Question 1

____ is often described as the has-a relationship.

Accepted Answer

A) Inheritance 
B) Aggregation 
C) Polymorphism 
D) Dependency 
A) Inheritance 
B) Aggregation 
C) Polymorphism 
D) Dependency

Question 2

After you have identified a set of classes needed for a program, you should now ____.

Accepted Answer

A) Define the behavior of each class. 
B) Look for nouns that describe the tasks. 
C) Begin writing the code for the classes. 
D) Establish the relationships between the classes. 
A) Define the behavior of each class. 
B) Look for nouns that describe the tasks. 
C) Begin writing the code for the classes. 
D) Establish the relationships between the classes.

Question 3

What is not a component of a CRC Card?

Accepted Answer

A) Collaborators 
B) Responsibilities 
C) Class 
D) UML Diagram 
A) Collaborators 
B) Responsibilities 
C) Class 
D) UML Diagram

Question 4

Which of the following code snippets denotes that the Purse class depends on the Wallet class?

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 5

Aggregation denotes that ____.

Accepted Answer

A) Objects of one class inherit from objects of its superclass. 
B) Objects of one class can be inherited by its subclasses. 
C) Objects of one class contain references to objects of its superclass. 
D) Objects of one class contain references to objects of another class. 
A) Objects of one class inherit from objects of its superclass. 
B) Objects of one class can be inherited by its subclasses. 
C) Objects of one class contain references to objects of its superclass. 
D) Objects of one class contain references to objects of another class.

Question 6

When using the CRC method, other classes that are needed to fulfill the responsibilities of a given class are called its ____.

Accepted Answer

A) Related classes 
B) Responsible classes 
C) Collaborators 
D) Concurrent classes 
A) Related classes 
B) Responsible classes 
C) Collaborators 
D) Concurrent classes

Question 7

Select a code segment to complete the SmartPhone class, so that it reflects an interface implementation relationship between SmartPhone and MP3Player.

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 8

During the implementation phase, which of the following statements is true?

Accepted Answer

A) Aggregated classes will yield subclasses. 
B) Aggregated classes will yield instance variables. 
C) Aggregated classes will yield class packages. 
D) Aggregated classes will yield interfaces. 
A) Aggregated classes will yield subclasses. 
B) Aggregated classes will yield instance variables. 
C) Aggregated classes will yield class packages. 
D) Aggregated classes will yield interfaces.

Question 9

Consider the following code snippet:   This code is best described as an example of ____.

Accepted Answer

A) Inheritance. 
B) Aggregation. 
C) Polymorphism. 
D) Association. 
A) Inheritance. 
B) Aggregation. 
C) Polymorphism. 
D) Association.

Question 10

____ is often described as the is-a relationship.

Accepted Answer

A) Inheritance 
B) Aggregation 
C) Polymorphism 
D) Dependency 
A) Inheritance 
B) Aggregation 
C) Polymorphism 
D) Dependency

Question 11

Before you begin designing a solution, you should ____.

Accepted Answer

A) Document the methods that will be needed. 
B) Gather and document all requirements for the program in plain English. 
C) Determine the classes that will be needed. 
D) Create the UML diagrams to represent the classes. 
A) Document the methods that will be needed. 
B) Gather and document all requirements for the program in plain English. 
C) Determine the classes that will be needed. 
D) Create the UML diagrams to represent the classes.

Question 12

A UML class diagram would be most useful in visually illustrating which of the following?

Accepted Answer

A) The cohesiveness of a class's interface. 
B) The amount of complexity of a class's interface. 
C) Dependencies between classes. 
D) Relationships between classes and their interfaces. 
A) The cohesiveness of a class's interface. 
B) The amount of complexity of a class's interface. 
C) Dependencies between classes. 
D) Relationships between classes and their interfaces.

Question 13

In a UML diagram, the relationship symbol shown below denotes ____.

