Understanding SSD Notations

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Questions and Answers

What does an object represented by a box shape with an underlined title in a UML SSD model?

An actor that interacts with the system
A system event generated by an actor
A system with inner workings that are immediately visible
A black box, representing the system as a whole (correct)

What do stick figures typically represent in a UML SSD?

Events generated by the system
Entities that interact with the system (correct)
Classes or objects in the system
The inner workings of the system

What is represented by a dashed line in a UML SSD?

An object in the system
An actor that interacts with the system
A system event generated by an actor
A lifeline, representing events in the system (correct)

What can a lifeline in a UML SSD begin with?

<p>A labeled rectangle shape or an actor symbol (B)</p> Signup and view all the answers

What is NOT true about an actor in a UML SSD?

<p>An actor is part of the system (D)</p> Signup and view all the answers

Study Notes

Notations in SSD

A box shape with an underlined title represents a class or object in UML, modeling the system as a black box (a system with internal workings that are not immediately visible).

Actors in SSD

Actors are entities that interact with the system, but are external to it.
Actors are represented by stick figures.

Events in SSD

Events are system events generated by actors in a sequence.
A dashed line, known as a lifeline, represents events in an SSD.
Lifelines may begin with a labeled rectangle shape or an actor symbol.

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Description

Learn about SSD notations in UML, including objects, actors, and events. This quiz covers the basics of SSDs, including modeling systems as black boxes and representing events with lifelines.