Salesforce DEX-450 Quiz 30 Topic 11 Questions 146-150

Question: 1

A Hierarchy Custom Setting stores a specific URL for each profile in Salesforce. Which statement can a developer use to retrieve the correct URL for the current user'sprofile and display this on a Visualforce Page?

A{!$Setup.Url_Settings__C.Instance[Profile.Id].URL__c}

B{!$Setup.Url_Settings__C.URL__c}

C{!$Setup.Url_Settings__C.[Profile.Id].URL__c}

D{!$Setup.Url_Settings__C.[$Profile.Id].URL__c}

Show Answer

Question: 2

A developer creates an Apex helper class to handle complex trigger logic. How can the helper class warn users when the trigger exceeds DML governor limits?

ABy using PageReference.setRedirect() to redirect the user to a custom Visualforce page before the number of DML statements is exceeded.

BBy using Messaging.sendEmail() to continue toe transaction and send an alert to the user after the number of DML statements is exceeded.

CBy using AmexMessage.Messages() to display an error message after the number of DML statements is exceeded.

DBy using Limits.getDMLRows() and then displaying an error message before the number of DML statements is exceeded.

Show Answer

Question: 3

How can a developer avoid exceeding governor limits when using Apex Triggers? (Choose 2)

ABy using a helper class that can be invoked from multiple triggers

BBy using Maps to hold data from query results

CBy using the Database class to handle DML transactions

DBy performing DML transactions on a list of sObjects.

Show Answer

Question: 4

Which statement should a developer avoid using inside procedural loops? (Choose 2)

ASystem.debug('Amount of CPU time (in ms) used so far: ' + Limits.getCpuTime() );

BList contacts = [SELECT Id, Salutation, FirstName, LastName, Email FROM Contact WHERE AccountId = :a.Id];

CIf(o.accountId == a.id)

DUpdate contactList;

Show Answer

Question: 5

What is a good practice for a developer to follow when writing a trigger? (Choose 2)

AUsing @future methods to perform DML operations.

BUsing the Map data structure to hold query results by ID.

CUsing the Set data structure to ensure distinct records.

DUsing synchronous callouts to call external systems.

Show Answer

Salesforce DEX-450 Quiz:30 Topic:11 Questions:146-150