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Salesforce Certified Platform Developer II - Multiple Choice Sample Questions (Q113-Q118):

NEW QUESTION # 113
A Visuzlforce page loads slowly due to the large amount of data it displays.
Which strategy can a developer use to improve the performance?

A. Use Javascript to move data processing to the browser instead of the controller.
B. Use the transient keyword for the List variables used in the custom controller.
C. Use an <apex:actionPollar) in the page to load all of the data asynchronously.
D. Use lazy loading to load the data on demand, instead of in the controller's constructor.

Answer: D

Explanation:
Lazy loading is a strategy to improve the performance of a Visualforce page that loads a large amount of data. By loading the data on demand, rather than in the controller's constructor, the initial page load is faster, and additional data is only loaded when necessary.

NEW QUESTION # 114
A developer created the following test method:

The developer org has five accounts where the name starts with "Test". The developer executes this test in the Developer Console. After the test code runs, which statement is true?

A. The test will fail.
B. There will be no accounts where the name starts with "Test".
C. There will be six accounts where the name starts with "Test".
D. There will be five accounts where the name starts with "Test".

Answer: A

Explanation:
Since the SeeAllData=true annotation is used, the test class does not have its own test data and is relying on the data in the org. The org already has accounts with the name starting with "Test", so the assertion that no accounts should exist after the deletion will fail because the test method only deletes the account that was created within its scope.
Apex Developer Guide

NEW QUESTION # 115
Exhibit:

The test method above tests in Apex trigger that the developer knows will make a lot of queries when a lot of Accounts are simultaneously updated to be customers. The test method fails at the Line 20 because of too many SOQL queries. What is the correct way to fix this?

A. Add Test.startTest() before and Test.stopTest() after both Line 7 of the code and Line 20 of the code
B. Add Test.startTest() before Line 18 of the code and add Test.stopTest() after line 18 of the code
C. Change the DataFactory class to create fewer Accounts so that the number of queries in the trigger is reduced
D. Replace most of the Apex Trigger with Process Builder processes to reduce the number of queries in the trigger

Answer: B

Explanation:
https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_tools_start_stop_test.htm

NEW QUESTION # 116
Universal Containers stores user preferences in a Hierarchy Custom Setting, User_Prefs_c, with a Checkbox field, Show_Help_c. Company-level defaults are stored at the organizational level, but may be overridden at the user level. If a user has not overridden preferences, then the defaults should be used.
How should the Show_Help_c preference be retrieved for the current user?

A. Boolean show = User_Prefs__c.Show_Help__c;
B. Boolean show = User_Prefs__c.getValues(UserInfo.getUserId()).Show_Help__c;
C. Boolean show = User_Prefs__c.getValues().Show_Help__c;
D. Boolean show = User_Prefs__c.getInstance().Show_Help__c;

Answer: D

Explanation:
To retrieve the Show_Help__c preference for the current user from a hierarchy custom setting, the getInstance() method should be used. This method retrieves the custom setting data for the user or the organization default if no user-specific setting is found.

NEW QUESTION # 117
A company uses Dpportunities to track sales to their customers and their org has millions of Opportunities. They want to begin to track revenue over time through a related Revenue object.
As part of their initial implementation, they want to perform a one-time seeding of their data by automatically creating and populating Revenue records for Opportunities, based on complex logic.
They estimate that roughly 100,000 Opportunities will have Revenue records created and populated.
What is the optimal way to automate this?

A. Use Database. =executeBatch() to invoke a Database. Batchable class.
B. Use Database. executeBatch () to invoke a Queueable class.
C. Use system, acheduladeb() to schedule a patakape.Scheduleable class.
D. Use system, enqueuJob (| to invoke a gueusable class.

Answer: A

Explanation:
For a one-time bulk operation on a large data set, using a Database.Batchable class is the best approach. This allows complex logic to be processed in manageable chunks and efficiently manages system resources.

NEW QUESTION # 118
......

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