Salesforce TVB-450 問題集

質問 1：
A developer has an integer variable called maxAttempts. The developer meeds to ensure that once maxAttempts is initialized, it preserves its value for the lenght 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?
A. Declare maxattempts as a member variable on the trigger definition.
B. Declare maxattempts as a variable on a helper class
C. Declare maxattempts as a constant using the static and final keywords
D. Declare maxattempts as a private static variable on a helper class
正解：C

質問 2：
What should a developer do to check the code coverage of a class after running all tests?
A. View the Code Coverage column in the list on the Apex Classes page.
B. Select and run the class on the Apex est Execution page in the Developer Console.
C. View the code coverage percentage or the class using the Overalll code Coverage panel in the Developer Console Test tab.
D. View the Class test Percentage tab on the Apex Class list view in Salesforce Setup.
正解：D

質問 3：
Which scenario is valid for execution by unit tests?
A. Set the created date of a record using a system method.
B. Execute anonymous Apex as a different user.
C. Load data from a remote site with a callout.
D. Generate a Visualforce PDF with geccontentAsPDF ().
正解：A

質問 4：
niversal Containers (UC) processes orders in Salesforce in a custom object, Crder_c. They also allow sales reps to upload CSV files with 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 Craer__c is first set to "Placed', the order information must be sent to a REST endpoint in the ERP system that can process ne order at a time.
What should the developer implement to accomplish this?
A. Callout from an surare method called from a trigger
B. Callout from a Sarchabie class called from a scheduled job
C. Flow with 2 callout from an invocable method
D. Callout from a queseatie class called from a trigger
正解：A

質問 5：
The following code snippet is executed by a Lightning web component in an environment with more than 2,000 lead records:

Which governor limit will likely be exceeded within the Apex transaction?
A. Total number of records retrieved by SOQL queries
B. Total number of DML statement issued
C. Total number of SOQL queries issued
D. Total number of records processed as a result of DML statements
正解：A

質問 6：
A developer must create a lightning component that allows users 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 levelpermissions on salary__C?
A. <lightning-input-currency value="Salary__c">
</lightning-input-currency>
B. <ligthning-input-field field-name="Salary__c">
</lightning-input-field>
C. <lightning-formatted-number value="Salary__c" format-style="currency">
</lightning-formatted-number>
D. <lightning-input type="number" value="Salary__c" formatter="currency">
</lightning-input>
正解：B

質問 7：
A developer writes a trigger on the Account object on the before update event that increments a count field. A workflow rule also increments the count field every time that an Account is created or updated. The field update in the workflow rule is configured to not re-evaluate workflow rules.
What is the value of the count field if an Account is inserted with an initial value of zero, assuming no other automation logic is implemented on the Account?
A. 2
B. 3
C. 4
D. 1
正解：A