Deck 15: Creating Classes and Objects

Question 1

A(n) ____ encapsulates all of the attributes and behaviors of the object it instantiates.

A) argument
B) procedure
C) parameter
D) class

Answer 1

D

Question 2

The only type of method which can be overloaded is a constructor.

Answer 2

False

Question 3

In its simplest form, the Class statement can be used in place of the Structure statement.

Answer 3

True

Question 4

The ____ of a class are represented by methods, which can be Sub or Function procedures.

A) behaviors
B) attributes
C) objects
D) parameters

Question 5

Each object is an instance of the ____ from which it is created.

A) parameter
B) class
C) procedure
D) variable

Question 6

In OOP, the term ____ means to enclose in a class.

A) abstract
B) encapsulate
C) inherit
D) incorporate

Question 7

A(n) ____ can represent something found in real life, such as a wristwatch or a car.

A) object
B) property
C) method
D) argument

Question 8

The convention is to use ____ case for the names of the Public variables in a class.

A) Camel
B) Pascal
C) AllCaps
D) SmallCaps

Question 9

By convention, the names of the Private variables in a class start with a(n) ____.

A) slash ( / )
B) underscore ( _ )
C) pound sign ( # )
D) ampersand ( & )

Question 10

____ are the operations (actions) that the object is capable of performing.

A) Objects
B) Events
C) Methods
D) Arguments

Question 11

____ are the actions to which an object can respond.

A) Objects
B) Events
C) Methods
D) Arguments

Question 12

When a variable in a class is declared using the ____ keyword, it can be accessed by any application that contains an instance of the class.

A) Module
B) Private
C) Dim
D) Public

Question 13

The Get statement begins with the keyword Get and ends with the keywords Return Get .

Question 14

The Class statement ends with the ____ clause.

A) E nd Class
B) Public Class
C) Exit Class
D) Dim Class

Question 15

The Class statement begins with ____.

A) the keywords Start Class , followed by the name of the class
B) the name of the class, followed by the keywords Start Class
C) the keywords Public Class , followed by the name of the class
D) the name of the class, followed by the keywords Public Class

Question 16

To instantiate a class-level object variable, you use the ____ keyword.

A) Public
B) Dim
C) Private
D) Property

Question 17

You use the ____ keyword to instantiate a procedure-level object variable.

A) Public
B) Dim
C) Private
D) Property

Question 18

In Visual Basic, you can define your own classes and then create instances from those classes.

Question 19

The Private variables of a class are visible to applications that contain an instance of the class.

Question 20

The ____ of a class are most often represented by Private variables and Public properties.

A) objects
B) methods
C) behaviors
D) attributes

Question 21

For the class Student , how you would create the auto-implemented string property of Firstname ?

Question 22

How can you make the Private members of a class available to an application?

Question 23

Constructors that contain parameters are called ____________________ constructors.

Question 24

When an application needs to assign data to or retrieve data from a Private variable in a class, it must use a(n) ____ property to do so.

A) Private
B) Public
C) class
D) object

Question 25

A class contains all of the attributes and ____________________ of the object it instantiates.

Question 26

____ enable you to specify the property of a class in one line of code.

A) System properties
B) Auto-implemented properties
C) Restricted properties
D) Class-delivered properties

Question 27

What are the steps to add a class file to the current project?

Question 28

After you define a class, you can then use the class to instantiate one or more ____________________.

Question 29

You can write a(n) ____ as either a Function procedure or a Sub procedure.

A) attribute
B) method
C) parameter
D) Property procedure

Question 30

An application cannot directly refer to the ____________________ variables in a class.

Question 31

What is an advantage of object-oriented programming?

Question 32

A constructor that has no parameters is called the ____________________ constructor.

Question 33

Describe what the  Get block and Set block does.

Question 34

What are the rules for naming methods?

Question 35

What is a constructor? What is the purpose of a constructor?

Question 36

You should use ____ to name a property.

A) nouns and verbs
B) verbs
C) adverbs and adjectives
D) nouns and adjectives

Question 37

What is a method's signature?

Question 38

A constructor begins with the keywords ____.

A) Public Sub New
B) Public Constructor
C) Private Constructor
D) Private New

Question 39

Although you can define a class that contains only attributes represented by Public variables, it is rarely done. Describe the disadvantage of using Public variables in a class.

Question 40

The Set statement begins with the keyword Set and ends with the keywords ____.

A) End Set
B) Return Set
C) Complete Set
D) Exit Set

Question 42

What is meant by overloaded methods and when is overloading of methods useful?