Exactprep PDI Questions

[Reference: Apex Governor Limits - DML Statements, , Analyzing the Code Against Limits:, Number of DML Statements Used:, The code performs one DML statement per iteration., Total DML statements attempted: 500., Governor Limit Exceeded:, After 150 DML statements, the code exceeds the limit., At the 151st insert, a LimitException is thrown., Number of Accounts Successfully Inserted:, Only the first 150 accounts are inserted before the exception halts execution., , Option Analysis:, Option A: 100, Explanation: This would imply a limit at 100 DML statements, which is incorrect., Conclusion: Incorrect., , Option B: 0, Explanation: This would suggest that no accounts are inserted, possibly due to an exception thrown before any DML operations., Conclusion: Incorrect, as 150 accounts are inserted before hitting the limit., , Option C: 500, Explanation: This would mean all accounts are inserted successfully., Conclusion: Incorrect, because the governor limit prevents more than 150 DML statements., , Option D: 150, Explanation: Matches the maximum allowed DML statements before hitting the governor limit., Conclusion: Correct., , Optimizing the Code:, Bulk DML Operations:, Best Practice: Perform DML operations on lists rather than individual records to reduce the number of DML statements., Optimized Code:, , List accountList = new List();, for (Integer i = 0 ; i < 500; i++) {, Account a = new Account (Name='New Account ' + i);, accountList.add(a);, }, insert accountList;, Benefits:, Only one DML statement is used (insert accountList)., All 500 accounts are inserted successfully., Reference: Apex Developer Guide - Bulk DML Operations, , Final Answer:, D. 150, , Additional Notes:, Governor Limits Enforcement:, Salesforce enforces governor limits to ensure efficient use of resources in a multi-tenant environment., Exceeding limits results in a runtime exception (System.LimitException) that cannot be caught., Exception Handling:, In this scenario, a System.LimitException is thrown, which cannot be handled by try-catch blocks., Reference: Apex Developer Guide - Uncatchable Exceptions, Best Practices Summary:, Use Collections for DML Operations: Process records in bulk using lists or maps., Avoid Loops with DML Statements: Do not place DML operations inside loops., Reference: Apex Developer Guide - Best Practices for DML Operations, ]

[:, Debugging with System.debug, Best Practices for Debugging, Why Other Options are Less Optimal or Incorrect:, Option B: Use the Apex Interactive Debugger to step through the code, Limited Availability: The Apex Interactive Debugger is not typically available in production environments., Requires Setup: Needs special permissions and setup, which may not be feasible., Reference: Apex Debugger, Option C: Disable the trigger in production and test to see if the issue still occurs, Risky: Disabling the trigger can disrupt business processes and data integrity., Not a Debugging Strategy: Does not help identify the cause within the code., Reference: Managing Apex Triggers, Option D: Review the Historical Event Logs to identify the source of the issue, Insufficient Detail: Event logs may not provide the necessary detail about code execution to identify the issue., Better for Auditing: More suited for tracking user actions rather than debugging code., Reference: Event Monitoring, Conclusion:, Adding System.debug statements and reviewing the resulting debug logs is the most appropriate and effective method to troubleshoot and identify the issue causing record duplication., It allows the developer to understand the code execution flow and make necessary corrections., ]