SWD392 Part II: Software Modeling

What is a use case?

• A case study involving users

• A sequence of interactions between the user and the system

• A sequence of interactions between the user and the objects in the system

• A sequence of user inputs to the system

What is an actor in a use case?

• An object inside the system

• A person who performs on stage

• An external entity that interacts with the system

• The customer to whom the system will be delivered

What is a primary actor?

 

• The actor who goes on stage first

• The actor that starts the use case

• An actor that participates in the use case

• An object inside the system

What is a secondary actor?

 

• The actor who goes on stage second

• The actor that starts the use case

• An actor that participates in the use case

• An object inside the system

What is an alternative sequence in a use case?

 

• A sequence that describes an error case

• A sequence that is different from the main sequence

• A sequence that describes interactions with a secondary actor

• A sequence that describes interactions with a primary actor

What can an inclusion use case be used for?

• To describe an inclusive use case

• To describe a lengthy interaction with an actor

• To describe functionality that is common to more than one use case

• To describe a use case that includes other use cases

What can an extension use case be used for?

• To describe a lengthy interaction with an actor

• To describe functionality that is common to more than one use case

• To describe the functionality of a use case that is extended by another use case(s)

• To describe a conditional part of a different use case that is only executed under certain circumstances

What can an activity diagram be used for in use case modeling?

• To depict the sequence of activities executed by all the use cases in the system

• To depict the sequence of external activities that the use case interacts with

• To depict the sequence of active objects in a use case

• To depict the activities in the main and alternative sequences of a use case

How can a nonfunctional requirement be described in a use case model?

• In a separate section of the use case description

• As a use case precondition

• As a use case postcondition

• In a separate document

What is a use case package?

• A package describing the actors in the system

• A package describing the use cases in the system

• A group of related use cases

• The package of objects that participate in the use case