DEX-450 Test Duration, Exam DEX-450 Passing Score

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In order to prepare for the DEX-450 certification exam, candidates should have a solid understanding of object-oriented programming concepts and be experienced in the Salesforce platform. Developers should also have a strong grasp of Apex and Visualforce development within Lightning Experience, as well as an understanding of best practices for designing and implementing custom solutions. DEX-450 Exam consists of 60 multiple-choice questions and has a time limit of 105 minutes. Passing the DEX-450 certification exam is a great way to demonstrate your expertise in Salesforce development and increase your marketability as a developer.

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Exam DEX-450 Passing Score & DEX-450 Excellect Pass Rate

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What is the duration, language, and format of Salesforce DEX-450 Exam

This exam consists of 85 questions
Certification Validity period : 3 years.
The type of questions is Multiple Choice and situation-based questions.

The validity of the Salesforce DEX-450 Certification is three years.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Sample Questions (Q50-Q55):

NEW QUESTION # 50
What is the value of the Trigger.old context variable in a before insert trigger?

A. list of newly created sObjects without IDs
B. null
C. Undefined
D. An empty list of sObjects

Answer: B

Explanation:
In a before insert trigger:
Trigger.old is null.
There is no existing record in the database to reference.
Why Not Other Options:
Option A: Describes Trigger.new.
Option B: The variable is defined but has a null value.
Option D: Trigger.old is not an empty list; it is null.
Reference:
Trigger Context Variables:
"In insert triggers, Trigger.old is null because the records are new."
- Apex Developer Guide: Trigger Context Variables

NEW QUESTION # 51
A Salesforce administrator used Flow Builder to create a flow named "accountOnboarding". The flow must be used inside an Aura component.
Which tag should a developer use to display the flow in the component?

A. lightning:flow
B. aura-flow
C. aura:flow
D. lightning-flow

Answer: A

Explanation:
To embed a Flow into an Aura component, you use the lightning:flow component.
Option A: lightning
Correct Answer.
The lightning:flow component allows you to embed a Flow in an Aura component.
Example Usage:
<aura:component>
<lightning:flow aura:id="flowData" />
</aura:component>
Reference:
Aura Component
Options Not Applicable:
Option B: aura-flow
Invalid Component.
Option C: aura
Invalid Component.
Option D: lightning-flow
Invalid Component Name in Aura.
Conclusion:
To display the Flow in an Aura component, the developer should use the lightning:flow tag, which is Option A.

NEW QUESTION # 52
Universal Containers decides to use exclusively declarative development to build out a new Salesforce application.
Which three options should be used to build out the database layer for the application?
Choose 3 answers

A. Roll-up summaries
B. Triggers
C. Custom objects and fields
D. Flows
E. Relationships

Answer: A,C,E

Explanation:
When building the database layer of a Salesforce application using exclusively declarative development, the following options are relevant:
Option A: Roll-up summaries
Valid Declarative Tool.
Roll-up summary fields allow calculations (SUM, COUNT, MIN, MAX) on child records in a master-detail relationship.
They are created declaratively.
Custom objects and fields form the core of the database schema.
They are created using the Setup menu without code.
Relationships (lookup, master-detail, and many-to-many via junction objects) are established declaratively.
They define how objects relate to each other.
Flows are used for process automation and logic.
They are part of the application logic layer, not the database layer.
Option E: Triggers
Requires Code (Not Declarative).
Triggers are written in Apex code.
They are not part of declarative development.
Conclusion:
To build the database layer declaratively, the developer should use Roll-up summaries (A), Custom objects and fields (C), and Relationships (D).
Reference:
Roll-Up Summary Fields
Option C: Custom objects and fields
Valid Declarative Tool.
Creating Custom Objects and Fields
Option D: Relationships
Valid Declarative Tool.
Object Relationships Overview
Incorrect Options:
Option B: Flows
Not Part of the Database Layer.

NEW QUESTION # 53
A developer declared a class as follow.
public class wysiwyg { // Properties and methods including DML }
Which invocation of a class method will obey the organization-wide defaults and sharing settings for the running user in the Salesforce Organization?

A. A developer using the Developer Console that invokes a method in this class from the execute anonymous window
B. A user on an external system that has an API call into Salesforce that invokes a method in this class
C. An Apex Trigger that invokes a helper method in this class
D. A Visualforce page with an Apex controller that invokes a method in this class

Answer: A

NEW QUESTION # 54
A developer needs to implement a custom SOAP Web Service that is used by an external Web Application. The developer chooses to include helper methods that are not used by the Web Application in the implementation of the Web Service Class.
Which code segment shows the correct declaration of the class and methods?

Answer: A

NEW QUESTION # 55
......

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DEX-450 TEST DURATION, EXAM DEX-450 PASSING SCORE

DEX-450 Test Duration, Exam DEX-450 Passing Score