CPSA Quality Attributes and Scenarios 4

Question 1

In iSAQB quality scenario structure, the 'artifact' refers to:

Accepted Answer

The specific part of the system (component, module, or whole system) that is stimulated

Answer

The artifact identifies which part of the system the scenario applies to, such as a specific service, database, or the entire system.

Question 2

A system that degrades gracefully under overload by shedding non-critical requests is exhibiting which quality attribute?

Accepted Answer

Fault tolerance (sub-characteristic of Reliability)

Answer

Fault tolerance means the system continues operating, possibly in a degraded mode, in the presence of faults or overload conditions.

Question 3

Which quality characteristic in ISO 25010 includes 'appropriateness recognizability', 'learnability', and 'user error protection'?

Accepted Answer

Usability

Answer

Usability in ISO 25010 encompasses sub-characteristics related to how effectively and satisfactorily users can interact with the system.

Question 4

Which statement about quality attribute trade-offs is TRUE?

Accepted Answer

High security measures can negatively impact performance and usability

Answer

Security controls such as encryption and authentication add overhead, which can increase latency and reduce system usability.

Question 5

A 'general scenario' for availability would look like:

Accepted Answer

An external actor causes a fault; the system continues operating in degraded or full mode within a specified time

Answer

General scenarios use abstract, non-system-specific language to describe the pattern, while concrete scenarios fill in the specifics.

CPSA Exam Practice Test