Salesforce Salesforce Certifications DEX-450 Questions & Answers

• Question 441:

  Which SOQL query successfully returns the Accounts grouped by name?

  A. SELECT Type, Max(CreatedDate) FROM Account GROUP BY Name

  B. SELECT Name, Max(CreatedDate) FROM Account GROUP BY Name

  C. SELECT Id, Type, Max(CreatedDate) FROM Account GROUP BY Name

  D. SELECT Type, Name, Max(CreatedDate) FROM Account GROUP BY Name LIMIT 5

  Correct Answer: B

• Question 442:

  While writing a test class that covers an OpportunityLineItem trigger, a Developer is unable to create a standard PriceBook since one already exists in the org.

  How should the Developer overcome this problem?

  A. Use Test.getStandardPricebookId() to get the standard PriceBook ID.

  B. Use @IsTest(SeeAllData=true) and delete the existing standard PriceBook.

  C. Use Test.loadData() and a Static Resource to load a standard Pricebook.

  D. Use @TestVisible to allow the test method to see the standard PriceBook.

  Correct Answer: A

• Question 443:

  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

  Correct Answer: C

• Question 444:

  Why would a developer consider using a custom controller over a controller extension?

  A. To increase the SOQL query governor limits.

  B. To implement all of the logic for a page and bypass default Salesforce functionality

  C. To leverage built-in functionality of a standard controller

  D. To enforce user sharing settings and permissions

  Correct Answer: B

• Question 445:

  What should a developer use to implement an automatic Approval Process submission for Cases?

  A. An Assignment Rule

  B. Scheduled Apex

  C. Process Builder

  D. A Workflow Rule

  Correct Answer: C

• Question 446:

  How should a developer make sure that a child record on a custom object, with a lookup to the Account object, has the same sharing access as its associated account?

  A. Create a Sharing Rule comparing the custom object owner to the account owner.

  B. Create a validation rule on the custom object comparing the record owners on both records.

  C. Include the sharing related list on the custom object page layout.

  D. Ensure that the relationship between the objects is Master-Detail.

  Correct Answer: D

• Question 447:

  A developer working on a time management application wants to make total hours for each timecard available to application users. A timecard entry has a Master-Detail relationship to a timecard.

  Which approach should the developer use to accomplish this declaratively?

  A. A Visualforce page that calculates the total number of hours for a timecard and displays it on the page

  B. A Roll-Up Summary field on the Timecard Object that calculates the total hours from timecard entries for that timecard

  C. A Process Builder process that updates a field on the timecard when a timecard entry is created

  D. An Apex trigger that uses an Aggregate Query to calculate the hours for a given timecard and stores it in a custom field

  Correct Answer: B

• Question 448:

  A method is passed a list of generic sObjects as a parameter.

  What should the developer do to determine which object type (Account, Lead, or Contact, for example) to cast each sObject?

  A. Use the first three characters of the sObject ID to determine the sObject type.

  B. Use the getSObjectType method on each generic sObject to retrieve the sObject token.

  C. Use the getSObjectName method on the sObject class to get the sObject name.

  D. Use a try-catch construct to cast the sObject into one of the three sObject types.

  Correct Answer: B

• Question 449:

  Which three declarative fields are correctly mapped to variable types in Apex? (Choose three.)

  A. Number maps to Decimal.

  B. Number maps to Integer.

  C. TextArea maps to List of type String.

  D. Date/Time maps to Dateline.

  E. Checkbox maps to Boolean.

  Correct Answer: ADE

• Question 450:

  A developer wrote a unit test to confirm that a custom exception works properly in a custom controller, but the test failed due to an exception being thrown.

  Which step should the developer take to resolve the issue and properly test the exception?

  A. Use try/catch within the unit test to catch the exception.

  B. Use the finally bloc within the unit test to populate the exception.

  C. Use the database methods with all or none set to FALSE.

  D. Use Test.isRunningTest() within the custom controller.

  Correct Answer: A