Salesforce CRT-450 Online Practice Questions and Exam Preparation

Salesforce CRT-450 Online Questions & Answers

• Question 211:

  In terms of the MVC paradigm, what are two advantages of implementing the layer of a Salesforce application using Aura Component-based development over Visualforce? Choose 2 answers

  A. Self-contained and reusable units of an application
  B. Rich component ecosystem
  C. Automatic code generation
  D. Server-side run-time debugging
  A. Self-contained and reusable units of an application
  B. Rich component ecosystem

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  Explanation/Reference:

• Question 212:

  An org has a single account named `NoContacts' that has no related contacts. Given the query:

  List accounts = [Select ID, (Select ID, Name from Contacts) from Account where Name=`NoContacts'];

  What is the result of running this Apex?

  A. accounts[0].contacts is invalid Apex.
  B. accounts[0].contacts is an empty Apex.
  C. accounts[0].contacts is Null.
  D. A QueryException is thrown.
  B. accounts[0].contacts is an empty Apex.

• Question 213:

  Which approach should be used to provide test data for a test class?

  A. Query for existing records in the database.
  B. Execute anonymous code blocks that create data.
  C. Use a test data factory class to create test data.
  D. Access data in @TestVisible class variables.
  C. Use a test data factory class to create test data.

• Question 214:

  The following Apex method is part of the ContactServiceclass that is called from a trigger:

  

  How should the developer modify the code to ensure best practices are met?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

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  Explanation/Reference:

• Question 215:

  A developer must create a Lightning component that allows users to input Contact record information to create a Contact record, including a Salary__ccustom field.

  What should the developer use, along with a lightning-record-edit-form, so that Salary__c field functions as a currency input and is only viewable and editable by users that have the correct field level permissions on Salary__c?

  A

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  Explanation/Reference:

• Question 216:

  Which control statement should a developer use to ensure that a loop body executes at least once?

  A. For(variable : list_or_set){}
  B. While (condition){}
  C. For(init_stmt;exit_cond;increment){}
  D. Do {} while (cond)
  D. Do {} while (cond)

• Question 217:

  What should a developer working in a sandbox use to exercise a new test Class before the developer deploys that test production?Choose 2 answers

  A. The REST API and ApexTestRun method
  B. The Apex Test Execution page in Salesforce Setup.
  C. The Test menu in the Developer Console.
  D. The Run Tests page in Salesforce Setup.
  B. The Apex Test Execution page in Salesforce Setup.
  C. The Test menu in the Developer Console.

• Question 218:

  Universal Containers has implemented an order management application. Each Order can have one or more Order Line items. The Order Line object is related to the Order via a master-detail relationship. For each Order Line item, the total price is calculated by multiplying the Order Line item price with the quantity ordered.

  What is the best practice to get the sum of all Order Line item totals on the Order record?

  A. Roll-up summary field
  B. Quick action
  C. Apex trigger
  D. Formula field
  A. Roll-up summary field

• Question 219:

  A developer has an 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. String.escapeSingleQuotes(ApexPages.currentPage().getParameters().get('url_param'))
  C. String.ValueOf(ApexPages.currentPage().getParameters().get('url_param'))
  D. ApexPages.currentPage().getParameters().get('url_param').escapeHtml4()
  D. ApexPages.currentPage().getParameters().get('url_param').escapeHtml4()

• Question 220:

  Universal Containers wants Opportunities to be locked from editing when reaching the Closed/Won stage.

  Which two strategies should a developer use to accomplish this? (Choose two.)

  A. Use a Flow Builder.
  B. Use a validation rule.
  C. Use the Process Automation Settings.
  D. Mark fields as read-only on the page layout.
  B. Use a validation rule.
  D. Mark fields as read-only on the page layout.