Question 1

Whenever inheritance is used,the subclass must fit into a(n)____ relationship with the base class.

Accepted Answer

A)  equivalence 
B)  "has-a" 
C)  helper 
D)  "is-a"

Question 2

In a three-tier architecture,the classes in the ____ tier generally use data entered by users and data obtained from storage.

Accepted Answer

A)  processing 
B)  persistence 
C)  presentation 
D)  business

Question 3

Validation of user input data should occur in the business tier of a three-tier architecture.

Accepted Answer

A) True 
 B)False

Question 4

The ____________________ property identifies if all digits have been entered into the mask.

Accepted Answer

The answer of The ____________________ property identifies if all digits...

Question 5

The code in a(n)____ procedure executes before any other code in an object.

Accepted Answer

A)  beginner 
B)  builder 
C)  constructor 
D)  instantiation

Question 6

Both a base class and its subclass must have ____.

Accepted Answer

A)  constructors 
B)  objects 
C)  libraries 
D)  glossaries

Question 7

____ is a major contributor to reliable and robust programs.

Accepted Answer

A)  Resolution 
B)  Concatenation 
C)  Encapsulation 
D)  Identification

Question 8

When using inheritance,the class which inherits attributes from another class is called the ____________________.

Accepted Answer

The answer of When using inheritance,the class which inherits attributes...

Question 9

To specify the sequence of objects (like those in the accompanying figure)that will be selected when the TAB key is pressed,the ____ property is used.

Accepted Answer

A)  TabIndex 
B)  TabOrder 
C)  SelectedIndex 
D)  SelectedItem

Question 10

Case 11-2
Inheritance can be a tricky concept to understand, so you are working with your classmates to come up with some ways to remember how it works.
-Which of the following is NOT an example of a valid base class-subclass relationship that you and your classmates can study as a model?

Accepted Answer

A)  employee-hourly worker 
B)  faculty member-computer science instructor 
C)  president-congressman 
D)  student-scholarship athlete

Question 11

A new class can be added to an application by pressing and holding,or right-clicking,the project name in the Solution Explorer window.

Accepted Answer

A) True 
 B)False

Question 12

Explain what encapsulation is and provide the elements of the three-tier structure.In your explanation of the three-tier structure,discuss how the tiers relate to one another.

Accepted Answer

The answer of Explain what encapsulation is and provide the...

Question 13

____________________ is the concept of separating processing and hiding data within specific classes.

Accepted Answer

The answer of ____________________ is the concept of separating processing...

Question 14

When using inheritance,a subclass cannot use the procedures within the base class.

Accepted Answer

A) True 
 B)False

Question 15

If the developer writes no code for a class constructor,Visual Basic automatically generates whatever processing must be accomplished to prepare the object for use.

Accepted Answer

A) True 
 B)False

Question 16

The ____ tier is a tier within the three-tier structure into which programs are divided.

Accepted Answer

A)  Presentation 
B)  Records 
C)  Business 
D)  Persistence

Question 17

What is the relationship into which a subclass must fit whenever inheritance is used? Provide at least three examples that illustrate this relationship.

Accepted Answer

The answer of What is the relationship into which a...

Question 18

The subclass can use attributes from the base class as if those attributes were defined in the subclass.

Accepted Answer

A) True 
 B)False

Question 19

To instantiate an object,you can use the ____________________ statement.

Accepted Answer

The answer of To instantiate an object,you can use the...

Question 20

The ____ keyword is used to declare a variable that will contain the address of an object created from a class.

Accepted Answer

A)  Dec 
B)  Const 
C)  Dim 
D)  Set

Exam 11: Multiple Classes and Inheritance

Whenever inheritance is used,the subclass must fit into a(n) ____ relationship with the base class.

In a three-tier architecture,the classes in the ____ tier generally use data entered by users and data obtained from storage.

Validation of user input data should occur in the business tier of a three-tier architecture.

The ____________________ property identifies if all digits have been entered into the mask.

The code in a(n) ____ procedure executes before any other code in an object.

Both a base class and its subclass must have ____.

____ is a major contributor to reliable and robust programs.

When using inheritance,the class which inherits attributes from another class is called the ____________________.

To specify the sequence of objects (like those in the accompanying figure) that will be selected when the TAB key is pressed,the ____ property is used.

Case 11-2 Inheritance can be a tricky concept to understand, so you are working with your classmates to come up with some ways to remember how it works. -Which of the following is NOT an example of a valid base class-subclass relationship that you and your classmates can study as a model?

A new class can be added to an application by pressing and holding,or right-clicking,the project name in the Solution Explorer window.

Explain what encapsulation is and provide the elements of the three-tier structure.In your explanation of the three-tier structure,discuss how the tiers relate to one another.

____________________ is the concept of separating processing and hiding data within specific classes.

When using inheritance,a subclass cannot use the procedures within the base class.

If the developer writes no code for a class constructor,Visual Basic automatically generates whatever processing must be accomplished to prepare the object for use.

The ____ tier is a tier within the three-tier structure into which programs are divided.

What is the relationship into which a subclass must fit whenever inheritance is used? Provide at least three examples that illustrate this relationship.

The subclass can use attributes from the base class as if those attributes were defined in the subclass.

To instantiate an object,you can use the ____________________ statement.

The ____ keyword is used to declare a variable that will contain the address of an object created from a class.