Plat-Dev-201 Exam Guide
This Plat-Dev-201 exam focuses on practical knowledge and real-world application scenarios related to the subject area. It evaluates your ability to understand core concepts, apply best practices, and make informed decisions in realistic situations rather than relying solely on memorization.
This page provides a structured exam guide, including exam focus areas, skills measured, preparation recommendations, and practice questions with explanations to support effective learning.
Exam Overview
The Plat-Dev-201 exam typically emphasizes how concepts are used in professional environments, testing both theoretical understanding and practical problem-solving skills.
Skills Measured
- Understanding of core concepts and terminology
- Ability to apply knowledge to practical scenarios
- Analysis and evaluation of solution options
- Identification of best practices and common use cases
Preparation Tips
Successful candidates combine conceptual understanding with hands-on practice. Reviewing measured skills and working through scenario-based questions is strongly recommended.
Practice Questions for Plat-Dev-201 Exam
The following practice questions are designed to reinforce key Plat-Dev-201 exam concepts and reflect common scenario-based decision points tested in the certification.
Question#1
A developer is designing a new application on the Salesforce platform and wants to ensure it can support multiple tenants effectively.
Which design framework should the developer consider to ensure scalability and maintainability?
A. Waterfall Model
B. Flux (view, action, dispatcher, and store)
C. Model-View-Controller (MVC)
D. Agile Development
Explanation:
MVC: The Model-View-Controller design pattern is ideal for Salesforce development as it separates the business logic (model), user interface (view), and controller logic, ensuring scalability and maintainability.
Salesforce’s architecture inherently supports MVC, with sObjects as the model, Visualforce or Lightning components as the view, and Apex controllers as the controller.
Why not other options?
A: The Waterfall model is a development methodology, not a design framework.
B: Flux is a front-end application architecture and not relevant to Salesforce.
D: Agile is a development methodology, not a design framework.
Salesforce MVC Architecture
Question#2
Universal Containers (UC) uses out-of-the-box order management, that has a Master-Detail relationship between Order and Order Line Item.
UC stores the availability date on each Order Line Item and Orders are only shipped when all of the Order Line Items are available.
Which method should be used to calculate the estimated ship date for an Order?
A. Use a LATEST formula on each of the latest availability date fields.
B. Use a CEILING formula on each of the latest availability date fields.
C. Use a DAYS formula on each of the availability date fields and a COUNT Roll-Up Summary field on the Order.
D. Use a MAX Roll-Up Summary field on the latest availability date fields.
Explanation:
Roll-Up Summary Field:
Since the relationship between Order and Order Line Item is aMaster-Detail, a Roll-Up Summary field can be used on the Order object.
The MAX function in a Roll-Up Summary field calculates the latest date (the maximum value) among all the availability dates on the Order Line Items.
Why MAX Roll-Up Summary Field Works:
The latest availability date among the Order Line Items will determine when the entire Order can be shipped.
Why Not Other Options?
AandB: There is no such formula called "LATEST" or "CEILING" applicable to date fields.
C: A COUNT Roll-Up Summary is irrelevant for calculating dates.
Reference: Roll-Up Summary Fields: https: //developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/roll_up_summary_fields.htm
Question#3
Universal Containers (UC) uses out-of-the-box order management, that has a Master-Detail relationship between Order and Order Line Item.
UC stores the availability date on each Order Line Item and Orders are only shipped when all of the Order Line Items are available.
Which method should be used to calculate the estimated ship date for an Order?
A. Use 2 LATEST formula on each of the latest availability date fields.
B. Use a CEILING formula on each of the latest availability date fields.
C. Use @ DAYS formula on each of the availability date fields and a COUNT Roll-Up Summary field on the Order.
D. Use a MAX Roll-Up Summary field on the latest availability date fields.
Explanation:
Roll-Up Summary Field:
Since the relationship between Order and Order Line Item is aMaster-Detail, a Roll-Up Summary field can be used on the Order object.
The MAX function in a Roll-Up Summary field calculates the latest date (the maximum value) among all the availability dates on the Order Line Items.
Why MAX Roll-Up Summary Field Works:
The latest availability date among the Order Line Items will determine when the entire Order can be shipped.
Why Not Other Options?
A and B: There is no such formula called "LATEST" or "CEILING" applicable to date fields.
C: A COUNT Roll-Up Summary is irrelevant for calculating dates.
Reference: Roll-Up Summary Fields: https: //developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/roll_up_summary_fields.htm
Question#4
A developer must create a CreditCardPayment class that provides an implementation of an existing Payment class.
public virtual class Payment {
public virtual void makePayment (Decimal amount) {
// implementation
}
}
Which is the correct implementation?
A. public class CreditCardPayment extends Payment { public virtual void makePayment (Decimal amount) { /* implementation */ } }
B. public class CreditCardPayment implements Payment { public virtual void makePayment (Decimal amount) { /* implementation */ } }
C. public class CreditCardPayment implements Payment { public override void makePayment (Decimal amount) { /* implementation */ } }
D. public class CreditCardPayment extends Payment { public override void makePayment (Decimal amount) { /* implementation */ } }
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
D (Correct): Since Payment is avirtual class, it can beextended (not implemented like an interface), and its makePayment method is also virtual, which allows it to be overridden using the override keyword.
The use of override is required to redefine a virtual or abstract method from the parent class.
Reference: Apex Developer Guide C Inheritance and Polymorphism
This maps to"Developer Fundamentals"in the PD1 exam, specifically aroundobject-oriented programming principles.
Question#5
A developer created a child Lightning web component nested inside a parent Lightning web component. The parent component needs to pass a string value to the child component.
In which two ways can this be accomplished? Choose 2 answers
A. The parent component can invoke a public method in the child component.
B. The parent component can use a public property to pass the data to the child component,
C. The parent can use the Apex controller class to send data to the child component.
D. The parent component can use a custom event to pass the data to the child component.
Explanation:
Public Method (A): The parent component can call a public method defined in the child component to pass data directly.
Reference: LWC Communication: Public Methods
Public Property (B): The parent component can bind data to a public property in the child component using the attribute syntax.
Reference: LWC Communication: API Properties
Incorrect Options:
C: Apex controllers are not used for direct communication between parent and child components.
D: Custom events are used for communication from child to parent, not parent to child.
Disclaimer
This page is for educational and exam preparation reference only. It is not affiliated with Salesforce, Developers, or the official exam provider. Candidates should refer to official documentation and training for authoritative information.
