DEX-450 Online Practice Questions and Answers

A developer created a Lightning component to display a short text summary for an object and wants to use it with multiple Apex classes.

How should the developer design the Apex classes?

A. Have each class define method getObject() that returns the sObject that is controlled by the Apex class.

B. Extend each class from the same base class that has a method getTextSummary() that returns the summary.

C. Have each class implement an interface that defines method getTextSummary() that returns the summary.

D. Have each class define method getTextSummary() that returns the summary.

What is a capability of the tag that is used for loading external Javascript libraries in Lightning Component? (Choose three.)

A. Loading files from Documents.

B. One-time loading for duplicate scripts.

C. Specifying loading order.

D. Loading scripts in parallel.

E. Loading externally hosted scripts.

What are two ways a developer can get the status of an enquered job for a class that queueable interface? Choose 2 answers

A. View the apex status Page

B. View the apex flex Queue

C. View the apex Jobs page (Missed)

D. Query the AsyncApexJobe object (Missed)

What is a benefit of the lightning component framework?

A. Better integration with Force.com sites

B. Better performance for custom Salesforce1 Mobile Apps

C. More Centralized control via server-side logic

D. More pre-built components to replicate the salesforce look and feel

When the number of record in a recordset is unknown, which control statement should a developer use to implement a set of code that executes for every record in the recordset, without performing a .size() or .length() method call?

A. For (init_stmt, exit_condition; increment_stmt) { }

B. Do { } While (Condition)

C. For (variable : list_or_set) { }

D. While (Condition) { ... }

Which statement would a developer use when creating test data for products and pricebooks?

A. Id pricebookId = Test.getStandardPricebookId();

B. Pricebook pb = new Pricebook();

C. IsTest(SeeAllData = false);

D. List objList = Test.loadData(Account.sObjectType, 'myResource');

Which declarative method helps ensure quality data? (Choose 3)

A. Validation Rules

B. Workflow alerts

C. Exception Handling

D. Lookup Filters

E. Page Layouts

In an organization that has enabled multiple currencies, a developer needs to aggregate the sum of the Estimated_value__c currency field from the CampaignMember object using a roll-up summary field called Total_estimated_value__c on Campaign.

A. The values in Campaignmember.Estimated_value__c are converted into the currency of the Campaign record and the sum is displayed using the currency on the Campaign record.

B. The values in CampaignMember.Estimated_value__c are converted into the currency on the majority of the CampaignMember records and the sum is displayed using that currency.

C. The values in CampaignMember.Estimated_value__c are summed up and the resulting Total_estimated_value__c field is displayed as a numeric field on the Campaign record.

D. The values In CampaignMember.Estimated_value__c are converted into the currency of the current user, and the sum is displayed using the currency on the Campaign record.

The Sales Management team hires a new intern. The intern is not allowed to view Opportunities, but needs to see the Most Recent Closed Date of all child Opportunities when viewing an Account record. What would a developer do to meet this requirement?

A. Create a trigger on the Account object that queries the Close Date of the most recent Opportunities.

B. Create a Workflow rule on the Opportunity object that updates a field on the parent Account.

C. Create a formula field on the Account object that performs a MAX on the Opportunity Close Date field.

D. Create a roll-up summary field on the Account object that performs a MAX on the Opportunity Close Date field.

A developer wants multiple test classes to use the same set of test data. How should the developer create the test data?

A. Define a variable for test records in each test classes

B. Create a test setup method for each test class

C. Use the seealldata=true annotation in each test class

D. Reference a test utility class in each test class

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 2 answers

A. Use the getrecordtypeinfosbydevelopername() method in the describesobjectresult class

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

C. Execute a SOQL query on the recordtype object

D. Hardcore the ID as a constant in an apex class

A developer in a Salesforce org with 100 Accounts executes the following code using the Developer console:Account myAccount = new Account(Name = 'MyAccount');Insert myAccount;For (Integer x = 0; x < 150; x++)

{Account newAccount = new Account (Name='MyAccount' + x);try {Insert newAccount;} catch (Exception ex) {System.debug (ex) ;}}insert new Account (Name='myAccount');

How many accounts are in the org after this code is run?

A. 101

B. 100

C. 102

D. 252

Account acct = {SELECT Id from Account limit 1}; Given the code above, how can a developer get the type of object from acct?

A. Call "acct.getsObjectType()"

B. Call "Account.getSobjectType()"

C. Call "Account.SobjectType"

D. Call "acct.SobjectType"

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

The initial value for a number field on a record is 1. A user updated the value of the number field to 10. This action invokes a workflow field update, which changes the value of the number field to 11. After the workflow field update, an update trigger fires.What is the value of the number field of the object that is obtained from Trigger.old?

A. Null

B. 11

C. 1

D. 10