CRT-450日本語認定対策、CRT-450受験対策解説集

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Salesforce Certified Platform Developer I 認定 CRT-450 試験問題 (Q75-Q80):

質問 # 75
Universal Containers implemented a private sharing model for the Account object. A custom Account search tool was developed with Apex to help sales representatives find accounts that match multiple criteria they specify. Since its release, users of the tool report they can see Accounts they do not own.
What should the developer use to enforce sharing permissions for the currently logged in user while using the custom search tool?

A. Use the schema describe calls to determine if the logged-in user has access to the Account object.
B. Use the with sharing keyword on the class declaration.
C. Use the without sharing keyword on the class declaration.
D. Use the userInfo Apex class to filter all SOQL queries to returned records owned by the logged-in user.

正解：B

解説：
Thewith sharingkeyword ensures that the Apex class respects the sharing rules of the current user, including private sharing models. This means the logged-in user will only see records they own or have been shared with them.
Reference:Apex Class Sharing Rules
Incorrect Options:
B:without sharingignores sharing rules, exposing data the user does not have access to.
C:Filtering withUserInfois not a scalable or maintainable solution.
D:Schema describe calls do not enforce sharing permissions but only check object-level access.

質問 # 76
Universal Containers recently transitioned from Classic to Lighting Experience. One of its business processes requires certain value from the opportunity object to be sent via HTTP REST callout to its external order management system based on a user-initiated action on the opportunity page. Example values are as follow
* Name
* Amount
* Account
Which two methods should the developer implement to fulfill the business requirement? (Choose 2 answers)

A. Create an after update trigger on the Opportunity object that calls a helper method using
@Future(Callout=true) to perform the HTTP REST callout.
B. Create a Visualforce page that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.
C. Create a Process Builder on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity is updated.
D. Create a Lightning component that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.

正解：B、D

解説：
The developer should implement either a Lightning component or a Visualforce page that performs the HTTP REST callout, and use a Lightning Action or a Visualforce quick action to expose the component on the Opportunity detail page. These methods allow the developer to create a user interface that can capture the user input and trigger the callout based on a user-initiated action. The Lightning component or the Visualforce page can use the Apex controller to invoke the HTTP callout using the built-in HTTP classes, such as HttpRequest, HttpResponse, and Http. The Lightning Action or the Visualforce quick action can be added to the page layout of the Opportunity object and configured to display the component in a modal dialog or a panel.
Creating a Process Builder or an after update trigger to perform the HTTP REST callout is not a suitable method for this business requirement, because these methods do not provide a user interface or a user-initiated action. The Process Builder or the trigger would execute the callout whenever the Opportunity is updated, regardless of the user input or intention. This could result in unnecessary or unwanted callouts, as well as hitting the governor limits for callouts.
References: Invoking HTTP Callouts, Configuring an HTTP Callout Action, Create HTTP Callout for Salesforce Flow, Invoking Callouts Using Apex, [Prepare for Your Salesforce Platform Developer I Credential]

質問 # 77
A developer creates a custom exception as shown below:
public class ParityException extends Exception { }
What are two ways the developer can fire the exception in Apex?

A. new ParityException ();
B. throw new ParityException ();
C. throw new parityException ('parity does not match');
D. new ParityException('parity does not match');

正解：B、C

質問 # 78
Universal Container is building a recruiting app with an Applicant object that stores information about an individual person that represents a job. Each application may apply for more than one job.
What should a developer implement to represent that an applicant has applied for a job?

A. Junction object between Applicant and Job
B. Lookup field from Applicant to Job
C. Formula field on Applicant that references Job
D. Master-detail field from Applicant to Job

正解：A

解説：
A junction object between Applicant and Job is the best way to represent that an applicant has applied for a job. A junction object is a custom object that has two master-detail relationships with two other objects. It allows you to create a many-to-many relationship between those objects. In this case, the junction object can store the information about the application, such as the date, status, and feedback, and link each applicant to one or more jobs, and each job to one or more applicants12.
References:
* 1: Relationships Among Objects
* 2: Cert Prep: Platform Developer I: Data Modeling and Management

質問 # 79
A credit card company needs to implement the functionality for a service agent to process damaged or stolen credit cards. When the customers call in, the service agent must gather many pieces of information. A developer is tasked to implement this functionality.
What should the developer use to satisfy this requirement in the most efficient manner?

A. Approval process
B. Screen-based flow
C. Lightning Component
D. Apex trigger

正解：B

解説：
The requirement is for service agents to gather many pieces of information when processing damaged or stolen credit cards.
Option A: Screen-based Flow
Correct Answer.
A Screen Flow allows developers to build guided, interactive forms that collect information from users.
Flows can have multiple screens, validation rules, and branching logic.
They can be created declaratively without code, making them efficient to implement.
Benefits:
Efficient Development: No need for code.
User-Friendly: Provides a step-by-step interface.
Maintainable: Easy to update as requirements change.
Building a custom Lightning Component requires development effort.
For simple data collection, a Flow is more efficient.
Option C: Approval Process
Incorrect.
Approval Processes are used for routing records for approval, not for gathering information from users.
Option D: Apex Trigger
Incorrect.
Triggers run in the background and are not used for interactive user interfaces.
Conclusion:
The most efficient way to satisfy the requirement is to use a Screen-based Flow, which is Option A.
Reference:
Build a Flow
Screen Flows
Incorrect Options:
Option B: Lightning Component
*Possible but Less Efficient.

質問 # 80
......

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CRT-450 ポイントを押さえたわかりやすい解説

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グロバールで最も信頼できるSalesforce Developers CRT-450 pdf練習問題集の提供者として、すべてのお客様に責任を負い、力の限りでCRT-450試験認定を取得するのを手伝っています。

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CRT-450日本語認定対策、CRT-450受験対策解説集

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CRT-450受験対策解説集、CRT-450過去問無料

Salesforce Certified Platform Developer I 認定 CRT-450 試験問題 (Q75-Q80):

CRT-450 ポイントを押さえたわかりやすい解説

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