100% Reliable DEX-450 Exam Dumps Test Pdf Exam Material [Q17-Q40] – Unlimited Lifetime Access Free Exams PDF

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NO.17 How many levels of child records can be returned in a single SOQL query from one parent object?

NO.18 What are two features of Heroku Connect? Choose 2 answers

Displaying data from an external data store via External Objects.

Real Time Sync between Salesforce and Postgres

Bidirectional syncs, allowing data to be written into Salesforce

Near Real Time Sync between Heroku Postgres and Salesforce

NO.19 A developer is asked to set a picklist field to ‘Monitor’ on any new Leads owned by a subnet of Users.
How should the developer implement this request?

Create an after insert Lead trigger.

Create a before insert Lead trigger.

Create a Lead Workflow Rule Field Update.

Create a Lead formula field.

NO.20 Universal Containers stores Orders and Line Items in Salesforce. For security reason, financial representatives are allowed to see information on the Order such as order amount, but they are not allowed to see the Line items on the Order. Which type of relationship should be used?

Lookup

Direct Lookup

Indirect lookup

Master Detail

NO.21 Which two statements are true about Getter and Setter methods as they relate to Visualforce?

Setter methods always have to be declared global.

There is no guarantee for the order in which Getter methods are called.

A corresponding Setter method is required for each Getter method.

Getter methods pass values from a controller to a page.

NO.22 Which three statements are true regarding custom exceptions in Apex? (Choose three.)

A custom exception class must extend the system Exception class.

A custom exception class can implement one or many interfaces.

A custom exception class cannot contain member variables or methods.

A custom exception class name must end with “Exception”.

A custom exception class can extend other classes besides the Exception class.

NO.23 Consider the following code snippet:

Given the multi-tenant architecture of the Salesforce platform, what Is a best practice a developer should Implement and ensure successful execution of the method?

Avoid executing queries without a limit clause.

Avoid returning an empty List of records.

Avoid using variables as query filters.

Avoid performing queries inside for loops.

NO.24 An org tracks customer orders on an Order object and the items of an Order on the Line Item object. The Line Item object has a MasterDetail relationship to the order object. A developer has a requirement to calculate the order amount on an Order and the line amount on each Line item based on quantity and price.
What is the correct implementation?

Implement the line amount as a numeric formula field and the order amount as a roll-up summary field.

Write a single before trigger on the Line Item that calculates the item amount and updates the order amount on the Order.

Implement the Line amount as a currency field and the order amount as a SUM formula field.

Write a process on the Line item that calculates the item amount and order amount and updates the filed on the Line Item and the order.

NO.25 When a task is created for a contact, how can a developer prevent the task from being included on the activity timeline of the contact’s account record?

In activity settings,uncheck roll-up activities to a contact’s primary account

By default,tasks do not display on the account activity timeline

Use process builder to create a process to set the task account field to blank

Create a task trigger to set the account field to NULL

NO.26 What are three capabilities of the <ltng : require> tag when loading JavaScript resources in Aura components?
Choose 3 answers

Loading files from Documents

One-time loading for duplicate scripts

Specifying loading order

Loading scripts In parallel

Loading externally hosted scripts

NO.27 A developer created a trigger on the Account object and wants to test if the trigger is properly bulklfield. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code? Choose 2 answers A developer created a trigger on the Account object and wants to test if the trigger is properly bulklfield. The developer team decided that the trigger should be tested with 200 account records with unique names.
What two things should be done to create the test data within the unit test with the least amount of code?
Choose 2 answers

Use the @isTest(isParallel=true) annotation in the test class.

Use Test.loadData to populate data in your test methods.

Use the @isTest(seeAllData=true) annotation in the test class.

Create a static resource containing test data.

NO.28 A recursive transaction is limited by a DML statement creating records for these two objects:
1. Accounts
2. Contacts
The Account trigger hits a stack depth of 16.
Which statement is true regarding the outcome of the transaction?

The transaction fails only if the Contact trigger stack depth is greater or equal to 16.

The transaction succeeds as long as the Contact trigger stack depth is less than 16.

The transaction fails and all the changes are rolled back.

The transaction succeeds and all the changes are committed to the database.

