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Exam 6: Object Modeling

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Question 21

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A _____ is a visual summary of several related use cases within a system or subsystem.

A) use case description
B) use case diagram
C) use case schema
D) use case matrix

E) A) and D)
F) None of the above

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Question 22

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The line from the actor to the use case is called a(n) _____.

A) association
B) aggregation
C) lifeline
D) observation

E) A) and B)
F) A) and C)

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Question 23

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Inheritance enables an object,called a _____,to derive one or more of its attributes from a parent.

A bank account object can have a specific attribute called a(n) _____ that can be active,inactive,closed,or frozen.

When the outcome of one use case is incorporated by another use case,we say that the second case uses the first case.

An object has certain _____,which are characteristics that describe the object,such as the make,model,and color of a car.

For a use case diagram,the _____ shows what is included in the system and what is not included in the system.

A red Mustang is a(n) _____ of the CAR class.

The Unified Modeling Language (UML) represents an object as a _____ with the object name at the top,followed by the object's attributes and methods.

All objects within a(n) _____ share common attributes and methods.

_____ allows objects to be used as modular components anywhere in a system.

A(n) _____ represents a person,a place,an event,or a transaction that is significant to the information system.

The concept that a message gives different meanings to different objects is called _____.

A _____ is a command that tells an object to perform a certain method.

Classes that send or receive messages are shown at the bottom of the sequence diagram.

Object-oriented (O-O)analysis describes an information system by identifying things called objects.

Use cases cannot interact with other use cases.

A car performs a(n) _____ called OPERATE WIPERS when it is sent a message with the wiper control.

Attributes are similar to adjectives that describe the characteristics of an object.

A _____ shows how an object changes from one state to another,depending on events that affect the object.