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Salesforce CRT-450 Exam Syllabus Topics:

SectionWeightObjectives
Apex Basics23%- Apex syntax and core concepts
- SOQL and SOSL queries
User Interface10%- Lightning Component basics
- User interface customization
Data Modeling and Management20%- Data import, export, and management tools
- Object schema design and relationships
Testing, Debugging, and Deployment17%- Debugging and deployment tools
- Unit testing in Apex
Logic and Process Automation30%- Triggers and Apex classes
- Workflow, Process Builder, and Flow

>> CRT-450問題例 <<

CRT-450復習内容、CRT-450日本語学習内容

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Salesforce Certified Platform Developer I 認定 CRT-450 試験問題 (Q218-Q223):

質問 # 218
A developer has an integer variable called maxAttempts. The developer needs to ensure that once maxAttempts is initialized, it preserves its value for the length of the Apex transaction; while being able to share the variable's state between trigger executions.
How should the developer declare maxAttempts to meet these requirements?

正解：C

解説：
To preserve the value ofmaxAttemptsfor the length of the Apex transaction and share its state between trigger executions:
Static Variable:
Static variables are initialized once per transaction and retain their value throughout the transaction.
They can be accessed without instantiating the class.
Private Scope:
Declaring it as private ensures encapsulation and prevents unintended external modification.
Helper Class:
Using a helper class ensures the separation of concerns, keeping trigger logic clean and adhering to best practices.
Example Code:public class HelperClass {
private static Integer maxAttempts = 5; // Default value
public static Integer getMaxAttempts() {
return maxAttempts;
}
public static void setMaxAttempts(Integer attempts) {
maxAttempts = attempts;
}
}
A:Constants (static + final) cannot be modified after initialization.
B:Trigger member variables cannot retain values across executions within the same transaction.
C:Declaring it as a non-static variable in a helper class would reset its value during each trigger execution.
Why Not the Other Options?


質問 # 219
A developer must create a Lightning component that allows user to input Contact record information to create a Contact record, including a Salary__c custom field. What should the developer use, along with a lightning-record-edit-form, so that Salary__c field functions as a currency input and is only viewable and editable by users that have the correct field level permissions on Salary__c?

正解：B


質問 # 220
(Full question statement)
Which statement generates a list ofLeadsandContactsthat have a field containing the phrase "ACME"?

正解：D

解説：
C (Correct):This is the correctSOSL (Salesforce Object Search Language)syntax. It performs a full-text search across multiple objects and fields.
The format FIND '*ACME*' IN ALL FIELDS RETURNING Contact, Lead is thestandard and correctapproach for cross-object keyword searches.
Incorrect options:
A:Incorrect syntax; needs ALL FIELDS or NAME FIELDS, and proper result typing.
B:SOQL does not support searching across multiple objects in a single query.
D:Incorrect casing and structure; missing proper list handling.
Reference:Apex Developer Guide - SOSL Syntax
This relates toDeveloper Fundamentals (23%), specificallySOSL vs. SOQL use cases and syntax.


質問 # 221
What is a considerations for running a flow in debug mode?

正解：A

解説：
When running a flow in debug mode, Salesforce rolls back any DML operations performed during the debugging process to ensure no data changes affect the org. This helps test and verify flow logic without impacting live data.
Reference:Flow Debugging Documentation


質問 # 222
Universal Containers is building a recruiting app with an Applicant object that stores information about an individual person and a Job object that represents a job. Each applicant may apply for more than one job.
What should a developer implement to represent that an applicant has applied for a job?

正解：A

解説：
To represent that an applicant has applied for a job when each applicant can apply to multiple jobs:
Option B: Junction object between Applicant and Job
Implementation:
Create a custom object, e.g., JobApplication.
Add master-detail relationships to both Applicant and Job.
Reference:
"Use a junction object to model a many-to-many relationship between two objects."
- Salesforce Help: Many-to-Many Relationships
Why Other Options Are Incorrect:
Option A: A master-detail from Applicant to Job implies that each Applicant is associated with only one Job.
Option C: A formula field cannot represent a many-to-many relationship.
Option D: A lookup field from Applicant to Job represents a one-to-many relationship, not many-to-many.


質問 # 223
......

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