CRT-450問題集、Salesforce実際の試験問題

質問 1

The following Apex method is part of the ContactService class that is called from a trigger:

How should the developer modify the code to ensure best practices are met?
A)

B)

C)

D)

A. Option A

B. Option C

C. Option B

D. Option D

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 2

Universal Containers wants to ensure that all new leads created in the system have a valid email address. They have already created a validation rule to enforce this requirement, but want to add an additional layer of validation using automation.
What would be the best solution for this requirement?

A. Use an Approval Process to enforce the completion of a valid email address using an outbound message action.

B. Use a before-save Apex trigger on the Lead object to validate the email address and display an error message if it is invalid

C. Submit a REST API Callout with a JSON payload and validate the fields on a third party system

D. Use a custom Lightning Web component to make a callout to validate the fields on a third party system.

正解: B

解説: (PassTest メンバーにのみ表示されます)

質問 3

What are three considerations when using the @lnvocableMethod annotation in Apex?
Choose 3 answers

A. Only one method using the @invecableMethod annotation can be defined per Apex class_

B. A method using the @invocableMethod annotation can be declared as Public or Global.

C. A method using the @invecableMethod annotation can have multiple input parameters.

D. A method using the @invocablemethod annotation must be declaredas static,

E. GO A method using the @invocablemethod annotation must define a return value.

正解: A,B,D

解説: (PassTest メンバーにのみ表示されます)

質問 4

Which three steps allow a custom Scalable Vector Graphic (SVG) to be included in a Lightning web component?
Choose 3 answers

A. Reference the property in the HTML template.

B. Reference the import in the HTML template.

C. Upload the SVG as a static resource.

D. Import the static resource and provide a JavaScript property for it.

E. Import the SVG as a content asset file.

正解: B,C,D

解説: (PassTest メンバーにのみ表示されます)

質問 5

Which two are best practices when it comes to Aura component and application event handling?
Choose 2 answers

A. Handle low-level events in the event handler and re-fire them as higher-level events.

B. Try to use application events as opposed to component events.

C. Use component events to communicate actions that should be handled at the application level.

D. Reuse the event logic in a component bundle, by putting the logic in the helper.

正解: A,D

解説: (PassTest メンバーにのみ表示されます)

質問 6

A Next Best Action strategy uses an Enhance Element that invokes an Apex method to determine a discount level for a Contact, based on a number of factors.
What is the correct definition of the Apex method?

A. apex
Copy
@InvocableMethod
global static List<Recommendation> getLevel(List<ContactWrapper> input){ /*implementation*/ }

B. apex
Copy
@InvocableMethod
global Recommendation getLevel(ContactWrapper input){ /*implementation*/ }

C. apex
Copy
@InvocableMethod
global List<List<Recommendation>> getLevel(List<ContactWrapper> input){ /*implementation*/ }

D. apex
Copy
@InvocableMethod
global static List<List<Recommendation>> getLevel(List<ContactWrapper> input){ /*implementation*/ }

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 7

The orderHelper class is a utility class that contains business logic for processing orders. Consider the following code snippet:
Public class without sharing orderHelper {// code implementation
}
A developer needs to create a constant named delivery_multiplier with a value of 4.15. The value of the constant should not change at any time in the code.
How should the developer declare the delivery multiplier constant to meet the business objectives?

A. static final decimal DELIVERY_MULTIPLIER = 4.15;

B. decimal DELIVERY_MULTIPLIER = 4.15;

C. constant decimal DELIVERY_MULTIPLIER = 4.15;

D. static decimal DELIVERY_MULTIPLIER = 4.15;

正解: A

解説: (PassTest メンバーにのみ表示されます)

質問 8

A developer created these three Rollup Summary fields in the custom object, Project__c:
The developer is asked to create a new field that shows the ratio between rejected and approved timesheets for a given project.
Which should the developer use to implement the business requirement in order to minimize maintenance overhead?

A. Record-triggered flow

B. Apex trigger

C. Formula field

D. Roll-up summary field

正解: C

解説: (PassTest メンバーにのみ表示されます)

質問 9

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:
ist<Contact> performSearch (String lastName} [
return Database.query('SELECT Id, FirstName, LastName FROM Contact WHERE LastName Like s'+lastName+'s'")?; What are two ways the developer can update the method to prevent a SOQL injection attack?
Choose 2 answers

A. Use a regular expression on the parameter to remove special characters.

B. Use variable binding and replace the dynamic query with a static SOQL.

C. Use the sacapeSingleQuotes method to sanitize the parameter before its use.

D. Use the Readonly annotation and the with sharing keyword on the class.

正解: B,C

解説: (PassTest メンバーにのみ表示されます)

質問 10

A developer is implementing an Apex class for a financial system. Within the class, the variables
'creditAmount' and 'debitAmount' should not be able to change once a value is assigned.
In which two ways can the developer declare the variables to ensure their value can only be assigned one time?
Choose 2 answers

A. Use the final keyword and assign its value when declaring the variable.

B. Use the static keyword and assign its value in the class constructor.

C. Use the static keyword and assign its value in a static initializer.

D. Use the final keyword and assign its value in the class constructor.

正解: A,D

解説: (PassTest メンバーにのみ表示されます)

Salesforce Certified Platform Developer I - CRT-450 模擬練習