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Salesforce Platform Developer II Exam Preparation Strategy

March 6, 2026 by admin

Salesforce Plat-Dev-201 Exam Preparation Guide
The Salesforce Plat-Dev-201: Salesforce Certified Platform Developer II Exam is an advanced certification designed for developers who want to demonstrate expertise in building complex applications on the Salesforce Platform. This certification validates advanced programming skills, data modeling, Apex design patterns, integration techniques, and performance optimization.

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Topics Covered in Salesforce Plat-Dev-201 Exam
The Salesforce Platform Developer II exam focuses on advanced development concepts within the Salesforce ecosystem.

Key exam topics include:

Advanced Apex Programming
Apex design patterns
Asynchronous Apex (Batch, Queueable, Future methods)
Transaction control and error handling

Integration and APIs
REST API and SOAP API development
Callouts and external services
Integration architecture

Data Modeling and Management
Advanced data modeling strategies
Large data volume handling
Performance optimization techniques

User Interface Development
Lightning Web Components (LWC)
Aura components
Visualforce development

Testing and Debugging
Advanced Apex testing strategies
Test data management
Debug logs and monitoring

Security and Performance
Secure coding practices
Governor limits optimization
Scalability design techniques
 

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Sample Question and Answers


QUESTION 1
A company’s engineering department is conducting a month-long test on the scalability of an inhousedeveloped
software that requires a cluster of 100 or more servers. Which of the following models is the best to use?

A. PaaS
B. SaaS
C. BaaS
D. laaS

Answer: D

Explanation:
Infrastructure as a Service (IaaS)is the best model for the scenario described because it provides ondemand
access to compute, storage, and networking resources that are ideal for a scalable server
cluster. IaaS allows the engineering team to rent infrastructure resources without having to invest in
physical hardware, making it perfect for temporary or fluctuating workloads, such as scalability testing.
Key Characteristics of IaaS:
Full control over the operating systems and applications running on the servers.
Flexible resource allocation to support high scalability.
Ideal for custom software testing where specific server configurations may be needed.
Why not the other options?
PaaS (Platform as a Service):While PaaS is excellent for application development and deployment, it
abstracts the infrastructure layer, which would limit the engineering team’s control over the cluster’s configuration.
SaaS (Software as a Service):SaaS delivers fully managed applications, not infrastructure or testing
environments. Its irrelevant for this use case.
BaaS (Backend as a Service):BaaS is tailored to mobile or web application backend development,
providing APIs and pre-built services, not infrastructure for a server cluster.
Platform Developer Reference:
While this question is broader than Salesforce-specific concepts, understandingIaaS vs. PaaSis
relevant when working with Salesforce development. For example:
Salesforce operates as aPaaS(e.g., Force.com platform), allowing developers to build and deploy
applications without managing underlying servers.
Testing scalability and performance at an infrastructure level (as in the question) would fall
underIaaSconcepts, which Salesforce developers might encounter when integrating external services
or infrastructure like AWS, Azure, or Google Cloud.
This foundational knowledge complements your understanding of cloud services in the Salesforce ecosystem.

QUESTION 2
What are three characteristics of change set deployments?
Choose 3 answers Sending a change set between two orgs requires a deployment connection.

A. Change sets can deploy custom settings data.
B. Change sets can only be used between related organizations.
C. Deployment is done in a one-way, single transaction.
D. Sending a change set between two orgs requires a deployment connection.
E. Change sets can be used to transfer records.

Answer: B,C,D

Explanation:
Change sets can only be used between related organizations:
Change sets require a relationship between the source and target Salesforce orgs, such as a
production org and its sandboxes. You cannot use change sets between unrelated Salesforce orgs.
Reference:Salesforce Change Set Overview
Deployment is done in a one-way, single transaction:
When a change set is deployed, it is applied to the target org as a single transaction. If there are any
errors in the deployment, the entire transaction is rolled back.
Reference:Apex Development Guide
Sending a change set between two orgs requires a deployment connection:
Before sending or deploying a change set, a deployment connection must be established between
the source and target orgs. This connection is configured in the setup menu under “Deployment Connections.”
Reference:Trailhead: Deployment Connections
Incorrect Options:
A . Change sets can deploy custom settings data:
Change sets cannot deploy data, including custom settings data. They only move metadata.
E . Change sets can be used to transfer records:
Records (data) are not supported by change sets; they only facilitate metadata migration.

