Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 121:

  A developer needs to display all of the available fields for an object.

  In which two ways can the developer retrieve the available fields if the variable myObject represents the name of the object? (Choose two.)

  A. Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.
  B. Use mySObject.myObject.fields.getMap() to return a map of fields.
  C. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.
  D. Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.
  B. Use mySObject.myObject.fields.getMap() to return a map of fields.
  C. Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.

• Question 122:

  A developer needs to apply the look and feel of lightning experience to a number of applications built using a custom third-party javascript framework and rendered in visualforce pages, which option achieves this?

  A. Set the attribute enablelightning to "true" in the definition
  B. Replace the third-party javascript library with native visualforce tags
  C. Configure the user interface options in the setup menu to enable legacy mode for visualforce
  D. Incorporate salesforce lightning design system css style sheets into the javascript applications
  D. Incorporate salesforce lightning design system css style sheets into the javascript applications

• Question 123:

  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
  A. Initialized only when a class is loaded
  C. Allowed only in outer classes
  E. Excluded from the view state for a Visualforce page

• Question 124:

  A developer creates an Apex Trigger with the following code block:List customers = new List();For (Order__c o: trigger.new){Account a = [SELECT Id, Is_Customer__c FROM Account WHERE Id = :o.Customer__c];a.Is_Customer__c = true;customers.add(a);}Database.update(customers, false);The developer tests the code using Apex Data Loader and successfully loads 10 Orders. Then, the developer loads 150 Orders.How many Orders are successfully loaded when the developer attempts to load the 150 Orders?

  B. 1
  C. 150
  D. 100
  A

• Question 125:

  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.
  B. Build an Account custom Trigger.

• Question 126:

  What are two correct examples of the model in the salesforce MVC architecture? Choose 2 answers.

  A. Custom field on the custom wizard_c object
  B. Standard lightning component
  C. Workflow rule on the contact object
  D. Standard account lookup on the contract object
  B. Standard lightning component
  C. Workflow rule on the contact object

• Question 127:

  A developer is creating an enhancement to an application that will allow people to be related to their employer. Which data model provides the simplest solution to meet the requirements?

  A. Create a lookup realtionship to indicate that a person has an employer
  B. Create a master-detail relationship to indicate that a person has an employer
  C. Create a junction object to relate many people to many through master-detail relationship
  D. Create a junction object to relate many people to many through lookup relationship
  B. Create a master-detail relationship to indicate that a person has an employer

• Question 128:

  Which type of code represents the Model in the MVC architecture when using Apex and Visualforce pages?

  A. A Controller Extension method that saves a list of Account records
  B. Custom JavaScript that processes a list of Account records
  C. A list of Account records returned from a Controller Extension method
  D. A Controller Extension method that uses SOQL to query for a list of Account records
  C. A list of Account records returned from a Controller Extension method

• Question 129:

  Which two statements are true about Apex code executed in Anonymous Blocks? Choose 2 answers

  A. Successful DML operations are automatically committed
  B. All DML operations are automatically rolled back
  C. The code runs with the permissions of the user specified in the runAs() statement
  D. The code runs with the permissions of the logged user.
  E. The code runs in system mode having access to all objects and fields.
  A. Successful DML operations are automatically committed
  D. The code runs with the permissions of the logged user.

• Question 130:

  How can a developer avoid exceeding governor limits when using an Apex Trigger?choose 2 answers

  A. By using a helper class that can be invoked from multiple triggers.
  B. By using the Database class to handle DML transactions.
  C. By using Maps to hold data from query results.
  D. By performing DML transactions on lists of SObjects.
  C. By using Maps to hold data from query results.
  D. By performing DML transactions on lists of SObjects.