Question 1

Each class has a special method called a constructor that is sometimes invoked when an object is instantiated.

Accepted Answer

A) True 
 B)False  False

Question 2

Set property procedures are used to assign values to member variables.

Accepted Answer

A) True 
 B)False  True

Question 3

The principle of "data hiding" is the exact opposite of the concepts that serve as the basis for object-oriented programming.

Accepted Answer

A) True 
 B)False  False

Question 4

Two instances of the same class may exist in a single program.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is an accurate definition of the term class?

Accepted Answer

A)  A class is a specific instance of a user-defined type. 
B)  A class is an encapsulation of data and procedures that has properties and responds to methods. 
C)  A class is populated with objects that hold data, have properties, respond to methods, and raise events. 
D)  A class is a template from which objects are created. 
A)  A class is a specific instance of a user-defined type. 
B)  A class is an encapsulation of data and procedures that has properties and responds to methods. 
C)  A class is populated with objects that hold data, have properties, respond to methods, and raise events. 
D)  A class is a template from which objects are created.

Question 6

Statements of which of the following kind should be placed in the Declarations section of a class code block?

Accepted Answer

A)  Public Event UserDefinedEvent(par1 As dataType1, par2 As dataType2, ...) 
B)  RaiseEvent UserDefinedEvent(arg1, arg2, ...) 
C)  Dim WithEvents object1 As ClassName 
D)  Private Sub object1_UserDefinedEvent(par1, par2, ...) _ Handles object1.UserDefinedEvent 
A)  Public Event UserDefinedEvent(par1 As dataType1, par2 As dataType2, ...) 
B)  RaiseEvent UserDefinedEvent(arg1, arg2, ...) 
C)  Dim WithEvents object1 As ClassName 
D)  Private Sub object1_UserDefinedEvent(par1, par2, ...) _ Handles object1.UserDefinedEvent

Question 7

Methods can be either Sub or Function procedures.

Accepted Answer

A) True 
 B)False

Question 8

What is the purpose of the Get property procedure?

Accepted Answer

A)  retrieve the value of a property 
B)  assign values 
C)  access private methods 
D)  verify the data 
A)  retrieve the value of a property 
B)  assign values 
C)  access private methods 
D)  verify the data

Question 9

Property blocks of code, that are used to access (indirectly) member or instance variables, must always contain both Get and Set property procedures.

Accepted Answer

A) True 
 B)False

Question 10

In the following statement, the word Private is used to guarantee that the variable cannot be accessed directly from outside the object.

Accepted Answer

A) True 
 B)False

Question 11

Which one of the following statements does NOT apply to object-oriented programming?

Accepted Answer

A)  Object-oriented programming helps to prevent the complete rewriting of a program every time a minor change needs to be made. 
B)  Object-oriented programming makes use of the principle of "data hiding." 
C)  Object-oriented programming makes use of the encapsulation within an object of data and procedures that act on the data. 
D)  Object-oriented programming depends on the programmer having access to and understanding all of the code that contains the data and procedures that are encapsulated within an object. 
A)  Object-oriented programming helps to prevent the complete rewriting of a program every time a minor change needs to be made. 
B)  Object-oriented programming makes use of the principle of "data hiding." 
C)  Object-oriented programming makes use of the encapsulation within an object of data and procedures that act on the data. 
D)  Object-oriented programming depends on the programmer having access to and understanding all of the code that contains the data and procedures that are encapsulated within an object.

Question 12

If member variables are declared as Private, they cannot be accessed directly from outside an object.

Accepted Answer

A) True 
 B)False

Question 13

The statement for raising a user-defined event is located in the class block of code and the event is dealt with in the form's code.

Accepted Answer

A) True 
 B)False

Question 14

A line of code that contains arguments and instantiates an object passes the value of these arguments to the object's New procedure.

Accepted Answer

A) True 
 B)False

Question 15

An object is an encapsulation of data and procedures that act on that data.

Accepted Answer

A) True 
 B)False

Question 16

Get property procedures are used to retrieve values of member variables.