QUESTION 3
Universal Containers wants to ensure that all new leads created in the system have a valid email
address. They have already created a validation rule to enforce this requirement, but want to add an
additional layer of validation using automation.
What would be the best solution for this requirement?

A. Submit a REST API Callout with a JSON payload and validate the fields on a third party system
B. Use a before-save Apex trigger on the Lead object to validate the email address and display an error message if it is invalid
C. Use a custom Lightning Web component to make a callout to validate the fields on a third party system.
D. Use an Approval Process to enforce the completion of a valid email address using an outbound message action.

Answer: B

Explanation:
Before-save Apex Trigger:
This is the best solution because abefore-save triggerruns before the record is saved to the database,
providing an opportunity to validate or modify the data.
In this case, the Apex trigger can validate the email address using a regular expression or a thirdparty
API call to ensure the email address is valid. If the email is invalid, an error message can be
displayed using addError().
Why not the other options?
A . Submit a REST API Callout with a JSON payload:
REST callouts are more complex and generally not recommended for simple validation tasks like
email format validation. Additionally, callouts cannot be performed directly in a before-save trigger.
C . Use a custom Lightning Web Component (LWC):
LWCs are primarily for UI interactions and should not be used to enforce data validations that are server-side requirements.
D . Use an Approval Process:
Approval Processes are for managing the approval flow of records, not for real-time validations. They cannot enforce email validation directly.
Reference:
Apex Triggers Documentation
Trigger Context Variables

QUESTION 4
Which statement should be used to allow some of the records in a list of records to be inserted if others fail to be inserted?

A. Database. insert (records, true)
B. insert records
C. insert (records, false)
D. Database. insert (records, false)

Answer: D

Explanation:
Database.insert(records, false):
The Database.insert() method with the allOrNone parameter set to false allows for partial success.
If some records in the list fail due to validation rules, triggers, or other errors, the method will still
attempt to insert the remaining valid records.
The false parameter ensures that records that fail will not roll back the transaction for the others.
Why not the other options?
A . Database.insert(records, true):
The true parameter makes the operation transactional (all or none). If any record fails, all records will roll back.
B . insert records:
The insert DML statement behaves like Database.insert(records, true) by default and rolls back all
records if any error occurs.
C . insert(records, false):
This syntax is invalid in Apex.
Reference:
Apex DML Operations Documentation
Database Methods

QUESTION 5
A developer identifies the following triggers on the Expense _c object:
The triggers process before delete, before insert, and before update events respectively.
Which two techniques should the developer implement to ensure trigger best practices are followed?
Choose 2 answers

A. Unity all three triggers In a single trigger on the Expense__c object that Includes all events.
B. Unify the before insert and before update triggers and use Flow for the delete action.
C. Create helper classes to execute the appropriate logic when a record is saved.
D. Maintain all three triggers on the Expense __c object, but move the Apex logic out of the trigger definition.

Answer: A,C

Explanation:
A . Unify all three triggers in a single trigger on the Expense__c object that includes all events:
Salesforce best practices recommend having only one trigger per object to avoid redundancy and conflicts.
By combining all the events (before delete, before insert, and before update) into a single trigger, the
developer can manage the logic in an organized and maintainable manner.
This also simplifies debugging and ensures that the trigger logic executes in a predictable order.
C . Create helper classes to execute the appropriate logic when a record is saved:
Using helper classes allows for a clean separation of concerns. The trigger becomes a dispatcher that
delegates logic to dedicated classes.
For example, you can create methods like applyDefaultsToExpense(), validateExpenseUpdate(), and
deleteExpense() in a helper class and invoke them from the trigger.
This improves reusability, readability, and testability of the code.