Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 51:

  What is a capability of formula fields? (Choose 3)

  A. Generate a link using the HYPERLINK function to a specific record in a legacy system.

  B. Display the previous values for a field using the PRIORVALUE function.

  C. Return and display a field value from another object using the VLOOKUP function.

  D. Determine if a datetime field has passed using the NOW function.

  E. Determine which of three different images to display using the IF function.

  Correct Answer: ADE

• Question 52:

  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.

  Correct Answer: ABC

• Question 53:

  When a user edits the Postal Code on an Account, a custom Account text field named "Timezone" must be update based on the values in a PostalCodeToTimezone__c custom object. How should a developer implement this feature?

  A. Build an Account Assignment Rule.

  B. Build an Account custom Trigger.

  C. Build an account Approval Process

  D. Build an Account Workflow Rule.

  Correct Answer: B

• Question 54:

  A developer wants to use all of the functionality provided by the standard controller for an object, but needs to override the Save standard action in a controller extension. Which two are required in the controller extension class?

  A. Create a method named Save with a return data type of PageReference.

  B. Create a method that references this.superSave()

  C. Define the class with a constructor that takes an instance of StandardController as a parameter.

  D. Define the class with a constructor that creates a new instance of the StandardController class.

  Correct Answer: AC

• Question 55:

  A developer has a Apex controller for a Visualforce page that takes an ID as a URL parameter. How should the developer prevent a cross site scripting vulnerability?

  A. ApexPages.currentPage() .getParameters() .get('url_param')

  B. ApexPages.currentPage() .getParameters() .get('url_param') .escapeHtml4()

  C. String.ValueOf(ApexPages.currentPage() .getParameters() .get('url_param'))

  D. String.escapeSingleQuotes(ApexPages.currentPage() .getParameters(). get('url_param'))

  Correct Answer: B

• Question 56:

  A developer creates a new Visualforce page and Apex extension, and writes test classes that exercise 95% coverage of the new Apex extension.Change set deployment to production fails with the test coverage warning: "Average test coverage across all Apex classes and triggers is 74%, at least 75% test coverage is required."

  What can the developer do to successfully deploy the new Visualforce page and extension?

  A. Create test classes to exercise the Visualforce page markup.

  B. Select "Disable Parallel Apex Testing" to run all the tests.

  C. Add test methods to existing test classes from previous deployments.

  D. Select "Fast Deployment'' to bypass running all the tests.

  Correct Answer: C

• Question 57:

  Which tool can deploy destructive changes to apex classes in production?

  A. Workbench

  B. Salesforce setup

  C. Change sets

  D. Developer Console

  Correct Answer: A

• Question 58:

  Which declarative process automation feature supports iterating over multiple records?

  A. Flows

  B. Validation Rules

  C. Approval Process

  D. Workflow rules

  Correct Answer: A

• Question 59:

  What is the preferred way to reference web content such as images, style sheets, JavaScript, and other libraries that is used in Visualforce pages?

  A. By accessing the content from Chatter Files.

  B. By uploading the content in the Documents tab.

  C. By accessing the content from a third -party CON.

  D. By uploading the content as a Static Resource.

  Correct Answer: D

• Question 60:

  How can a custom type be identified as unique when added to a Set?

  A. Methods in the class must be static

  B. The class must implement the Equals and Hashcode methods

  C. Methods in the class must be global

  D. The class must have a method with the @InvocableMethod annotation

  Correct Answer: B