Accepted Answer

A) True 
 B)False

Question 17

The lines of code used to create an instance of a class cannot be used inside of a procedure.

Accepted Answer

A) True 
 B)False

Question 18

The feature that two classes can have methods with different names but that have the same purpose (and essentially the same implementation), is known as polymorphism.

Accepted Answer

A) True 
 B)False

Question 19

Which statement form below carries out a method?

Accepted Answer

A)  objectName.propertyName = value 
B)  varName = objectName.propertyName 
C)  objectName.methodName(arg1, ...) 
D)  RaiseEvent eventName 
A)  objectName.propertyName = value 
B)  varName = objectName.propertyName 
C)  objectName.methodName(arg1, ...) 
D)  RaiseEvent eventName

Question 20

The New event procedure is automatically invoked when an object is instantiated.

Accepted Answer

A) True 
 B)False

Each class has a special method called a constructor that is sometimes invoked when an object is instantiated.

Set property procedures are used to assign values to member variables.

The principle of "data hiding" is the exact opposite of the concepts that serve as the basis for object-oriented programming.

Two instances of the same class may exist in a single program.

Which of the following is an accurate definition of the term class?

Statements of which of the following kind should be placed in the Declarations section of a class code block?

Methods can be either Sub or Function procedures.

What is the purpose of the Get property procedure?

Property blocks of code, that are used to access (indirectly) member or instance variables, must always contain both Get and Set property procedures.

In the following statement, the word Private is used to guarantee that the variable cannot be accessed directly from outside the object.

Which one of the following statements does NOT apply to object-oriented programming?

If member variables are declared as Private, they cannot be accessed directly from outside an object.

The statement for raising a user-defined event is located in the class block of code and the event is dealt with in the form's code.

A line of code that contains arguments and instantiates an object passes the value of these arguments to the object's New procedure.

An object is an encapsulation of data and procedures that act on that data.

Get property procedures are used to retrieve values of member variables.

The lines of code used to create an instance of a class cannot be used inside of a procedure.

The feature that two classes can have methods with different names but that have the same purpose (and essentially the same implementation), is known as polymorphism.

Which statement form below carries out a method?

The New event procedure is automatically invoked when an object is instantiated.

An Introduction to Computers and Problem Solving

Visual Basic, Controls, and Events

Variables, Input, and Output

Decisions

General Procedures

Repetition

Arrays

Text Files

Additional Controls and Objects

Databases

Filters

Exam 11: Object-Oriented Programming

Each class has a special method called a constructor that is sometimes invoked when an object is instantiated.

Set property procedures are used to assign values to member variables.

The principle of "data hiding" is the exact opposite of the concepts that serve as the basis for object-oriented programming.

Two instances of the same class may exist in a single program.

Which of the following is an accurate definition of the term class?

Statements of which of the following kind should be placed in the Declarations section of a class code block?

Methods can be either Sub or Function procedures.

What is the purpose of the Get property procedure?

Property blocks of code, that are used to access (indirectly) member or instance variables, must always contain both Get and Set property procedures.

In the following statement, the word Private is used to guarantee that the variable cannot be accessed directly from outside the object.

Which one of the following statements does NOT apply to object-oriented programming?

If member variables are declared as Private, they cannot be accessed directly from outside an object.

The statement for raising a user-defined event is located in the class block of code and the event is dealt with in the form's code.

A line of code that contains arguments and instantiates an object passes the value of these arguments to the object's New procedure.

An object is an encapsulation of data and procedures that act on that data.

Get property procedures are used to retrieve values of member variables.

The lines of code used to create an instance of a class cannot be used inside of a procedure.

The feature that two classes can have methods with different names but that have the same purpose (and essentially the same implementation), is known as polymorphism.

Which statement form below carries out a method?

The New event procedure is automatically invoked when an object is instantiated.

An Introduction to Computers and Problem Solving

Visual Basic, Controls, and Events

Variables, Input, and Output

Decisions

General Procedures

Repetition

Arrays

Text Files

Additional Controls and Objects

Databases

Filters