Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 421:

  Account acct = {SELECT Id from Account limit 1}; Given the code above, how can a developer get the type of object from acct?

  A. Call "acct.getsObjectType()"
  B. Call "Account.getSobjectType()"
  C. Call "Account.SobjectType"
  D. Call "acct.SobjectType"
  A. Call "acct.getsObjectType()"

• Question 422:

  A developer needs to create a Visualforce page that will override the standard Account edit button. The page will be used to validate the account's address using a SOQL query. The page will also allow the user to make edits to the address. Where would the developer write the Account address verification logic?

  A. In a Standard Extension.
  B. In a Standard Controller.
  C. In a Custom Controller.
  D. In a Controller Extension.
  D. In a Controller Extension.

• Question 423:

  A developer wants multiple test classes to use the same set of test data. How should the developer create the test data?

  A. Define a variable for test records in each test classes
  B. Create a test setup method for each test class
  C. Use the seealldata=true annotation in each test class
  D. Reference a test utility class in each test class
  C. Use the seealldata=true annotation in each test class

• Question 424:

  A Next Best Action strategy uses an Enhance Element that invokes an Apex method to determine a discount level for a Contact, based on a number of factors. What is the correct definition of the Apex method?

  A. @InvocableMethod global static ListRecommendation getLevel(List input) { /*implementation*/ }
  B. @InvocableMethod global static List getLevel (List input) { /*implementation */ }
  C. @InvocableMethod global List getlevel(List input) { /*implementation */ }
  D. @InvocableMethod global Recommendation getlevel(ContactWrapper input) { /*implementation */ }
  B. @InvocableMethod global static List getLevel (List input) { /*implementation */ }

• Question 425:

  A Visual force page displays two fields named Phone Number and Email.User1 has access to Phone Number, but not to Email.User2 has access to Email, but not Phone NumberA developer needs to ensure that User1 can only see Phone Number, and User2 can only see Email.

  Which method can the developer use to achieve this?

  A. Schema isUpdateable() method.
  B. Schema isAccessible() method.
  C. Schema isReadable() method.
  D. Schema isCreateable() method.
  B. Schema isAccessible() method.

• Question 426:

  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. HTTP Callouts
  C. Apex Controllers
  D. Anonymous Blocks
  D. Anonymous Blocks

• Question 427:

  How should a custom user interface be provided when a user edits an Account in Lightning Experience?

  A. Override the Account's Edit button with Lightning Flow
  B. Override the Account's Edit button with Lightning Action
  C. Override the Account's Edit button with Lightning page.
  D. Override the Account's Edit button with Lightning component.
  D. Override the Account's Edit button with Lightning component.

• Question 428:

  What is an accurate statement about variable scope? (Choose 3)

  A. Parallel blocks can use the same variable name.
  B. A variable can be defined at any point in a block.
  C. Sub-blocks cannot reuse a parent block's variable name.
  D. Sub-blocks can reuse a parent block's variable name if it's value is null.
  E. A static variable can restrict the scope to the current block of its value is null.
  A. Parallel blocks can use the same variable name.
  B. A variable can be defined at any point in a block.
  C. Sub-blocks cannot reuse a parent block's variable name.

• Question 429:

  Which two queries can a developer use in a Visualforce controller to protect against SOQL injection vulnerabilities? Choose 2 answers

  A. String qryName = % + String.enforceSecurityChecks(name)+ % ; String qryString = SELECT Id FROM Contact WHERE Name LIKE :qryNAme ; List queryResults = Database.query(qryString);
  B. String qryName = % + name % ; String qryString = SELECT Id FROM Contact WHERE Name LIKE :qryNAme ;
  C. List queryResults = Database.query(qryString);
  D. String qryName = % + String.escapeSingleQuotes(name)+ % ; String qryString = SELECT Id FROM Contact WHERE Name LIKE :qryNAme ; List queryResults = Database.query(qryString);
  E. String qryString = SELECT Id FROM Contact WHERE Name LIKE :qryNAme ; List queryResults = Database.query(qryString);
  B. String qryName = % + name % ; String qryString = SELECT Id FROM Contact WHERE Name LIKE :qryNAme ;
  C. List queryResults = Database.query(qryString);

• Question 430:

  What are two valid options for iterating through each Account in the collection List named AccountList? Choose 2 answers.

  A. For (List L : AccountList) {...}
  B. For (Account theAccount : AccountList){...}
  C. For(AccountList){...}
  D. For (Integer i=0; i
  B. For (Account theAccount : AccountList){...}
  D. For (Integer i=0; i