Salesforce CRT-450 Online Practice Questions and Exam Preparation

Salesforce CRT-450 Online Questions & Answers

• Question 501:

  A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what is defined for payments in the PaymentProcessorinterface.

  public interface PaymentProcessor {

  void pay(Decimal amount);}

  Which is the correct implementation to use the PaymentProcessorinterface class?

  A. public class CheckPaymentProcessor implements PaymentProcessor { publicvoid pay(Decimal amount);
  B. public class CheckPaymentProcessor implements PaymentProcessor { publicvoid pay(Decimal amount){}
  C. public class CheckPaymentProcessor extends PaymentProcessor { publicvoid pay(Decimal amount){}
  D. public class CheckPaymentProcessor extends PaymentProcessor { publicvoid pay(Decimal amount);
  B. public class CheckPaymentProcessor implements PaymentProcessor { publicvoid pay(Decimal amount){}

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  Explanation/Reference:

• Question 502:

  A company has a custom object named Warehouse. Each Warehouse record has a distinct record owner, and is related to a parent Account in Salesforce.Which kind of relationship would a developer use to relate the Account to the Warehouse?

  A. One -to -Many
  B. Lookup
  C. Master -Detail
  D. Parent -Child
  B. Lookup

• Question 503:

  A developer writes the following code:

  

  What is the result of the debug statement?

  A. 1, 100
  B. 1, 150
  C. 2, 150
  D. 2, 200
  C. 2, 150

• Question 504:

  A visualforce interface is created for Case Management that includes both standard and custom functionality defined in an Apex class called myControllerExtension. The visualforce page should include which attribute(s) to correctly implement controller functionality?

  A. StandardController = "case" and extensions =" myControllerExtension"
  B. Extensions=" myControllerExtension"
  C. Controller=" myControllerExtension"
  D. Controller = "case" and extensions =" myControllerExtension"
  A. StandardController = "case" and extensions =" myControllerExtension"

• Question 505:

  What can a Lightning Component contain in its resource bundle? Choose 2 answer

  A. Custom client side rendering behavior.
  B. Build scripts for minification
  C. Properties files with global settings
  D. CSS styles scoped to the component
  A. Custom client side rendering behavior.
  D. CSS styles scoped to the component

• Question 506:

  As a part of class implementation a developer must execute a SOQL query against a large data ser based on the contact object. The method implementation is as follows.

  Which two methods are best practice to implement heap size control for the above code? (Choose 2 Answers)

  A. Use the FOR UPDATE option on the SOQL query to lock down the records retrieved.
  B. Use visual keyword when declaring the retrieve variable.
  C. Use a SOQL FOR loop, to chunk the result set in batches of 200 records.
  D. Use WHERE clauses on the SOQL query to reduce the number of records retrieved.
  B. Use visual keyword when declaring the retrieve variable.
  C. Use a SOQL FOR loop, to chunk the result set in batches of 200 records.

• Question 507:

  Which tag should a developer include when styling from external CSS is required in a Visualforce page?

  A. Apex : includeStyle
  B. Apex : require
  C. Apex : includeScript
  D. Apex : stylesheet
  D. Apex : stylesheet

• Question 508:

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

• Question 509:

  A Visualforce page uses the Contact standard controller. How can a developer display the Name from the parent Account record on the page?

  A. Use the (!contact.Account.Name) merge field syntax.
  B. Use an additional standard controller for Accounts.
  C. Use SOQL syntax to find the related Accounts Name field.
  D. Use additional Apex logic within the controller to query for the Name field.
  A. Use the (!contact.Account.Name) merge field syntax.

• Question 510:

  A developer is implementing an Apex class for a financial system. Within the class, the variables `creditAmount' and `debitAmount' should not be able to change once a value is assigned. In which two ways can the developer declare the variables to ensure their value can only be assigned one time? (Choose two.)

  A. Use the static keyword and assign its value in a static initializer.
  B. Use the final keyword and assign its value when declaring the variable.
  C. Use the final keyword and assign its value in the class constructor.
  D. Use the static keyword and assign its value in the class constructor.
  B. Use the final keyword and assign its value when declaring the variable.
  C. Use the final keyword and assign its value in the class constructor.

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  Explanation/Reference: