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Salesforce DEX-450 Exam Tutorial: Programmatic Development using Apex and Visualforce in Lightning Experience - PDF4Test Quality and Value Guaranteed

NEW QUESTION 25 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 private static variable on a helper class
  • 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 member variable on the trigger definition.

Answer: C   NEW QUESTION 26 When importing and exporting data into Salesforce, which two statements are true? Choose 2 answers

  • A. Developer and Developer Pro sandboxes have different storage limits.
  • B. Bulk API can be used to bypass the storage limits when importing large data volumes in development environments.
  • C. Bulk API can be used to import large data volumes in development environments without bypassing the storage limits.
  • D. Data import wizard is a client application provided by Salesforce.

Answer: A,D   NEW QUESTION 27 A developer has a block of code that omits any statements that indicate whether the code block should execute with or without sharing. What will automatically obey the organization-wide defaults and sharing settings for the user who executes the code in the Salesforce organization?

  • A. Apex Triggers
  • B. Anonymous Blocks
  • C. Apex Controllers
  • D. HTTP Callouts

Answer: B   NEW QUESTION 28 What are two ways that a controller and extension can be specified on a Visualforce page? Choose 2 answers

  • A. apex:page controller="Account" extensions="myControllerExtension""
  • B. a@pex:page=Account extends="myControllerExtension"
  • C. Qo apex:page standardController="Account" extensions="myControllerExtension"
  • D. apex:page controllers="Account, myControllerExtension"

Answer: A,C   NEW QUESTION 29 Given: Map<ID, Account> accountMap = new Map>ID, Account> ([SELECT Id, Name FROM Account]); What are three valid Apex loop structures for iterating through items in the collection? (Choose three.)

  • A. for (Integer i=0; I < accountMap.size(); i++) {...}
  • B. for (ID accountID : accountMap) {...}
  • C. for (Account accountRecord : accountMap.values()) {...}
  • D. for (ID accountID : accountMap.keySet()) {...}
  • E. for (Account accountRecord : accountMap.keySet()) {...}

Answer: A,C,D   NEW QUESTION 30 ......