[2024年02月19日] 合格させるCRT-450レビューガイド、信頼され続けるCRT-450テストエンジン
CRT-450テストエンジン練習テスト問題、試験問題集
質問 # 133
Which action can a developer take to reduce the execution time of the following code?
- A. Put the Account loop inside the Contact loop.
- B. Create an Apex helper class for SOQL.
- C. Use a Map<Id List<Contact> for allContacts.
- D. Add a GROUP BY clause to the Contact SOQL.
正解：C
質問 # 134
A developer needs to create a custom Interface in Apex.
Which three considerations must the developer keep in mind while developing the Apex Interface?
Choose 3 answers
- A. A method defined In an Apex Interface cannot have an access modifier.
- B. The Apex class must be declared using the interface keyword.
- C. A method implementation can be defined within the Apex Interface.
- D. The Apex interface class access modifier can be set to Private, Public, or Global.
- E. New methods can be added to a public interface within a released package.
正解：A、B、C
質問 # 135
What should be used to create scratch orgs?
- A. Sandbox refresh
- B. Developer Console
- C. Salesforce CLI
- D. Workbench
正解：C
解説：
Scratch orgs are short-term Salesforce environments that you can spin up to work on a feature. They are source-driven, disposable, and fully configurable. To create scratch orgs, you need to use the Salesforce CLI, which is a command-line tool that lets you interact with Salesforce orgs and perform various tasks. You can use the Salesforce CLI to create a scratch org definition file, which specifies the features and settings of the scratch org, and then run the force:org:create command to create the scratch org. You can also use the force:org:open command to open the scratch org in a browser without logging in.
References: The use of Salesforce CLI to create scratch orgs can be referenced in the Salesforce Platform Developer I learning documents, specifically in modules that cover Salesforce DX and scratch orgs, such as:
* Get Started with Salesforce DX
* Scratch Orgs
* Develop in Scratch Orgs
質問 # 136
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to Include helper methods that are not used by the Web Application In the Implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?
A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option A
- D. Option C
正解：D
質問 # 137
A developer creates an Apex Trigger with the following code block:List<Account> customers = new List<Account>();For (Order__c o: trigger.new){Account a = [SELECT Id, Is_Customer__c FROM Account WHERE Id
:o.Customer__c];a.Is_Customer__c = true;customers.add(a);}Database.update(customers, false);The developer tests the code using Apex Data Loader and successfully loads 10 Orders. Then, the developer loads 150 Orders.How many Orders are successfully loaded when the developer attempts to load the 150 Orders?
- A. 0
- B. 1
- C. 2
- D. 3
正解：A
質問 # 138
Which action causes a before trigger to fire by default for Accounts?
- A. Renaming or replacing picklist
- B. Importing data using the Data Loader and the Bulk API
- C. Converting Leads to Contact accounts
- D. Updating addresses using the Mass Address update tool
正解：B
質問 # 139
Which two settings must be defined in order to update a record of a junction object? Choose 2 answers
- A. Read/Write access on the secondary relationship
- B. Read/Write access on the junction object
- C. Read/Write access on the primary relationship
- D. Read access on the primary relationship
正解：A、C
質問 # 140
What is the preferred way to reference web content such as images, style sheets, JavaScript, and other libraries that is used in Visualforce pages?
- A. By accessing the content from Chatter Files.
- B. By accessing the content from a third -party CON.
- C. By uploading the content in the Documents tab.
- D. By uploading the content as a Static Resource.
正解：D
質問 # 141
A developer at Universal Containers is taked with implementing a new Salesforce application that bwill be maintained completely by their company's Salesforce admiknistrator.
Which two options should be considered for buildig out the business logic layerof the application?
Chosse 2 answer
- A. Record-Triggered flows
C, Scheduled - B. Validation Rules
- C. Unvocable Actions
正解：A、B
質問 # 142
Which two automation tools include a graphical designer? Choose 2 answers
- A. Flow builder
- B. Approvals
- C. Process builder
- D. Workflows
正解：A、B
質問 # 143
An Apex transaction inserts 100 Account records and 2,000 Contact records before encountering a DML exception when attempting to insert 500 Opportunity records.
The Account records are inserted by calling the database.insert() method with the allOrNone argument set to false. The Contact and Opportunity records are inserted using the standalone insert statement.
How many total records will be committed to the database in this transaction?
- A. 0
- B. 2,100
- C. 1
- D. 2,000
正解：A
質問 # 144
A lead object has a custom field Prior_Email__c. The following trigger is intended to copy the current Email into the Prior_Email__c field any time the Email field is changed:
Which type of exception will this trigger cause?
- A. A compile time exception
- B. A DML exception
- C. A limit exception when doing a bulk update
- D. A null reference exception
正解：B
質問 # 145
Which two number expressions evaluate correctly? (Choose two.)
- A. Decimal d = 3.14159;
- B. Integer I = 3.14159;
- C. Long l = 3.14159;
- D. Double d = 3.14159;
正解：A、D
質問 # 146
A developer has the controller class below.
Which code block will run successfully in an execute anonymous window?
- A. myFooController m = new myFooController();System.assert(m.prop !=null);
- B. myFooController m = new myFooController();System.assert(m.prop ==0);
- C. myFooController m = new myFooController();System.assert(m.prop ==null);
- D. myFooController m = new myFooController();System.assert(m.prop ==1);
正解：C
質問 # 147
While working in a sandbox, an Apex test fails when run in the Test Runner. However, executing the Apex logic in the Execute Anonymous window succeeds with no exceptions or errors.
Why did the method fail in the sandbox test framework but succeed in the Developer Console?
- A. The test method relies on existing data in the sandbox.
- B. The test method Is calling an future method.
- C. The test method has a syntax error In the code.
- D. The test method does not use System. rurAs to execute as a specific user.
正解：A
解説：
The test method fails in the sandbox test framework because it relies on existing data in the sandbox, which may not be consistent or available for the test execution. The Apex test framework uses a separate test data context that is rolled back after the test execution, so any data that is queried or inserted by the test method must be created within the test method or by using the @testSetup annotation. The Execute Anonymous window, on the other hand, runs the Apex logic in the current user context and can access the existing data in the sandbox. Therefore, the Apex logic may succeed in the Execute Anonymous window but fail in the test framework. References:
* Apex Testing (Salesforce Developer Documentation)
* Isolation of Test Data from Organization Data in Unit Tests (Salesforce Developer Documentation)
* Free Salesforce Platform Developer 1 Practice Exam (With Answers) (Salesforce Ben)
質問 # 148
A developer is asked to create a PDF quote document formatted using the company's branding guidelines, and automatically save it to the Opportunity record.
Which two ways should a developer create this functionality? (Choose two.)
- A. Create a Visualforce page with custom styling.
- B. Create an email template and use it in Process Builder.
- C. Create a visual flow that implements the company's formatting.
- D. Install an application from the AppExchange to generate documents.
正解：A、D
質問 # 149
Universal Container wants Opportunities to no longer be editable when reaching the Clousd stage.
How should a develoiper accomplish this?
- A. Use flow Builder
- B. Use a validation rule.
- C. Use the Process Automation setting.
- D. Mark fields as read-only on the page layout.
正解：B
質問 # 150
Universal Containers hires a developer to build a custom search page to help user- find the Accounts they want. Users will be able to search on Name, Description, and a custom comments field.
Which consideration should the developer be aware of when deciding between SOQL and SOSL?
Choose 2 answers
- A. SOQL is faster for text searches.
- B. SOQL is able to return more records.
- C. SOSL is able to return more records.
- D. SOSL is faster for tent searches.
正解：B、D
質問 # 151
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