Exam Code: PEGACPLSA25V1
Exam Name: Certified Pega Lead System Architect (CPLSA)
Price: $68.00 $58.88
Exam Questions: 379 Q&As
Last Updated: 2026-10-05
Prepare for the PEGACPLSA25V1 Pega Lead System Architecture Exam with focused practice in enterprise architecture, solution planning, production-ready implementation, deployment, and Constellation adoption.
This advanced Pega Platform '25 exam evaluates the architectural judgment required to design scalable, resilient, secure, and maintainable enterprise applications.
The Pega Lead System Architecture Exam measures your ability to make architecture decisions across infrastructure, application structure, data, integrations, security, background processing, release management, monitoring, and user experience. Questions are likely to reward the design that remains supportable at enterprise scale, not merely the option that works in a small implementation.
This is the first of two exams in the CPLSA certification process. Candidates must also complete the CPLSA Application Design and Build Exam. Pega recommends at least 36 months of real-world implementation experience after earning the Certified Pega Senior System Architect certification.
You should be able to lead architecture decisions, translate enterprise constraints into Pega designs, guide multiple delivery teams, evaluate performance and security tradeoffs, and plan releases that are observable, reversible, and supportable in production.
The live exam contains 60 questions. The product catalog records 380 practice questions, which is a larger study collection and not the number delivered during the exam. Because the catalog also carries a legacy version label, confirm that the selected package has been revised for PEGACPLSA25V1 and Pega Platform '25.
Design Pega as a clustered, distributed enterprise platform. Cover node roles, high availability, resiliency, failover, architectural governance, performance tradeoffs, Pega GenAI, service externalization, Kafka-based event processing, security controls, monitoring, and operational resilience.
Translate business needs into an application stack, ruleset and layer strategy, case hierarchy, specialization model, data design, API architecture, authentication and authorization approach, and monitoring plan. Expect close choices where reuse, coupling, reporting, scalability, and change cost must be balanced.
Choose reliable background-processing and queue-processor patterns, route assignments appropriately, implement web embeds and landing pages, and lead secure deployment and CI/CD practices. Production readiness includes rollback, auditability, observability, capacity, and post-release support—not only functional testing.
Understand the separation of workflow and presentation, the relationship among the case data model, field types, and Views, and when to use simple, partial, or complex Views. Review troubleshooting, Traditional UI coexistence, and incremental adoption strategies.
Do not confuse case specialization with duplicated case types, synchronous integration with resilient asynchronous processing, or an implementation shortcut with an architecture standard. First identify the quality attribute being protected—scalability, availability, security, reuse, or maintainability—then choose the Pega pattern that directly supports it.
Use week 1 for enterprise topology, nodes, resilience, security, external services, Kafka, GenAI, and monitoring. Use week 2 for application layers, case hierarchy, specialization, data, APIs, identity, and PDC. Use week 3 for queue processors, assignments, CI/CD, deployment readiness, Constellation, and timed architecture scenarios.
For each scenario, write down five items: the business requirement, the limiting constraint, the quality attribute being protected, the recommended Pega pattern, and the strongest rejected alternative. This makes it easier to eliminate answers that are technically possible but do not best support the architectural goal.
These sample questions are provided for study and demonstration purposes. They do not represent the complete practice bank or confidential Pega exam content.
Which two statements about Cosmos React are true? (Choose two.)
Correct answers: C and D
Explanation: Cosmos React is intended for new applications that can use its React-based architecture and client-side rendering model. That architecture can reduce server-side UI processing and improve perceived performance.
Common mistake: Assuming every capability available in Traditional UI is automatically available in Cosmos React.
Why the other options are wrong: Rule delegation and localization support should not be assumed to match the capabilities and implementation patterns of the Traditional UI architecture.
What is the primary reason for developing unit test cases and automated test suites in a CI/CD model?
Correct answer: C
Explanation: Automated tests provide repeatable quality gates that detect regressions before changes advance through the delivery pipeline.
Common mistake: Confusing faster deployment mechanics with the quality assurance provided by automated tests.
Why the other options are wrong: A overstates automation and ignores the continuing need for testing expertise. B describes deployment speed rather than the main testing purpose. D identifies a possible technical integration, not the business reason for automated testing.
What are two major differences between Pega Web Mashup and the Pega Digital Experience (DX) API? (Choose two.)
Correct answers: C and D
Explanation: Web Mashup embeds Pega Platform UI in an external page. The DX API exposes case and assignment information so developers can create a more customized front-end experience.
Common mistake: Treating both options as different names for the same embedded UI technique.
Why the other options are wrong: A reverses the presentation relationship. B overstates the purpose of the DX API: it supports custom experiences while Pega continues to manage application behavior and case logic.
An enterprise-layer data class contains common properties. One component application creates instances of the class, while another component requires additional properties. Which option follows data-modeling best practices?
Correct answer: A
Explanation: Extending the enterprise data class in the component's appropriate layer preserves common enterprise definitions while keeping specialized properties with the application that needs them. A concrete class is appropriate because instances are created.
Common mistake: Moving component-specific fields into the enterprise layer and weakening reuse boundaries.
Why the other options are wrong: B and C pollute the enterprise model with specialized requirements. D uses an abstract class even though the design requires instantiable data.
Which option is recommended when extending the data model supplied by a Pega industry framework?
Correct answer: C
Explanation: Minimal specialization preserves the framework's supported structure, reuse, and upgrade path while allowing necessary business extensions.
Common mistake: Treating a framework as a starting sample that should be replaced rather than a maintained product foundation.
Why the other options are wrong: A and B discard framework value and increase maintenance. D lets an integration platform dictate the application's internal domain model, creating unnecessary coupling.
Verify the exact code PEGACPLSA25V1, the Pega Platform '25 scope, the revision date, and coverage of all four current domains. Do not assume that older PEGAPCLSA8x material fully matches this exam.
The live exam contains 60 questions. The larger practice bank revisits architectural objectives through additional scenarios and is not an indication of the number shown during one exam attempt.
Yes. The five samples above demonstrate scenario analysis, the recommended answer, the most common mistake, and why the distractors do not best satisfy the architecture requirement.
Do not assume that practice material includes Pega Academy courses, a cloud practice environment, product licensing, instructor support, or an exam voucher unless the listing states this explicitly.
The architecture exam and the subsequent Application Design and Build assessment are separate certification requirements. Confirm exactly which exam codes and products are included before purchasing.
A downloaded PDF can generally be opened offline with a compatible reader. Check the selected package for included formats, printing rights, download limits, and access duration.
Review the product page for its latest revision date and update period. Confirm whether changes to Pega Platform '25 objectives or terminology are included with the purchase.
Read the refund terms before downloading or activating the content. Eligibility may depend on the request date, content usage, duplicate orders, or documented access problems.
Review infrastructure, solution design, deployment, operations, and Constellation adoption with 380 practice questions.
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