Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 451:

  What are three characteristics of static methods? (Choose three.)

  A. Initialized only when a class is loaded

  B. A static variable outside of the scope of an Apex transaction

  C. Allowed only in outer classes

  D. Allowed only in inner classes

  E. Excluded from the view state for a Visualforce page

  Correct Answer: ACE

• Question 452:

  A platform developer at Universal Containers needs to create a custom button for the Account object that, when clicked, will perform a series of calculations and redirect the user to a custom Visualforce page.

  Which three attributes need to be defined with values in the tag to accomplish this? (Choose three.)

  A. action

  B. renderAs

  C. standardController

  D. readOnly

  E. extensions

  Correct Answer: ABC

• Question 453:

  Given:

  Map 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 (ID accountID : accountMap.keySet()) {...}

  B. for (Account accountRecord : accountMap.values()) {...}

  C. for (Integer i=0; I < accountMap.size(); i++) {...}

  D. for (ID accountID : accountMap) {...}

  E. for (Account accountRecord : accountMap.keySet()) {...}

  Correct Answer: ABC

• Question 454:

  What are two benefits of the Lightning Component framework? (Choose two.)

  A. It simplifies complexity when building pages, but not applications.

  B. It provides an event-driven architecture for better decoupling between components.

  C. It promotes faster development using out-of-box components that are suitable for desktop and mobile devices.

  D. It allows faster PDF generation with Lightning components.

  Correct Answer: BC

• Question 455:

  A Visualforce page is required for displaying and editing Case records that includes both standard and custom functionality defined in an Apex class called myControllerExtension.

  The Visualforce page should include which attribute(s) to correctly implement controller functionality?

  A. controller="Case" and extensions="myControllerExtension"

  B. extensions="myControllerExtension"

  C. controller="myControllerExtension"

  D. standardController="Case" and extensions="myControllerExtension"

  Correct Answer: D

• Question 456:

  A Platform Developer needs to write an Apex method that will only perform an action if a record is assigned to a specific Record Type.

  Which two options allow the developer to dynamically determine the ID of the required Record Type by its name? (Choose two.)

  A. Make an outbound web services call to the SOAP API.

  B. Hardcode the ID as a constant in an Apex class.

  C. Use the getRecordTypeInfosByName() method in the DescribeSObjectResult class.

  D. Execute a SOQL query on the RecordType object.

  Correct Answer: CD