Question 1

A regular class is sometimes called a(n) ____________.

Accepted Answer

A)  concrete class 
B)  base class 
C)  derived class 
D)  abstract class 
A)  concrete class 
B)  base class 
C)  derived class 
D)  abstract class A

Question 2

When one object is a specialized version of another object, there is a(n) ____________ between them.

Accepted Answer

A)  1:1 ratio 
B)  "is a" relationship 
C)  common bond 
D)  shared interest 
A)  1:1 ratio 
B)  "is a" relationship 
C)  common bond 
D)  shared interest B

Question 3

In object oriented programming, ____________ is used to create an "is a" relationship among classes.

Accepted Answer

A)  inheritance 
B)  progression 
C)  logic 
D)  elimination 
A)  inheritance 
B)  progression 
C)  logic 
D)  elimination A

Question 4

The ____________ declares that a derived class is allowed to override a method in the base class.

Accepted Answer

A)  override keyword 
B)  class keyword 
C)  virtual keyword 
D)  static keyword 
A)  override keyword 
B)  class keyword 
C)  virtual keyword 
D)  static keyword

Question 5

A class that is not intended to be instantiated but is to be used only as a base class is called a(n) ____________.

Accepted Answer

A)  abstract class 
B)  dummy class 
C)  placeholder 
D)  entity class 
A)  abstract class 
B)  dummy class 
C)  placeholder 
D)  entity class

Question 6

Which one of the following is a specialized version of a general food substance?

Accepted Answer

A)  pizza 
B)  chocolate 
C)  ice cream 
D)  all of these 
A)  pizza 
B)  chocolate 
C)  ice cream 
D)  all of these

Question 7

Properties in a base class can be overridden in the same way that methods can be overridden.

Accepted Answer

A) True 
 B)False

Question 8

Which one of the following is a class header indicating that we are defining a class named Amphibian, and it is derived from the Animal class?

Accepted Answer

A) Amphibian : Animal B) Animal(Amphibian) C) Animal->Amphibian D) Amphibian A) Amphibian : Animal B) Animal(Amphibian) C) Animal->Amphibian D) Amphibian

Question 9

If the derived class introduces additional methods, properties, or fields, as base class reference variable cannot access them.

Accepted Answer

A) True 
 B)False

Question 10

To allow a property to be overridden in the ____________ you write the virtual keyword in the property declaration.

Accepted Answer

A)  class header 
B)  derived class 
C)  base class 
D)  class constructor 
A)  class header 
B)  derived class 
C)  base class 
D)  class constructor

Question 11

When you want to make sure a specific constructor from the base class is used, the derived class constructor must explicitly call the base class constructor using the ____________.

Accepted Answer

A)  base keyword 
B)  const keyword 
C)  Override method 
D)  out parameter 
A)  base keyword 
B)  const keyword 
C)  Override method 
D)  out parameter

Question 12

You can think of the derived class as an extended version of the base class.

Accepted Answer

A) True 
 B)False

Question 13

A statement that tries to use the new operator instantiate an abstract class will not compile.

Accepted Answer

A) True 
 B)False

Question 14

In the real world you can find many objects that are specialized versions of more general objects.

Accepted Answer

A) True 
 B)False

Question 15

To declare a class as abstract, you use the ____________ in the class header.

Accepted Answer

A)  void keyword 
B)  new keyword 
C)  abstract keyword 
D)  static keyword 
A)  void keyword 
B)  new keyword 
C)  abstract keyword 
D)  static keyword

Question 16

A method that accepts a base class variable as a parameter cannot accept a derived class variable as a parameter.

Accepted Answer

A) True 
 B)False

Question 17

A(n) ____________ is a method that appears in a base class but expects to be overridden in a derived class.

Accepted Answer

A)  shadow method 
B)  base method 
C)  derived method 
D)  abstract method 
A)  shadow method 
B)  base method 
C)  derived method 
D)  abstract method

Question 18

Inheritance involves a base class and a relative class.

Accepted Answer

A) True 
 B)False

Question 19

A base class reference variable knows only about the members that are declared in the ____________.

Accepted Answer

A)  derived class 
B)  base class 
C)  method header 
D)  parameterless constructor 
A)  derived class 
B)  base class 
C)  method header 
D)  parameterless constructor

Question 20

You cannot assign a base class reference to a derived class variable.

Accepted Answer

A) True 
 B)False

A regular class is sometimes called a(n) ____________.

When one object is a specialized version of another object, there is a(n) ____________ between them.

In object oriented programming, ____________ is used to create an "is a" relationship among classes.

The ____________ declares that a derived class is allowed to override a method in the base class.

A class that is not intended to be instantiated but is to be used only as a base class is called a(n) ____________.

Which one of the following is a specialized version of a general food substance?

Properties in a base class can be overridden in the same way that methods can be overridden.

Which one of the following is a class header indicating that we are defining a class named Amphibian, and it is derived from the Animal class?

If the derived class introduces additional methods, properties, or fields, as base class reference variable cannot access them.

To allow a property to be overridden in the ____________ you write the virtual keyword in the property declaration.

When you want to make sure a specific constructor from the base class is used, the derived class constructor must explicitly call the base class constructor using the ____________.

You can think of the derived class as an extended version of the base class.

A statement that tries to use the new operator instantiate an abstract class will not compile.

In the real world you can find many objects that are specialized versions of more general objects.

To declare a class as abstract, you use the ____________ in the class header.

A method that accepts a base class variable as a parameter cannot accept a derived class variable as a parameter.

A(n) ____________ is a method that appears in a base class but expects to be overridden in a derived class.

Inheritance involves a base class and a relative class.

A base class reference variable knows only about the members that are declared in the ____________.

You cannot assign a base class reference to a derived class variable.

Introduction to Computers and Programming

Introduction to Visual C

Processing Data

Making Decisions

Loops, Files, and Random Numbers

Modularizing Your Code With Methods

Arrays and Lists

More About Processing Data

Classes and Multiform Projects

Databases

Filters

Exam 10: Inheritance and Polymorphism

A regular class is sometimes called a(n) ____________.

When one object is a specialized version of another object, there is a(n) ____________ between them.

In object oriented programming, ____________ is used to create an "is a" relationship among classes.

The ____________ declares that a derived class is allowed to override a method in the base class.

A class that is not intended to be instantiated but is to be used only as a base class is called a(n) ____________.

Which one of the following is a specialized version of a general food substance?

Properties in a base class can be overridden in the same way that methods can be overridden.

Which one of the following is a class header indicating that we are defining a class named Amphibian, and it is derived from the Animal class?

If the derived class introduces additional methods, properties, or fields, as base class reference variable cannot access them.

To allow a property to be overridden in the ____________ you write the virtual keyword in the property declaration.

When you want to make sure a specific constructor from the base class is used, the derived class constructor must explicitly call the base class constructor using the ____________.

You can think of the derived class as an extended version of the base class.

A statement that tries to use the new operator instantiate an abstract class will not compile.

In the real world you can find many objects that are specialized versions of more general objects.

To declare a class as abstract, you use the ____________ in the class header.

A method that accepts a base class variable as a parameter cannot accept a derived class variable as a parameter.

A(n) ____________ is a method that appears in a base class but expects to be overridden in a derived class.

Inheritance involves a base class and a relative class.

A base class reference variable knows only about the members that are declared in the ____________.

You cannot assign a base class reference to a derived class variable.

Introduction to Computers and Programming

Introduction to Visual C

Processing Data

Making Decisions

Loops, Files, and Random Numbers

Modularizing Your Code With Methods

Arrays and Lists

More About Processing Data

Classes and Multiform Projects

Databases

Filters