Chapter Exercises

Question 1

How is an actor depicted on a use case diagram?

Answer 1

A stick figure

Question 2

How is a use case depicted on a use case diagram?

Answer 2

An oval

Question 3

How is a class depicted on a class diagram?

Answer 3

A box with one, two or three compartments

Question 4

How is an association depicted on a class diagram?

Answer 4

A solid line joining two class boxes

Question 5

How is public visibility depicted for a class element on a class diagram?

Answer 5

+ sign

Question 6

What are the two kinds of UML interaction diagrams?

Answer 6

Communication diagram sequence diagrams

Question 7

What does an interaction diagram depict?

Answer 7

Objects and messages

Question 8

What does a statechart diagram depict?

Answer 8

states and events

Question 9

What is a UML package?

Answer 9

A grouping of model elements

Question 10

What does a deployment diagram depict?

Answer 10

The physical configuration of the system in terms of physical connections between the nodes

Question 11

What is a use case?

Answer 11

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

Question 12

What is an actor?

Answer 12

An external entity that interacts with the system

Question 13

What is the primary actor?

Answer 13

The actor that initiates the use case

Question 14

What is a secondary actor?

Answer 14

An actor that participates in the use case

Question 15

What is an alternative sequence in a use case?

Answer 15

A sequence that is different than the main sequence

Question 16

What can an inclusion use case be used for?

Answer 16

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

Question 17

What can an extension use case be used for?

Answer 17

To describe functionality of a use case that is extended by another use case

Question 18

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

Answer 18

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

Question 19

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

Answer 19

In a separate section of the use case description

Question 20

What is a use case package?

Answer 20

A group of related use cases

Question 21

What is a boundary object?

Answer 21

An object that communicates with an external object

Question 22

What is a control object?

Answer 22

An object that controls other objects

Question 23

What is a state-dependent control object?

Answer 23

An object that executes a state machine

Question 24

What is a coordinator object?

Answer 24

A decision making object

Question 25

How would you determine a boundary class from the context diagram?

Answer 25

By determining the software classes that communicate with the external classes

Question 26

What is the timer object?

Answer 26

An object that is awakened by an external timer

Question 27

What do class structuring criteria help with?

Answer 27

Structuring an application into classes

Question 28

What is the classification process for application classes analogous to?

Answer 28

Categorizing books in a library

Question 29

What is the purpose of a stereotype in class structuring>

Answer 29

To label a class according to its class structuring criterion

Question 30

What is a business logic object?

Answer 30

An object that defines business specific application logic.

Question 31

What does an interaction diagram depict?

Answer 31

Software objects and the sequence of their interactions

Question 32

How is an actor depicted on an interaction diagram?

Answer 32

An instance of an actor can provide input to or receive output from a boundary object

Question 33

What does a sequence diagram depict?

Answer 33

Software objects and the sequence of their interactions

Question 34

What does a communication diagram depict?

Answer 34

Software objects and the sequence of their interactions

Question 35

What is the instance form of an interaction diagram?

Answer 35

Depicts one possible sequence of interactions among object instances

Question 36

What is the generic form of an interaction diagram?

Answer 36

Depicts all possible interactions among objects

Question 37

During dynamic interaction modeling use cases are realized as follows:

Answer 37

Determine objects that participate in each use case and the sequence of interactions among them

Question 38

Which of the following interactions could happen on an interaction diagram?

Answer 38

An external user sends a message to a user interaction object

Question 39

Which of the following interactions is NOT likely to happen on an interaction diagram

Answer 39

An input object sends a message to a printer object

Question 40

What kind of object would be the first object to receive an input from an external object?

Answer 40

A boundary object