CPRE Requirements Modeling & Use Cases 3

Question 1

Which of the following best describes a domain model in requirements engineering?

Accepted Answer

A conceptual model of the problem domain showing key concepts and their relationships

Answer

A model that describes the internal software architecture of the system

Answer

A model that specifies the deployment topology of the system

Answer

A model that lists all functional requirements in tabular form

Question 2

In structured requirements modeling using DFDs, what is the purpose of a 'leveling' or 'decomposition' technique?

Accepted Answer

To break a high-level process into progressively more detailed sub-processes

Answer

To rank requirements by priority

Answer

To identify redundant requirements for elimination

Answer

To trace requirements back to their source stakeholders

Question 3

An actor in a use case model that represents an automated external system (e.g., a payment gateway) is best described as:

Accepted Answer

A secondary actor, because it supports the system but does not initiate the use case goal

Answer

A primary actor, because it directly triggers the use case

Answer

An abstract actor, because it is not human

Answer

A generalized actor, because it can be replaced by any external system

Question 4

Which modeling notation is specifically designed to capture how different system components interact over time through message exchanges?

Accepted Answer

Sequence diagram

Answer

Class diagram

Answer

State machine diagram

Answer

Component diagram

Question 5

When a use case model becomes too complex, IREB recommends which strategy to manage complexity?

Accepted Answer

Factor out common behavior into included use cases and conditional behavior into extending use cases

Answer

Replace all use case diagrams with natural language only

Answer

Combine all related use cases into a single comprehensive use case

Answer

Remove secondary actors to simplify the diagram

Question 6

In requirements modeling, a 'guard condition' on a transition in a state machine diagram specifies:

Accepted Answer

A Boolean condition that must be true for the transition to fire

Answer

The action executed when entering a state

Answer

The event that triggers the transition

Answer

The exit action executed when leaving a state

Question 7

Which of the following is a key quality criterion for a use case model according to IREB CPRE principles?

Accepted Answer

Each use case must deliver an observable, measurable result of value to a primary actor

Answer

All use cases must involve at least three actors

Answer

Each use case must be implementable in a single software sprint

Answer

Use cases must not reference any data stores or databases