NO.29 Which action can a developer take to reduce the execution time of the following code? List<account> allaccounts = [select id from account]; list<account> allcontacts = [select id, accountid from contact]; for (account a :allaccounts){ for (contact c:allcontacts){ if(c.accountid = a.id){ //do work } } }

Use a map <id,contact> for allaccounts

Add a group by clause to the contact SOQL

Put the account loop inside the contact loop

Create an apex helper class for the SOQL

NO.30 A company wants to create an employee rating program that allows employees to rate each other. An employee’s average rating must be displayed on the employee record. Employees must be able to create rating records, but are not allowed to create employee records. Which two actions should a developer take to accomplish this task? choose 2 answers

Create a master-detail relanstionship between the rating and employee object

Create a trigger on the rating object that updates a field on the employee object

Create a roll-up sumary field on the employee and use avg to calculate the average rating score

Create a lookup realntionship beteween the rating and employee object

NO.31 In which two org types can a developer create new Apex Classes? Choose 2 answers

Developer Edition

Sandbox

Enterprise Edition

Unlimited

NO.32 Which statement results in an Apex compiler error?

Map<Id,Leas> lmap = new Map<Id,Lead>([Select ID from Lead Limit 8]);

Date d1 = Date.Today(), d2 = Date.ValueOf(‘2018-01-01’);

Integer a=5, b=6, c, d = 7;

List<string> s = List<string>{‘a’,’b’,’c’);

NO.33 A developer creates a custom controller and a custom Visualforce page by using the code block below:
public class MyController {
public String myString {
get {
if (myString == null) { myString = ‘a’;
}
return myString;
} private set; } public string getMyString (){
return ‘getMyString’;
} public string getStringMethod () {
if (myString == null) {
myString = ‘b’;
} return myString;
}
} <apex:page controller = “MyController”> {!StringMethod}, {!myString}, {!myString} </apex:page> What can the user expect to see when accessing the custom page?

A, a, a

B, b, b

A, b, getMyString

B, a, getMyString

NO.34 Which two approaches optimize test maintenance and support future declarative configuration changes? Choose 2 answers.

Create a method that queries for valid records, then call this method within test methods.

Create a methods that loads valid Account records from a static resources, then call this method within test methods.

Create a method that performs a callout for valid records, then call this method within test methods.

Create a method that creates valid records,then call this method within test methods.

NO.35 A development team wants to use a deployment script to automatically deploy to a sandbox during their development cycles. Which tool should they use to deploy to the sandbox?

Change Sets

VSCode

Ant Migration Tool

Developer Console

NO.36 A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Whithin the class, the developer identifies the following method as a security threat: List<Contact> performSearch(String lastName){ return Database.query(‘Select Id, FirstName, LastName FROM Contact WHERE LastName Like %’+lastName+’%); } What are two ways the developer can update the method to prevent a SOQL injection attack? Choose 2 answers

Use variable binding and replace the dynamic query with a static SOQL. (Missed)

Use the escapeSingleQuote method to sanitize the parameter before its use. (Missed)

Use a regular expression expression on the parameter to remove special characters.

Use the @Readonly annotation and the with sharing keyword on the class.

NO.37 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.)

Use myObject.sObjectType.getDescribe().fieldSet() to return a set of fields.

Use mySObject.myObject.fields.getMap() to return a map of fields.

Use Schema.describeSObjects(new String[]{myObject})[0].fields.getMap() to return a map of fields.

Use getGlobalDescribe().get(myObject).getDescribe().fields.getMap() to return a map of fields.

NO.38 A developer must create an Apex class, contactcontroller, that a Lightning component can use to search for Contact records. User of the Lightning component should only be able to search Contact records to which they have access. Which two will restrict the records correctly?

public class ContactController

public with sharing class ContactController

public without sharing class ContactController

public inherited sharing class ContactController

NO.39 What is the accurate statement about with sharing keyword? choose 2 answers

Inner class do not inherit the sharing setting from the container class

Both inner and outer class can be declared as with sharing

Either inner class or outer classes can be declared as with sharing but not both

Inner class inherit the sharing setting from the container class

NO.40 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?

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

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

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

Use Test.isRunningTest() within the custom controller.