CPSA-FL Exam Dumps : ISAQB Certified Professional for Software Architecture -Foundation Level

A) FalseB) TrueC) True

In a system with a multitude of class dependencies, the following measures can be considered:

A) The dependencies between classes are the responsibility of the developers. No measures are required within the architecture: This is false. While developers do manage day-to-day class dependencies, architectural measures are necessary to address systemic issues in a mature system1.

B) Loosening of direct dependencies between classes through the introduction of interfaces: This is true. Introducing interfaces can decouple classes and allow for more flexible and maintainable code1.

C) Loosening of direct dependencies between classes through the introduction of factories: This is also true. Factories can provide a way to create instances of classes without specifying the exact class, thus reducing dependencies1.

These measures align with the iSAQB® SOFTWARE ARCHITECTURE – FOUNDATION LEVEL guidelines, which suggest that managing dependencies is crucial for maintaining and extending systems effectively1.

For a building block, the characteristics visible only in the whitebox view are:

• Code structure of the building block (D)
• Algorithms used in the building block (E)
• Implementation details for the security requirements of the building blocks (G)

The blackbox view suffices for:

• Public interfaces of the building block (A)
• Test coverage based on unit tests for sub building blocks contained in the building block (B)
• Test coverage based on integration tests ©
• Security requirements of the building blocks (F)

In software architecture, the whitebox view reveals the internal workings of a building block, including its code structure, algorithms, and specific implementation details1. This view is essential when the internal structure and behavior of the component need to be understood or modified.

On the other hand, the blackbox view treats the building block as an opaque entity, focusing on its exposed interfaces and observable behaviors without revealing its internal structure2. This view is sufficient for understanding what the building block does from an external perspective, such as its public interfaces and how well it performs its functions as determined by testing.

Here’s a breakdown of the characteristics:

• Whitebox View:
• Blackbox View:

References:

• arc42 Documentation on Building Block View1.
• Stack Overflow discussion on the difference between black box and white box in component diagrams2.
• Flylib Section on Black-Box and White-Box Component Views3.

The correct statements about design patterns are:A. Design patterns are not invented but discovered. - Design patterns represent solutions to common design problems and are derived from repeated experiences and observations in software development rather than being invented.B. Design patterns should always be described alongside the problem they are supposed to solve. - A fundamental aspect of using design patterns is understanding the specific problem a pattern addresses, which helps in applying the pattern effectively in relevant scenarios.