Salesforce Certification DEX-450 Dumps | Updated Apr 19, 2022 - Dumpexams
Master 2022 Latest The Questions Salesforce Certification and Pass DEX-450 Real Exam!
Introduction to Salesforce DEX-450 Exam
This qualification concentrates on the programmer's validation of abilities, such as the programming of programs. Salesforce DEX-450 certification acknowledges that the applicant has the potential to conform his / her Salesforce applications to the heart of the Pinnacle programming language and the visual power diagram. The credential offers a better indicator of the competences which you have established to provide prospective employers. Professionals need to gain functional expertise in constructing and programming data objects (sObjectiles) to retrieve, modify and store data from these objects. Specify custom logic with Apex triggers and classes and use the built-in testing system to test this logic. This Guide covers all facets of the DEX-450 Test, the salary of the accredited specialist Salesforce DEX-450 and all the aspects of the Salesforce DEX-450 certification.
The Salesforce DEX-450 exam is a competency qualification test that acknowledges your capability growth. You need industry expertise to attempt the test. Professionals should execute the following duties following certification:
- Using a declarative GUI to build and change subjects
- Write Visualforce and code for user interface setup
- Using the combined Apex and Visual Powers evaluation system.
- Develop programmatic implementations that benefit from declarative personalizations
- Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.
- Describe how the trigger code functions in the Save Execution Order
NEW QUESTION 158
What is a capability of the <ltng:require> tag that is used for loading external Javascript libraries in Lightning Component? (Choose three.)
- A. Loading scripts in parallel.
- B. One-time loading for duplicate scripts.
- C. Loading files from Documents.
- D. Specifying loading order.
- E. Loading externally hosted scripts.
Answer: A,B,D
NEW QUESTION 159
What are two considerations for custom Apex Exception classes? Choose 2 answers.
- A. Constructor for custom Exceptions can only accept string values as arguments.
- B. Custom Exception classes must extend the base Exception class.
- C. Custom Exceptions cannot be extended by other Exception classes.
- D. Custom Exception class names must end with the word 'Exception'.
Answer: B,D
NEW QUESTION 160
What must the Controller for a Visualforce page utilize to override the Standard Opportunity view button?
- A. The Opportunity StandardController for pre -built functionality.
- B. A callback constructor to reference the StandardController.
- C. A constructor that initializes a private Opportunity variable.
- D. The StandardSetController to support related lists for pagination.
Answer: A
NEW QUESTION 161
What is the result of the following code block ?
Integer x = 1;Integer Y = 0;While(x < 10){Y++;}
- A. Y = 9
- B. An error occurs
- C. Y = 10
- D. X = 0
Answer: B
NEW QUESTION 162
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 additional apex logic within the controller to query for the name field
- B. Use SOQL syntax to find the related accounts name field
- C. Use an additional standard controller for accounts
- D. Use the {!contact.account.name} merge field syntax
Answer: D
NEW QUESTION 163
In the code below, which type does String inherit from? String s = 'Hello World';
- A. Object
- B. Prototype
- C. Class
- D. Object
Answer: A
NEW QUESTION 164
Which requirement needs to be implemented by using standard workflow instead of Process Builder? Choose 2 answers
- A. Submit a contract for approval.
- B. Send an outbound message without Apex code.
- C. Create activities at multiple intervals.
- D. Copy an account address to its contacts.
Answer: B,D
NEW QUESTION 165
What is an accurate constructor for a custom controller named "MyController"?
- A. public MyController (ApexPages.StandardController stdController) { account = (Account) stdController.getRecord(); }
- B. public MyController (List objects) { accounts = (List ) objects; }
- C. public MyController () { account = new Account () ; }
- D. public MyController (sObject obj) { account = (Account) obj; }
Answer: C
NEW QUESTION 166
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. Include the sharing related list on the custom object page layout.
- B. Create a Sharing Rule comparing the custom object owner to the account owner.
- C. Ensure that the relationship between the objects is Master-Detail.
- D. Create a validation rule on the custom object comparing the record owners on both records.
Answer: C
NEW QUESTION 167
Which set of roll-up types are available when creating a roll-up summary field?
