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11th Computer Science Weekly Test -3 (Inheritance )

MABS Institution

11th Computer Science Weekly Test -3 (Inheritance )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

How many types of inheritanse are there?

3
4
5
2

When more than one derived clauses are created from a single base class called

Multiple
Multilevel
Hybrid
Hierarchical

Which of the following is a constant pointer holds the memory address of the current object?

size of ()
this pointer
pointer
dot pointer

When a derived class inherits from multiple base classes is known as

Multilevel
Multiple
Hierarchical
Hybrid

Which of the following is the correct syntax of inheritance?

Class derived class name : base Class name {define class body};
Class base class name ; derived class name {define class body};
Class derived class name : access base class name {define class body};
Class base class name ; access derived class name {define class body};

Which amongst the following is executed in the order of inheritance?

Destructor
Member function
Constructor
Object

In multiple inheritance the level of inheritance is extended upto _________

2
3
5
many

Members which are not intended to be inherited are declared as

Public
Protected
Private
Private or Protected

Which of the following base class members can be accessed by derived class?
(i) private
(ii) protected
(iii) public

only (i)
only (ii)
both (ii) and (iii)
both (i) and (ii)

Which symbol inheritance?

Dot
Comma
Dollar
At the rate of

Which of the following statement is true or false?
(i) The derived class constructors are executed first
(ii) Derived class cannot inherit the base class constructor.
(iii) In multiple inheritance, the constructor start executing from right to left.
(iv) In multilevel inheritance, the constructors exerted in the order of inheritance

(i) false, (ii) false, (iii) false: (iv) true
(i) false, (ii) true, (iii) false, (iv) false
(i) false, (ii) false, (iii) true, (iv) true
(i) false, (ii) true, (iii) false, (iv) true

If a derived class object is created, which constructor is called first?

Base class constructor
Derived class constructor
Depends on how we call the object
not possible

Which of the following class destructor expires first____________
(i) base class
(ii) derived class

only (i)
only (ii)
both (i) and (ii)
none of these

When classes are inherited with all the visibility modes but derived class cannot access the

private members
protected members
public members
both a and b

This pointer returns

NLCC
Object that is accessing the function
Address of current variable
Address of overriding operator

Which of the following statement is true or false?
(i) When a derived class inherits from many base classes is known as multilevel inheritance
(ii) When many derived classes are created from single base class called multiple inheritance
(iii) The transitive nature of inheritance is multilevel inheritance
(iv) is an example of hierarchical inheritance.

(i) false, (ii) false, (iii) true, (iv) true
(i) true, (ii) false, (iii) true, (iv) true
(i) true, (ii) false, (iii) true, (iv) false
(i) false, (ii) false, (iii) false, (iv) true

How many visibility modes are there in c++?

2
4
3
6

The combination of more than one type of inheritance is called

Hybrid inheritance
Network inheritance
Hierarchical inheritance
Distributed inheritance

Which of the following principle supports transitivity?

Inheritance
Polymorphism
Encapsulation
abstraction

Answer the following table

if base class access specifier is And a Base class member is Then, the derived class member access is

Protected (i) No acess

(ii) Protected

Protected (iii)

(i) Private, (ii) Public, (iii) Protected
(i) Private, (ii) Public, (iii) Public
(i) Protected, (ii) Public, (iii) Protected
(i) Private, (ii) Public, (iii) Private

When a class derived from a class which it self is a derived class is called

Multiple
Multiple
hybrid
None of these

If a base. class is inherited in protected access mode then which among the following is true?

Public and protected members of base class becomes protected members of derived class
Only protected members become protected members of derived class.
Private protected and public all members of base case become private of derived class
Only private members of base, become private of derived class.

class vehicle
{ int wheels;
public:
void input_ data(float,float);
void output_data();
protected:
int passenger;
};
class heavy_vehicle : protected vehicle {
int diesel_petrol;
protected:
int load;
protected:
int load;
public:
voidread_data(float,float)
voidwrite_data(); };
class bus: private heavy_vehicle {
charTicket[20] ;
public:
void fetch_data(char);
voiddisplay_data(); };
};
The member function that is inherited as public by Class Bus

input_data(),
read_data(), output_data()write_data()
fetch _data()
All of these display _data()

The default visibility mode is

public
private
protected
class

class x
{int a;
public:
xOn
};
class y
{x x1;
public:
y(){}
};
class z : public y,x
{
int b;
public:
z(){}
}z1;
What is the order of constructor for object zl to be invoked?

z,y,x,x
x,y,z,x
y,x,x,z
z,y,z

Which of the following statement is true or false?
(i) The constructors are executed in the order of inherited class
(ii) The destructor are executed not in the order of inherited class

(i) true, (ii) false
(i) false, (ii) true
(i) true, (ii) true
(i) false, (ii) false

Which members of the base class will be acquired by the derived class is known by ________

inheritance
scope resolution operator
derived class members
visibility modes

The base class constructor can called by derived class? In which of the following definition.

Base class name: base class constructor( ) ;
Base class name : : base class constructor ( ) ;
Base class name; base class constructor ( );
Base class name! base class consctor ( );

Which of the following is true with respect to inheritance?

Private members of base class are inherited to the derived class with private.
Private members of base class are not inherited to the derived class with private accessibility
public members of base class are inherited but not visible to the derived class.
Protected members of base class are inherited but not visible to the outside class.

When an object of the derived class is created, the compiler first call to the____________.

base class destructor
base class members functions
base class constructor
base class data members
derived class constructor

A class is derived from a class which is a derived class itself, then this is referred to as__________

multiple inheritance
multilevel inheritance
single inheritance
double inheritance

The size of the class without any declaration will occupy________.

0 byte
1 byte
4 bytes
8 bytes

In which type of inheritance the derived class acquired all the base classes properties even though the base clause have no relationship?

Multilevel inheritance
Multiple inheritance
Hybrid inheritance
Hierarchical inheritance

class vehicle
{ int wheels;
public:
void input_ data(float,float);
void output_data();
protected:
int passenger;
};
class heavy_vehicle : protected vehicle {
int diesel_petrol;
protected:
int load;
protected:
int load;
public:
voidread_data(float,float)
voidwrite_data(); };
class bus: private heavy_vehicle {
charTicket[20] ;
public:
void fetch_data(char);
voiddisplay_data(); };
};
The member function that can be accessed by an objects of bus Class is

input data(),
read _data() ,output_ data()write _data()
fetch _data()
All of these display _data()

Which of the following is not a type of inheritance?

Abstract
Multiple
Hybrid
Hierarchical

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