Accepted Answer

A) Inheritance 
B) Aggregation 
C) Dependency 
D) Interface implementation 
A) Inheritance 
B) Aggregation 
C) Dependency 
D) Interface implementation

Question 14

Which statement correctly describes the class relationship shown in this diagram?

Accepted Answer

A) Quiz class depends on Question class 
B) Question class aggregates Quiz class 
C) Quiz class aggregates Question class. 
D) Question class inherits from Quiz class. 
A) Quiz class depends on Question class 
B) Question class aggregates Quiz class 
C) Quiz class aggregates Question class. 
D) Question class inherits from Quiz class.

Question 15

You are designing an application to support an automobile rental agency.Which of the following probably should NOT be represented as an object?

Accepted Answer

A) Automobile 
B) Customer 
C) Payment amount 
D) Rental contract 
A) Automobile 
B) Customer 
C) Payment amount 
D) Rental contract

Question 16

Which of the following code snippets denotes that the Pen class depends on the Ink class?

Accepted Answer

A)   
B)   
C)   
D)   
A)   
B)   
C)   
D)

Question 17

How does a UML diagram denote a multiplicity of one or more in an aggregation relationship?

Accepted Answer

A) * 
B) 1..* 
C) *..1 
D) 1..n 
A) * 
B) 1..* 
C) *..1 
D) 1..n

Question 18

In a UML diagram, an interface implementation is denoted by ____.

Accepted Answer

A) A dotted line with a closed arrow tip. 
B) A solid line with a closed arrow tip. 
C) A dotted line with an open arrow tip. 
D) A solid line with an open arrow tip. 
A) A dotted line with a closed arrow tip. 
B) A solid line with a closed arrow tip. 
C) A dotted line with an open arrow tip. 
D) A solid line with an open arrow tip.

Question 19

Which statement correctly describes the class relationship shown in this diagram?

Accepted Answer

A) Tire class aggregates Car class. 
B) Car class aggregates Tire class. 
C) Car class inherits from Tire class. 
D) Tire class inherits from Car class. 
A) Tire class aggregates Car class. 
B) Car class aggregates Tire class. 
C) Car class inherits from Tire class. 
D) Tire class inherits from Car class.

Question 20

Consider the following code snippet:   Which of the following statements is correct?

Accepted Answer

A) Purse aggregates Coin. 
B) Coin depends on Purse. 
C) The Coin class must be declared as an inner class within Purse. 
D) Coin inherits from Purse. 
A) Purse aggregates Coin. 
B) Coin depends on Purse. 
C) The Coin class must be declared as an inner class within Purse. 
D) Coin inherits from Purse.

Exam 12: Object-Oriented Design

____ is often described as the has-a relationship.

After you have identified a set of classes needed for a program, you should now ____.

What is not a component of a CRC Card?

Which of the following code snippets denotes that the Purse class depends on the Wallet class?

Aggregation denotes that ____.

When using the CRC method, other classes that are needed to fulfill the responsibilities of a given class are called its ____.

Select a code segment to complete the SmartPhone class, so that it reflects an interface implementation relationship between SmartPhone and MP3Player.

During the implementation phase, which of the following statements is true?

Consider the following code snippet: This code is best described as an example of ____.

____ is often described as the is-a relationship.

Before you begin designing a solution, you should ____.

A UML class diagram would be most useful in visually illustrating which of the following?

In a UML diagram, the relationship symbol shown below denotes ____.

Which statement correctly describes the class relationship shown in this diagram?

You are designing an application to support an automobile rental agency.Which of the following probably should NOT be represented as an object?

Which of the following code snippets denotes that the Pen class depends on the Ink class?

How does a UML diagram denote a multiplicity of one or more in an aggregation relationship?

In a UML diagram, an interface implementation is denoted by ____.

Which statement correctly describes the class relationship shown in this diagram?

Consider the following code snippet: Which of the following statements is correct?

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