OOPS

Question 1

Which constructor will be called from the object obj2 in the following C++ program?

Accepted Answer

a) A(int y, int x)

Question 2

How to access the private member function of a class?

Accepted Answer

using address of member function

Question 3

Why is reusability a desired feature?

Accepted Answer

Decreases testing time

Question 4

Total types of polymorphism in C++ are

Accepted Answer

2

Question 5

which of the following functions can be inherited from the base class?

Accepted Answer

None

Question 6

Consider the following Java program and select the right option from the given options.

Accepted Answer

The above program violates the feature of encapsulation

Question 7

Which of the following class is known as generic class?

Accepted Answer

Template class

Question 8

Which operator overloads using the friend function?

Accepted Answer

*

Question 9

Which among the following feature does not come under the concepts of OOPS?

Accepted Answer

Platform independent

Question 10

Which header file is required by the C++ programming language to use the oops concept?

Accepted Answer

we can easily use oops concept without header file

Question 11

Identify the pure object oriented programming language among the following

Accepted Answer

SmallTalk

Question 12

Who developed object-oriented programming?

Accepted Answer

Alan Kay

Question 13

Why Java is partially OOP language?

Accepted Answer

It support usual declaration of primitive data types

Question 14

Which of the following feature is also known as runtime binding or late binding ?

Accepted Answer

Dynamic binding

Question 15

What is the implicit return type of constructor?

Accepted Answer

A class object in which it is defined

Question 16

When is the object created with a new keyword?

Accepted Answer

At run time

Question 17

How can the concept of encapsulation be achieved in the program ?

Accepted Answer

By using the acccess specifiers

Question 18

Identify the scope resolution operator.

Accepted Answer

::

Question 19

The principle of abstraction _____

Accepted Answer

is used to avoid duplication.

Question 20

Which two features of object-oriented programming are same?

Accepted Answer

Encapsulation and Abstraction

Question 21

What is object in c++?

Accepted Answer

It is instance of a class

Question 22

Why is virtual function mainly used to achieve?

Accepted Answer

Runtime poymorphism

Question 23

The object cannot be ______?

Accepted Answer

passed by function

Question 24

Choose the option below for which instance of the class cannot be created

Accepted Answer

Abstract class

Question 25

Which among the following defination is incorrect for polymorphism?

Accepted Answer

It always increases the overhead of function defination.

Question 26

Which of the following is the correct way of declaring a function as constant?

Accepted Answer

int ShowData(void) const { /* statements */ }

Question 27

Which feature of OOP is indicated by the following code?

Accepted Answer

Encapsulation and Inheritance

Question 28

Identify the option below which is not a property of the object .

Accepted Answer

Names

Question 29

How do encapsulation and abstraction differ?

Accepted Answer

Binding and hinding

Question 30

The concept of encapsulation helps in writing which type of classes in the Java programming language?

Accepted Answer

Immutable classes

Question 31

Total access specifiers on OOPS for C++?

Accepted Answer

3

Question 32

using the concept of encapsulation security of the data is ___

Accepted Answer

Ensured to some extent

Question 33

A single program of OOPS contains _________classes

Accepted Answer

Any number

Question 34

Identify the incorrect constructor type.

Accepted Answer

Friend constructor

Question 35

The combination of abstraction of the data and code is viewed in ___

Accepted Answer

Object

Question 36

Which of the following statement of a program is not right?

Accepted Answer

class teacher{}s[];

Question 37

Which constructor will be called from the object created in the below C++ code?

Accepted Answer

d) Compile time error

Question 38

Which operator can be used to free the memory alloacted for an objevt in C++?

Accepted Answer

delete

Question 39

What happens when an object is passed by reference?

Accepted Answer

Destructor is not called

Question 40

Dynamic memory allocation can be done using

Accepted Answer

Both a and b

Question 41

Which operator among the following can be used to illustrate the feature of polymorphism?

Accepted Answer

Overloading <<

Question 42

Choose the option below which is not a member of the class

Accepted Answer

Friend function

Question 43

Which member of superclass is never accessible to the subclass?

Accepted Answer

Private member

Question 44

Under which pillar of OOPS do base class and derived class relationships come?

Accepted Answer

Inheritance

Question 45

To access data members of a class ,which of the following is used?

Accepted Answer

Dot or arrow operator

Question 46

Total instances of an abstract class that can be created

Accepted Answer

0

Question 47

Which access specifiers is usually used for data members of a class?

Accepted Answer

Private

Question 48

Which of the following is not an oops concept?

Accepted Answer

Compilation

Question 49

Which of the following variable violates the defination of encapsulation?

Accepted Answer

Global variables

Question 50

Which of the following definition best describes the concept of polymorphism?

Accepted Answer

It is the ability to process the message or data in more than one form

OOPS

Questions 50

OOPS

Questions 50