System Modelling Quiz

Which diagram perspective represents the interactions between a system and its environment?

• Class diagram

• Use case diagram

• Activity diagram

• Sequence diagram

What do actors in use case diagram represent?

• Time

• All of the above

• External systems

• Physical person

What is the standard language for specifying, modeling and visualizing the software systems?

• Java

• Python

• C++

• Unified Modelling Language (UML)

System modelling is useful in software development. Comment.

• It helps in communication and exploring potential designs

• It is only useful for documenting existing systems

• It is only useful for generating system implementation

• It is not useful at all

What is the difference between context and activity models?

• There is no difference between context and activity models

• Context models show the flow of activities in a process, while activity models show the environment of the system

• Context models are used for documenting existing systems, while activity models are used for generating system implementation

• Context models show the environment of the system, while activity models show the flow of functionallity in a use case

What is an abstract use case?

• A use case that includes other use cases

• A use case that is not started directly by an actor

• A use case that extends other use cases

• A use case that represents a main functionality

Which of the following is not a valid use case name?

• Select seat

• Enter user name

• Choose category

• Course addition

What does the association relationship in use case diagrams represent?

• The relationship between use case and an actor only

• The relationship between two use cases

• The relationship between use case and an external system

• The relationship between actors

What do UML activity diagrams define?

• Where the workflow starts and ends

• All of the above

• What activities occur during the workflow

• What order the activities occur

When is workflow analysis used?

• To define the flow of activities in a process

• To model the processing of data

• To understand the flow of events through a use case

• To understand how a work process is completed when several people are involved