Deck 15: Inheritance, Polymorphism, and Virtual Functions

Question 1

The ________ destructor is called before the ________ destructor.

A)base, derived
B)derived, base
C)public, private
D)private, public
E)None of these

Answer 1

derived, base

Question 2

Multiple inheritance opens the opportunity for a derived class to have ________ members.

A)dynamic
B)private
C)public
D)ambiguous
E)None of these

Answer 2

ambiguous

Question 3

________ to a base class may be assigned the address of a derived class object.

A)Access specifiers
B)Static members
C)Private members
D)Pointers
E)None of these

Answer 3

Pointers

Question 4

Arguments are passed to the base class destructor function by the ________ class ________ function.

A)derived, constructor
B)derived, destructor
C)base, constructor
D)base, destructor
E)None of these

Question 5

The base class's ________ affects the way its members are inherited by the derived class.

A)name
B)return data type
C)access specification
D)A and B
E)None of these

Question 6

________ members of a base class are never accessible to a derived class.

A)Public
B)Private
C)Protected
D)A, B, and C
E)None of these

Question 7

The ________ constructor is called before the ________ constructor.

A)base, derived
B)derived, base
C)public, private
D)private, public
E)None of these

Question 8

When you derive a class from an existing class, you ________ add new data and functions.

A)never
B)must
C)may
D)None of these

Question 9

Protected members of a base class are like ________, but they may be accessed by derived classes.

A)constructor functions
B)static members
C)private members
D)public members
E)None of these

Question 10

In an inheritance situation, the new class that you create from an existing class is known as the ________.

A)derived class
B)inheritor
C)child class
D)A and C
E)None of these

Question 11

The term ________ means the ability to take many forms.

A)inheritance
B)polymorphism
C)member function
D)encapsulation
E)None of these

Question 12

When a derived class has two or more base classes, the situation is known as ________.

A)multiple inheritance
B)polymorphism
C)encapsulation
D)access specification
E)None of these

Question 13

The following statement:
Allows the ________ members of the Car class to access ________ members of the Vehicle class.

A)private, private
B)public, private
C)protected, private
D)public, protected
E)None of these

Question 14

The compiler performs ________ on virtual functions.

A)static binding
B)dynamic binding
C)additional error checking
D)no special services
E)None of these

Question 15

When more than one class is derived from a base class, the situation is called:

A)polymorphism
B)population
C)multiplicity
D)encapsulation
E)None of these

Question 16

The base class access specification determines how ________ members in the base class may be accessed by derived classes.

A)private
B)public
C)protected
D)A, B, and C
E)None of these

Question 17

When the compiler binds a member function call with the version of the function that resides in the same class as the call itself, this is considered ________ binding.

A)local
B)safe
C)static
D)dynamic
E)None of these

Question 18

A ________ of a base class expects to be overridden in a derived class.

A)constructor function
B)destructor function
C)static function
D)virtual function
E)None of these

Question 19

________ allows us to create new classes based on existing classes.

A)Polymorphism
B)Inheritance
C)Function overloading
D)The copy constructor
E)None of these

Question 20

In the following statement: class car :
________ is the base class.

A)car
B)vehicle
C)public
D)class
E)None of these

Question 21

The base class access specification can be viewed as a filter that base class members must pass through when becoming inherited members of a derived class.

Question 22

In the following statement:
What is being protected?

A)derived class functions
B)base class members
C)derived class data
D)future inherited classes
E)None of these

Question 23

When member functions behave differently, depending upon which object performed the call, this is an example of ________.

A)chaos theory
B)virtual insubordination
C)polymorphism
D)encapsulation
E)None of these

Question 24

Static binding occurs when the compiler binds a function call with the function call that resides in the same class as the call itself.

Question 25

A derived class may not have any classes derived from it.

Question 26

C++ 11 introduces the ________ key word to help prevent subtle errors when overriding virtual functions.

A)const
B)final
C)override
D)virtual
E)None of these

Question 27

More than one class may be derived from a base class.

Question 28

In the following statement:
________ is the derived class.

A)Car
B)Vehicle
C)protected
D)Cannot be determined
E)None of these

Question 29

A virtual function is declared by placing the key word ________ in front of the return type in the base class's function declaration.

A)virtual
B)private
C)public
D)protected
E)None of these

Question 30

A derived class may become a base class, if another class is derived from it.

Question 31

Pointers to a base class may be assigned the address of a derived class object.

Question 32

________ is commonly used to extend a class, or to give it additional capabilities.

A)Inheritance
B)Privacy
C)The constructor
D)The destructor
E)None of these

Question 33

A member function of a derived class may not have the same name as a member function of a base class.

Question 34

________ functions are dynamically bound by the compiler.

A)Constructor
B)Destructor
C)Static
D)Virtual
E)None of these

Question 35

Polymorphism is when ________ in a class hierarchy perform differently, depending upon which object performs the call.

A)base class constructors
B)derived class destructors
C)member functions
D)derived class constructors
E)None of these

Question 36

A virtual function is a member function that expects to be ________ in a derived class.

A)ignored
B)called frequently
C)overridden
D)private
E)None of these

Question 37

In an inheritance situation, you may not pass arguments to a base class constructor.

Question 38

When arguments must be passed to the base class constructor, they are passed from the derived class constructor's header line.

Question 39

In C++ 11, if a derived class attempts to override a final member function, the compiler generates an error.

Question 40

Multiple inheritance is when a ________ class has ________ base classes.

A)base, no
B)derived, two or more
C)derived, no
D)compound, more than two
E)None of these