from two fields in Salesforce: External IDs cannot be formula fields. They must be text, number, or email fields.
C. An External ID can be used with Salesforce Mobile to make external data visible: This is not a feature of External IDs. They are used for integrations, not for making external data visible in mobile apps.
◐１０．A company decides to implement a new process where every time an Opportunity is created, a follow-up Task should be created and assigned to the Opportunity Owner.
What is the most efficient way for a developer to implement this?
Options:
A. Apex trigger on Task
B. Task actions
C. Auto-launched flow on Task
D. Record-triggered flow on Opportunity
Correct Answer: D
Explanation:
D. Record-triggered flow on Opportunity: A record-triggered flow is designed to execute actions when a record (in this case, an Opportunity) is created or updated. This type of flow is efficient for creating related records (like a Task) and can be configured to assign the Task to the Opportunity Owner based on the Opportunity's information. It’s a declarative approach that doesn’t require writing code.
Why the others are incorrect:
A. Apex trigger on Task: Using an Apex trigger on Task would require writing and maintaining code to handle the creation of Tasks when an Opportunity is created. This is less efficient than using a declarative solution like Flow.
B. Task actions: Task actions are generally used for tasks and events within the context of records, but they do not handle the creation of Tasks based on the creation of other records.
C. Auto-launched flow on Task: An auto-launched flow is designed to be launched manually or via other processes, not automatically triggered by record changes. It wouldn’t be as straightforward for handling the creation of Tasks when an Opportunity is created.
Using a record-triggered flow on Opportunity provides a straightforward, no-code solution for creating and assigning a follow-up Task efficiently.
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