Question 1

The generalization/specialization hierarchy can lead to implementation problems if not composed of relatively stable or __________ classes.

Accepted Answer

Constant

Question 2

Which of the following is NOT true concerning generalization/specialization hierarchies?
A) A class might inherit attributes and methods from multiple classes.
B) They show a hierarchy of classes and subclasses that lead from the general to the specific.
C) They show a hierarchy of classes representing a collection of parts.
D) A class mighty inherit attributes and methods from an abstract class.

Accepted Answer

Generalization/specialization hierarchies show a hierarchy of classes and subclasses leading from the general to the specific, but they do not necessarily represent a collection of parts.

Question 3

Which of the following is TRUE concerning generalization/specialization hierarchies?
A) They show a hierarchy of classes representing a collection of parts.
B) They show a hierarchy of classes and subclasses that lead from the general to the specific.
C) They might be defined as a "contains" relationship.
D) They might be defined as a "includes" relationship.

Accepted Answer

Generalization/specialization hierarchies show a hierarchy of classes and subclasses that lead from the general to the specific.

Question 4

Which of the following is NOT true concerning whole-part hierarchies?
A) They might be defined as a "includes" relationship.
B) They might be defined as a "contains" relationship.
C) They include particularly strong relationships.
D) They might be defined as a "is-a" relationship.

Accepted Answer

Whole-part hierarchies are characterized by "includes" or "contains" relationships, indicating strong connections between the whole and its parts. The "is-a" relationship, however, defines a different type of hierarchy known as a generalization-specialization hierarchy, not a whole-part hierarchy.

Question 5

The symbol for a whole-part relationship is a _______________?
A) diamond on the line connecting the two classes
B) hollow circle on the line connecting the two classes
C) filled circle on the line connecting the two classes
D) triangle on the line connecting the two classes

Accepted Answer

The symbol for a whole-part relationship in UML (Unified Modeling Language) diagrams is a diamond on the line connecting the two classes. This is used to represent composition or aggregation relationships, indicating that one class is a part of or is composed of the other.

Question 6

Defining a(n) __________ relationship in a class diagram can increase the clarity and precision of the model.

Accepted Answer

The answer of Defining a(n) __________ relationship in a class...

Question 7

The generalization/specialization hierarchy works best when an object in a special class will always remain a __________ of that class.

Accepted Answer

The answer of The generalization/specialization hierarchy works best when an...

Question 8

A(n) ___________ hierarchy shows object relationships between an object in one class and objects in other classes that make up its "parts".

Accepted Answer

The answer of A(n) ___________ hierarchy shows object relationships between...

Question 9

The terms aggregation and composition are used for __________ relationships in UML.

Accepted Answer

The answer of The terms aggregation and composition are used...

Question 10

The generalization/ specialization hierarchy shows a hierarchy of classes and subclasses that lead from the __________ to the __________.

Accepted Answer

The answer of The generalization/ specialization hierarchy shows a hierarchy...

Question 11

A(n) __________ hierarchy allows one class to inherit attributes and methods from another.

Accepted Answer

The answer of A(n) __________ hierarchy allows one class to...

Question 12

A(n) __________ class exists only to allow subclasses to inherit from it.

Accepted Answer

The answer of A(n) __________ class exists only to allow...

Question 13

Which of the following is NOT described by scenarios?
A) User's interaction with the system
B) Use cases
C) Events that occur in the system
D) class diagrams

Accepted Answer

Scenarios describe user interactions with the system, use cases, and events that occur in the system. They do not describe class diagrams, which are a visual representation of the classes, interfaces, and their relationships in a system.

Question 14

Use cases and scenarios can be used to clarify system requirements.

Accepted Answer

The answer of Use cases and scenarios can be used...

Question 15

Which of the following is TRUE concerning whole-part hierarchies?
A) They include particularly strong relationships.
B) They are organized into superclasses and subclasses.
C) They define an inheritance relationship.
D) They are defined by what they do not contain.

Accepted Answer

Whole-part hierarchies represent strong relationships where parts are essential to the composition of the whole, indicating a strong dependency and connection between the components.

Question 16

A whole-part hierarchy allows one class to inherit attributes and methods from another.

Accepted Answer

A whole-part hierarchy represents a relationship where one object is a part of another object, not inheritance of attributes and methods which is characteristic of a class hierarchy or inheritance hierarchy.

Question 17

A generalization hierarchy shows object relationships between an object in one class and objects in other classes that make up its "parts".

Accepted Answer

A generalization hierarchy shows the relationships between a more general class (superclass) and more specific classes (subclasses), not the part-whole relationships.

Question 18

A _______ on the line indicates a whole-part relationship.
A) triangle
B) square
C) circle
D) diamond

Accepted Answer

The diamond shape is commonly used to indicate a whole-part relationship, where the whole is represented on one end and the parts that make up the whole are represented on the other end.

Question 19

_________________ occurs when the objects in a class inherit attributes and services form multiple classes.

Accepted Answer

The answer of _________________ occurs when the objects in a...

Question 20

A possible solution to problems introduced in multiple inheritance would be to model the classes according to the ___________ they play.

Accepted Answer

The answer of A possible solution to problems introduced in...

Quiz 7: Understanding More Complex Requirements Models With Generalizationspecialization and Whole-Part Hierarchies

The generalization/specialization hierarchy can lead to implementation problems if not composed of relatively stable or __________ classes.

Which of the following is NOT true concerning generalization/specialization hierarchies?

Which of the following is TRUE concerning generalization/specialization hierarchies?

Which of the following is NOT true concerning whole-part hierarchies?

The symbol for a whole-part relationship is a _______________?