- A. COUNT, SUM, MIN, MAX
- B. AVERAGE, SUM, MIN, MAX
- C. SUM, MIN, MAX
- D. AVRAGE, COUNT, SUM, MIN, MAX
Answer: A
NEW QUESTION 168
Which three data types can be returned from an SOQL statement?
- A. Boolean
- B. List of objects
- C. Single object
- D. Integer
- E. String
Answer: B,C,D
NEW QUESTION 169
What can a developer use to determine if the core Apex code exceeds any governor limits in a test class during bulk execution?
- A. @TestSetup.
- B. Limits, startTest, stopTest
- C. Test.getDmlStatements()
- D. @TestVisible
Answer: B
NEW QUESTION 170
A developer must modify the following code snippet to prevent the number of SOQL queries issued from exceeding the platform governor limit. public class without sharing OpportunityService( public static List<OpportunityLineItem> getOpportunityProducts(Set<Id> opportunityIds){ List<OpportunitylineItem> oppLineItems = new List<OpportunityLineItem>(); for(Id thisOppId : opportunityIds){ oppLineItems.addAll([Select Id FROM OpportunityLineItems WHERE OpportunityId = :thisOppId)]; } return oppLineItems; } } The above method might be called during a trigger execution via a Lightning component. Which technique should be implemented to avoid reaching the governor limit?
- A. Use the System.Limits.getQueries() method to ensure the number of queries is less than 100.
- B. Use the System.Limits.getlimitQueries() method to ensure the number of queries is less than 100.
- C. Refector the code above to perform the SOQL query only if the Set of opportunityIds contains less 100 Ids.
- D. Refactor the code above to perform only one SOQL query, filtering by the Set of opportunityIds.
Answer: A
NEW QUESTION 171
When using SalesforceDX, what does a developer need to enable to create and manage scratch orgs?
- A. Sandbox
- B. Environment Hub
- C. Dev Hub
- D. Production
Answer: C
NEW QUESTION 172
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?
- A. Create a Lead Workflow Rule Field Update.
- B. Create a before insert Lead trigger.
- C. Create an after insert Lead trigger.
- D. Create a Lead formula field.
Answer: A
NEW QUESTION 173
Universal Containers (UC) has an integration with its Accounting system that creates tens of thousands of Orders inside of Salesforce in a nightly batch. UC wants to add automaton that can attempt to match Leads and Contacts to these Orders using the Email Address field on the insert. UC is concerned about the performance of the automation with a large data volume. Which tool should UC use to automate this process?
- A. Workflow Rules
- B. Apex
- C. Process Builder with an Autolaunched Flow
- D. Process Builder
Answer: B
NEW QUESTION 174
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 "Account.getSobjectType()"
- B. Call "Account.SobjectType"
- C. Call "acct.SobjectType"
- D. Call "acct.getsObjectType()"
Answer: D
NEW QUESTION 175
What is the debug output of the following Apex code?
Decimal theValue;
System.debug (theValue);
- A. 0
- B. Undefined
- C. 0.0
- D. null
Answer: D
NEW QUESTION 176
A company wants a recruiting app that models candidates and interviews; displays the total number of interviews on each candidate record; and defines security on interview records that is independent from the security on candidate records. What would a developer do to accomplish this task? Choose 2 answers
- A. Create a roll -up summary field on the Candidate object that counts Interview records.
- B. Create a trigger on the Interview object that updates a field on the Candidate object.
- C. Create a lookup relationship between the Candidate and Interview objects.
- D. Create a master -detail relationship between the Candidate and Interview objects.
Answer: B,C
NEW QUESTION 177
A developer has javascript code that needs to be called by controller functions in multiple components by extending a new abstract component. Which resource in the abstract component bundle allows the developer to achieve this
- A. Superrender.js
- B. Rendered.js
- C. Helper.js
- D. Controller.js
Answer: C
NEW QUESTION 178
Which two condition cause workflow rules to fire? Choose 2 answers
- A. An Apex batch process that changes field values
- B. Converting leads to person account
- C. Updating record using bulk API
- D. Changing territory assignments of accounts and opportunities
Answer: A,C
NEW QUESTION 179
Which two statements are acceptable for a developer to use inside procedural loops?
- A. ContactList.remove(i);
- B. Delete contactList;
- C. Contact con = new Contact();
- D. Account a = [SELECT id, Name FROM account WHERE id = : con.AccountId LIMIT 1];
Answer: A,C
NEW QUESTION 180
What would a developer do to update a picklist field on related Opportunity records when a modification to the associated Account record is detected?
