Salesforce CRT-450 問題集

質問 1：
Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the Apex class, BodyFat, and its method, calculateBodyFat (). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizations outside the ISV's package namespace.
Which approach should a developer take to ensure calculateBodyFat () is accessible outside the package namespace?
A. Declare the class as global and use the public access modifier on the method.
B. Declare the class and method using the public access modifier.
C. Declare the class as public and use the global access modifier on the method.
D. Declare the class and method using the global access modifier.
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 2：
Universal Containers wants to assess the advantages of declarative development versus programmatic customization for specific use cases in its Salesforce implementation.
What are two characteristics of declarative development over programmatic customization?
Choose 2 answers
A. Declarative development has higher design limits and query limits.
B. Declarative development can be done using the Setup menu.
C. Declarative code logic does not require maintenance or review.
D. Declarative development does not require Apex test classes.
正解：B,D
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Universal Containers recently transitioned from Classic to Lightning Experience.
One of its business processes requires certain values from the Opportunity cbject to be sent via an HTTP REST callout to its external order management system when the user presses a custom button on the Opportunity detail page. Example values are as follows:
* 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 (Callour=true) to perform the HTTP REST callout.
B. Create a Lightning component quick action that performs the HTTP REST callout, and use a Lightning Action to expose the component on the Opportunity detail page.
C. Create a custom Visualforce quick action that performs the HTTP REST callout, and use a Visualforce quick action to expose the component on the Opportunity detail page.
D. Create a Remote Action on the Opportunity object that executes an Apex immediate action to perform the HTTP REST callout whenever the Opportunity Is updated.
正解：B,C
解説: (Topexam メンバーにのみ表示されます)

質問 4：
A lead developer creates an Apex interface called Laptop.
Consider the following code snippet:

How can a developer use the Laptop Interface within the silverzaptop class?
A. Extends (class="Laptop") publiic claas Silverlaptcp
B. public class Silverlaptop extends Lapctop
C. public class Silverlaprop implementa Laptop
D. Interface (class="Laptop") public class Silverlaptop
正解：C

質問 5：
What are two use cases for executing Anonymous Apex code?
Choose 2 answers
A. To add unit test code coverage to an org
B. To delete 15,000 inactive Accounts in a single transaction after a deployment
C. To schedule an Apex class to run periodically
D. To run a batch Apex class to update all Contacts
正解：C,D
解説: (Topexam メンバーにのみ表示されます)

質問 6：
An Apex method, getAccounts, that returns a list of Accounts given a searchTerm, is available for Lightning Web Components to use.
What is the correct definition of a Lightning Web Component property that uses the getAccounts method?
A.

B.

C.

D.

正解：D

質問 7：
A developer is creating an app that contains multiple Lightning web components.
One of the child components is used for navigation purposes. When a user clicks a button called Next in the child component, the parent component must be alerted so it can navigate to the next page.
How should this be accomplished?
A. Call a method in the Apex controller.
B. Fire a notification.
C. Update a property on the parent.
D. Create a custom event,
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 8：
A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Within the class, the developer identifies the following method as a security threat:

What are two ways the developer can update the method to prevent a SOQL injection attack?
Choose 2 answers
A. Use the escapeSingleQuotes method to sanitize the parameter before its use.
B. Use the @Readonly annotation and the with sharing keyword on the class
C. Use a regular expression expression on the parameter to remove special characters,
D. Use variable binding and replace the dynamic query with a static SOQL.
正解：A,D

質問 9：
Universal Containers (UC) processes orders in Salesforce in a custom object, ord=xr <. They also allow sales reps to upload CSV files with thousands of orders at a time.
A developer is tasked with integrating orders placed in Salesforce with UC's enterprise resource planning (ERP) system.
After the status for an order__ c is first set to 'Placed', the order information must be sent to a REST endpoint in the ERP system that can process one order at a time.
What should the developer implement to accomplish this?
A. Callout from a Batchable class called from a scheduled job
B. Flow with a callout from an invocable method
C. Callout from a Queueable class called from a trigger
D. Callout from an Qfuture method called from a trigger
正解：C
解説: (Topexam メンバーにのみ表示されます)