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Salesforce Platform Developer II Sample Questions (Q66-Q71):

NEW QUESTION # 66
Which code snippet represents the optimal Apex trigger logic for assigning a Lead's Region based on its PostalCode, using a custom Region__c object?

A. Region__c = r.Region_Name__c;
}
}
}
B. Region__c = zipMap.get(l.PostalCode);
}
}
C. Region__c = reg.Region_Name__c;
}
D. Java
Set<String> zips = new Set<String>();
for(Lead l : Trigger.new) {
if(l.PostalCode != Null) {
zips.add(l.PostalCode);
}
}
for (Lead l : Trigger.new) {
List<Region__c> regions = [SELECT Zip_Code__c, Region_Name__c FROM Region__c WHERE Zip_Code__c IN :zips]; for (Region__c r : regions) { if(l.PostalCode == r.Zip_Code__c) {
E. Java
for (Lead l : Trigger.new) {
Region__c reg = [SELECT Region_Name__c FROM Region__c WHERE Zip_Code__c = :l.
PostalCode];
F. Java
Set<String> zips = new Set<String>();
for(Lead l : Trigger.new) {
if(l.PostalCode != Null) {
zips.add(l.PostalCode);
}
}
List<Region__c> regions = [SELECT Zip_Code__c, Region_Name__c FROM Region__c WHERE Zip_Code__c IN :zips]; Map<String, String> zipMap = new Map<String, String>(); for(Region__c r : regions) { zipMap.put(r.Zip_Code__c, r.Region_Name__c);
}
for(Lead l : Trigger.new) {
if(l.PostalCode != Null) {
G. Region__c = r.Region_Name__c;
}
}
}
H. Java
Set<String> zips = new Set<String>();
for(Lead l : Trigger.new) {
if(l.PostalCode != Null) {
zips.add(l.PostalCode);
}
}
for(Lead l : Trigger.new) {
List<Region__c> regions = [SELECT Zip_Code__c, Region_Name__c FROM Region__c WHERE Zip_Code__c IN :zips]; for(Region__c r : regions) { if(l.PostalCode == r.Zip_Code__c) {

Answer: F

Explanation:
The "optimal" Apex trigger logic is defined by its bulkification and strict adherence to Salesforce governor limits. In Apex, a trigger can process up to 200 records in a single batch. If a developer places a SOQL query inside a loop, the transaction will fail with a System.LimitException if more than 100 records are processed, as the limit is 100 synchronous SOQL queries.
Option A follows the industry-standard "Bulkify, Query, and Map" design pattern:
* Collection: It iterates through the input records once to gather all relevant search criteria (Zip Codes) into a Set.
* External Query: It performs a single SOQL query outside of any loop to fetch all matching Region__c records for the entire batch. This is the most critical step for scalability.
* Mapping: It organizes the results into a Map<String, String> (Zip Code to Region Name). Maps provide $O(1)$ constant-time lookup performance.
* Final Assignment: It iterates through the Leads a second time and assigns the Region using the Map.
Options B, C, and D are all anti-patterns. Option C is the most dangerous, as it executes a query for every single record. Options B and D are slightly better but still redundant, as they execute a query inside a loop that retrieves data already retrieved in previous iterations. Only Option A ensures the code is efficient, bulk-safe, and stays well within governor limits even under heavy data loads.

NEW QUESTION # 67
A developer created a custom component to display an HTML table. The developer wants to be able to use the component on different Visualforce Pages and specify different header text for the table.
Which tag should the developer use inside the component?

A. <apex:attribute>
B. <apex:param>
C. <apex:define>
D. <apex:variable>

Answer: A

NEW QUESTION # 68
Universal Containers implements a private sharing model for the Convention_Attendence_c custom object. As part of a new quality assurance effort, the company created an Event___Reviewer__c user lookup field on the object. Management wants the event reviewer to automatically gain Read/write access to every record they are assigned to.
What is the best approach to ensure the assigned reviewer obtains Read/Write access to the record?

A. Create criteria-based sharing rules on the Convention Attendee custom object to share the records with the Event Reviewers.
B. Create a Before Insert trigger on the Convention Attendee custom object, and use Apex Sharing Reasons and Apex Managed Sharing.
C. Create a criteria-based sharing rule on the Convention Attendee custom object to share the records the a group of Event Reviewers.
D. Create an After Insert trigger on the Convention Attendee custom object, and use Apex Sharing Reasons and Apex Managed Sharing.

Answer: D

NEW QUESTION # 69
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. Change the DataFactory class to create fewer Accounts so that the number of queries in the trigger is reduced
B. Replace most of the Apex Trigger with Process Builder processes to reduce the number of queries in the trigger
C. Add Test.startTest() before and Test.stopTest() after both Line 7 of the code and Line 20 of the code
D. Add Test.startTest() before Line 18 of the code and add Test.stopTest() after line 18 of the code

Answer: D

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

NEW QUESTION # 70
Which two relationship queries use the proper syntax? (Choose two.)
SELECT Id, Name, Account__r.Name FROM Contact WHERE Account__r.Industry

A. SELECT Name, (SELECT LastName FROM Contacts__r) FROM Account
B. 'Media'
C. SELECT Id, Name, Account.Name FROM Contact WHERE Account.Industry = 'Media'
D. SELECT Name, (SELECT LastName FROM Contacts) FROM Account

Answer: C,D

NEW QUESTION # 71
......

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