CPSA Architectural Patterns and Styles 5

Question 1

A system must process large volumes of financial transactions in strict sequential order. Which architectural style is most appropriate?

Accepted Answer

Pipe-and-Filter with sequential filters

Answer

Pipe-and-Filter enforces strict sequential processing by chaining filters, ensuring each transaction passes through every processing stage in order.

Question 2

Which architectural pattern is best suited for systems that need to support multiple client interfaces (e.g., mobile, web, third-party) each with different data requirements?

Accepted Answer

Backend for Frontend (BFF) pattern

Answer

BFF provides a dedicated API layer per client type, allowing each interface to receive data shaped to its specific needs without compromising other clients.

Question 3

In the context of the CPSA framework, which architectural pattern directly supports the 'Open/Closed Principle' by allowing new behavior to be added without modifying the core?

Accepted Answer

Plugin / Microkernel Architecture

Answer

Microkernel (Plugin) architecture keeps a minimal stable core and allows new features to be added as plugins, so the core remains closed for modification but open for extension.

Question 4

When evaluating architectural patterns, which ISO 25010 quality attribute does CQRS most directly improve for the read side?

Accepted Answer

Performance efficiency (scalability of reads)

Answer

CQRS allows the read model to be independently scaled and optimized (e.g., with denormalized read stores) without affecting the write model, directly improving read performance.

Question 5

A team adopts a 'Modular Monolith' instead of microservices. What is the primary architectural benefit of this choice?

Accepted Answer

Strong module boundaries with simpler deployment and operations than distributed services

Answer

A modular monolith enforces logical separation through well-defined module interfaces while avoiding the operational overhead of deploying, networking, and monitoring separate services.

CPSA Exam Practice Test

CPSA Exam Practice Test

CPSA Architectural Patterns and Styles 5