CPSA Designing Building Blocks 5

Question 1

Which iSAQB arc42 view is PRIMARILY used to document building blocks and their static relationships?

Accepted Answer

Building block view

Answer

The arc42 building block view documents the system's static decomposition into building blocks and their inter-relationships.

Question 2

When applying the Dependency Inversion Principle to building blocks, high-level modules should:

Accepted Answer

Depend on abstractions rather than concrete low-level implementations

Answer

DIP requires that high-level modules depend on abstractions (interfaces), with low-level modules implementing those abstractions, inverting the traditional dependency direction.

Question 3

A team notices that every change to the 'Payment' building block also requires changes to 'Reporting' and 'Audit'. This MOST likely indicates:

Accepted Answer

Inappropriate coupling or shared responsibility across blocks

Answer

When unrelated blocks must change in lockstep, it signals excessive coupling or incorrectly distributed responsibilities.

Question 4

Which pattern allows a building block to adapt an incompatible interface to one expected by its client?

Accepted Answer

Adapter

Answer

The Adapter pattern wraps an incompatible interface and exposes the interface expected by the client building block.

Question 5

In building block design, 'cohesion' and 'coupling' are considered opposing forces because:

Accepted Answer

Increasing a block's internal cohesion tends to reduce its external coupling

Answer

Focusing a block's responsibilities internally (high cohesion) naturally limits what it needs from other blocks, reducing external coupling.

CPSA Exam Practice Test

CPSA Exam Practice Test

CPSA Designing Building Blocks 5