- A. Create a Visualforce page.
- B. Create a Lightning Component.
- C. Create a workflow rule with a field update.
- D. Create a process with Process Builder.
Answer: D
NEW QUESTION 181
Cloud Kicks Fitness, an ISV Salesforce partner, is developing a managed package application. One of the application modules allows the user to calculate body fat using the apex class, Bodyfat, and its method, calculateBodyfat(). The product owner wants to ensure this method is accessible by the consumer of the application when developing customizer outside the ISV's package namespace. Which approach should a developer take to ensure calculateBodyFat() is accessible outside the package namespace?
- A. Declare the class and method using the global access modifier.
- B. Declare the class as public and use the global access modifier on the method.
- C. Declare the class as public and use the public access modifier on the method.
- D. Declare the class and method using the public access modifier.
Answer: A
NEW QUESTION 182
What can used to delete components from production?
- A. An ant migration tool deployment with a destructivechanges XML file and an empty package .xml file
- B. A change set deployment with a destructivechanges XML file
- C. A change set deployment with the delete option checked
- D. An ant migration tool deployment with destructivechanges xml file and the components to delete in the package .xml file
Answer: A
NEW QUESTION 183
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Topics of Salesforce DEX-450 Exam
Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts. DEX-450 exam will include the following topics:
1. Objects and Fields
Describe the capabilities of objects on the Salesforce platform Create a custom object Create custom fields Create relationship fields
2. Work Effectively with Custom Objects and Fields
Create formula fields Create roll-up summary fields Describe the capabilities of record types
3. Programming with Apex
Describe key aspects of Apex that differentiate it from other languages, such as Java and C# Describe why Apex transactions and governor limits must be considered when writing Apex Execute simple Apex Use the sObject data type, the primitive data types, and basic control statements in Apex
4. Use SOQL to Query Your Org's Data
Write a basic query using Salesforce's query language, SOQL Process the result of a query in Apex Create a query dynamically at run-time Use SOQL to Query - Parent-Child Relationships Describe a relationship query Write a query that traverses a child-to-parent relationship Write a query that traverses a parent-to-child relationship
5. DML Essentials
List the differences between the ways you can invoke DML operations Write Apex to invoke DML operations and handle DML errors
6. Trigger Essentials
Describe what a trigger is used for Describe the syntax of a trigger definition Use trigger context variables
7. Apex Class Essentials
Describe how Apex classes are used Define an Apex class Determine what data an Apex class can access
8. The Save Order of Execution and Apex Transactions
Describe key points in the Order of Execution Describe how triggers fit into and can be impacted by the Order of Execution Describe the lifecycle of an Apex Transaction Describe the memory lifecycle for static variables
9. Testing Essentials
Describe Apex's testing framework Create test data Write and run an Apex test
10. Testing Strategies
Describe practices for writing code that is easy to maintain and extend Write triggers and classes that assume batches of data as input Write code that works efficiently with the database, both in querying and using DML
11. Strategies for Designing Efficient Apex Solutions
Determine your code coverage percentages Create tests using best practices
12. Trigger Design Strategies
List declarative mechanisms you can use to implement complex business logic, for what types of problems they are best used, and their limitations Describe ways in which you can use declarative functionality to improve your programmatic solutions
13. Creating Visualforce Pages
Create a Visualforce page Reference a standard controller Launch a Visualforce page using a custom button Display data from a record in a Visualforce page
14. Exploring the View and Controller Layers of Visualforce
Create a Visualforce page Display related data Invoke standard controller actions
15. Working with Custom Controllers and Controller Extensions
Create controller extensions Create a custom controller Work with properties Use PageReferences Invoke custom methods in Visualforce pages 14.Working with List Controllers and SOSL Queries
Use a standard list controller in a Visualforce page Create a SOSL query Create a custom list controller
16. Visualforce Development Considerations
Determine whether a declarative solution exists for your requirements Describe common governor limit issues and security concerns Describe Visualforce strategies Testing Visualforce Controllers Describe how a Visualforce controller interacts with the view Write tests for controller constructors Write tests for action methods, getters, setters, and properties
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