Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 1:

  In which order does Salesforce execute events upon saving a record?

  A. Before Triggers; Validation Rules; After Triggers; Assignment Rules; Workflow Rules; Commit
  B. Validation Rules; Before Triggers; After Triggers; Workflow Rules; Assignment Rules; Commit
  C. Before Triggers; Validation Rules; After Triggers; Workflow Rules; Assignment Rules; Commit
  D. Validation Rules; Before Triggers; After Triggers; Assignment Rules; Workflow Rules; Commit
  A. Before Triggers; Validation Rules; After Triggers; Assignment Rules; Workflow Rules; Commit

• Question 2:

  In a single record, a user selects multiple values from a multi-select picklist. How are the selected values represented in Apex?

  A. As a List with each value as an element in the list
  B. As a String with each value separated by a comma
  C. As a String with each value separated by a semicolon
  D. As a Set with each value as an element in the set
  C. As a String with each value separated by a semicolon

• Question 3:

  Which one do you like?

  What should a developer consider for an environment that has over 10,000 Case records?

  A. The transaction will fail due to exceeding the governor limit.
  B. The try/catch block will handle any DML exceptions thrown.
  C. The transaction will succeed and changes will be committed.
  D. The try/catch block will handle exceptions thrown by governor limits.
  A. The transaction will fail due to exceeding the governor limit.

• Question 4:

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

• Question 5:

  A developer creates a custom controller and a custom Visualforce page by using the code block below:

  public class MyController {

  public String myString {

  get {

  if (myString == null) { myString = 'a';

  }

  return myString;

  } private set; } public string getMyString (){

  return 'getMyString';

  } public string getStringMethod () {

  if (myString == null) {

  myString = 'b';

  } return myString;

  }

  } {!StringMethod}, {!myString}, {!myString}

  What can the user expect to see when accessing the custom page?

  A. A, a, a
  B. B, b, b
  C. A, b, getMyString
  D. B, a, getMyString
  A. A, a, a

• Question 6:

  Manage package can be created in which type of org?

  A. Partial copy sandbox
  B. Unlimited edition
  C. Developer Edition
  D. Developer sandbox
  C. Developer Edition

• Question 7:

  What is a valid statement about Apex classes and interfaces? Choose 2 answers:

  A. The default modifier for a class is private.
  B. Exception classes must end with the word exception.
  C. A class can have multiple levels of inner classes.
  D. The default modifier for an interface is private.
  B. Exception classes must end with the word exception.
  D. The default modifier for an interface is private.

• Question 8:

  Universal Containers has an order system that uses an Order Number to identify an order for customers and service agents. Order will be imported into Salesforce.

  A. Lookup
  B. Direct Lookup
  C. Number with External ID
  D. Indirect Lookup
  C. Number with External ID

• Question 9:

  What are two considerations for deciding to use a roll-up summary field? Choose 2 answer's partner.

  A. Roll-up summary can be performed on formula fields, but if their formula contains an #Error result, it may affect the summary value.
  B. Roll-up summary fields do not cause validation rules on the parent object unless that object is edited separately.
  C. Roll-up cannot be performed on formula fields.
  D. Roll-up cannot be performed on formula fields that use cross-object references or on-the-fly calculations such as NOW().
  A. Roll-up summary can be performed on formula fields, but if their formula contains an #Error result, it may affect the summary value.
  D. Roll-up cannot be performed on formula fields that use cross-object references or on-the-fly calculations such as NOW().

• Question 10:

  A developer created a lightning component name accountList.cmp that display a list of Accounts. Client-side logic that is executed when a user hovers over an account in the list should be stored in which bundle member?

  A. AccountListHelper.js
  B. AccountListRenderer.js
  C. AccountList.renderer
  D. AccountList.helper
  C. AccountList.renderer