Question 1

For an XYCoord class that stores x and y private instance variables, how should the variables be named?

Accepted Answer

The answer of For an XYCoord class that stores x...

Question 2

A class diagram in UML is used to specify the static aspects of an object-oriented design.

Accepted Answer

A) True 
 B)False

Question 3

Give the definition of an abstract class named Currency that stores a currency amount (as an integer value). Include in the class an __init__ method and an abstract __str__ method. Define three subclasses of the Currency class named USCurrency (dollars), EuroCurrency (euros), and the ChineseCurrency (yuan). Implement the __str__ method of each so that the proper currency symbol is displayed. The Unicode string for displaying Euro and Chinese currency symbols are '\u20AC' and '\u5143, respectively.

Accepted Answer

The answer of Give the definition of an abstract class...

Question 4

Functions in Python meant to serve as methods of a particular class must have an added first parameter, by convention named ___________.

Accepted Answer

The answer of Functions in Python meant to serve as...

Question 5

Another name for a subclass is a _____________ class or _____________ class.

Accepted Answer

The answer of Another name for a subclass is a...

Question 6

_______________ in a UML class diagrams is used to indicate the number of objects that may be associated with an object of another type.

Accepted Answer

The answer of _______________ in a UML class diagrams is...

Question 7

Built-in function _______ can be used to determine the type (class name) of any value in Python.

Accepted Answer

The answer of Built-in function _______ can be used to...

Question 8

UML is a graphical programming language.

Accepted Answer

A) True 
 B)False

Question 9

Built-in function _______ can be used to get the class description of a built-in type in Python.

Accepted Answer

The answer of Built-in function _______ can be used to...

Question 10

Functions serving as methods of a given class must have an extra first parameter, which by convention is named self.

Accepted Answer

A) True 
 B)False

Question 11

in Python, any set of classes with a common set of methods, even if not subclasses of a common type, can be treated similarly. This kind of typing is called ___________________.

Accepted Answer

The answer of in Python, any set of classes with...

Question 12

The most common relationship between classes is a UML class diagram is association.

Accepted Answer

A) True 
 B)False

Question 13

The direction of method calls between two classes can be optionally specified in UML by the use of ______________.

Accepted Answer

The answer of The direction of method calls between two...

Question 14

Encapsulation provides a form of information hiding.

Accepted Answer

A) True 
 B)False

Question 15

Match the descriptions with their terms:
-describes an association between two classes

Accepted Answer

A)  association 
B)  navigation 
C)  multiplicity 
D)  composition 
E)  aggregation
F) role names

Question 16

Private members of a class in Python must begin with two ________________ characters.

Accepted Answer

The answer of Private members of a class in Python...

Question 17

Special Methods are defined with

Accepted Answer

A) two underscores before the method name 
B)  two underscores after the method name 
C)  two underscores before and after the method name 
D)  the key word special before the method definition

Question 18

Initialization methods like __init__ in Python are named ______________ in UML.

Accepted Answer

The answer of Initialization methods like __init__ in Python are...

Question 19

The + and - symbols in UML class diagrams are used to denote

Accepted Answer

A)  public and private access 
B)  instance variables and method members 
C)  built-in and user-defined classes 
D)  abstract and concrete methods

Question 20

Another name for a superclass is a _____________ class or _____________ class.

Accepted Answer

The answer of Another name for a superclass is a...

Exam 10: Object-Oriented Programming

For an XYCoord class that stores x and y private instance variables, how should the variables be named?

A class diagram in UML is used to specify the static aspects of an object-oriented design.

Functions in Python meant to serve as methods of a particular class must have an added first parameter, by convention named ___________.

Another name for a subclass is a _ class or _ class.

_______________ in a UML class diagrams is used to indicate the number of objects that may be associated with an object of another type.

Built-in function _______ can be used to determine the type (class name) of any value in Python.

UML is a graphical programming language.

Built-in function _______ can be used to get the class description of a built-in type in Python.

Functions serving as methods of a given class must have an extra first parameter, which by convention is named self.

in Python, any set of classes with a common set of methods, even if not subclasses of a common type, can be treated similarly. This kind of typing is called ___________________.

The most common relationship between classes is a UML class diagram is association.

The direction of method calls between two classes can be optionally specified in UML by the use of ______________.

Encapsulation provides a form of information hiding.

Match the descriptions with their terms: -describes an association between two classes

Private members of a class in Python must begin with two ________________ characters.

Special Methods are defined with

Initialization methods like init in Python are named ______________ in UML.

The + and - symbols in UML class diagrams are used to denote

Another name for a superclass is a _ class or _ class.