Which feature best distinguishes OOP from procedural programming?

In OOP, data and functions that operate on that data are bundled together inside a ___.

The concept of reusing code through inheritance represents which OOP advantage?

OOP helps achieve which of the following goals in software design?

Which of the following is not a benefit of OOP?

OOP allows programmers to create __ objects from the same class without rewriting code.

What is the main difference between OOP and procedural programming?

In Python, Object-Oriented Programming is implemented through ___.

Program Example: class A: def __init__(self): self.x = 5 obj = A() print(obj.x) What will this code print?

What is a class in Python?

Which keyword is used to define a class in Python?

In Python, the first argument of every class method must be ___.

When a class is defined, what is actually created in memory?

A class can contain:

Program Output: class Car: wheels = 4 print(Car.wheels) What will be the output?

Which of the following creates an object of a class named “Student”?

A variable defined inside a class but outside any method is called ___.

Program Output: class A: x = 10 def show(self): print(self.x + 5) obj = A() obj.show() What will this print?

Which statement is true about class definition?

What is an object in Python OOP?

Every object in Python has its own ___.

Program Output: class Dog: def __init__(self, name): self.name = name d1 = Dog("Max") print(d1.name) A) Error B) Dog C) Max D) None

Which statement creates two separate objects of the same class?

In Python, object attributes can be accessed using the __ operator.

What happens when an object is deleted in Python?

Program Output: class A: def __init__(self, v): self.v = v x = A(10) y = x y.v = 20 print(x.v) A) 10 B) 20 C) Error D) None

Two objects with the same data but different memory locations are ___.

Which function returns the memory address of an object in Python?

Program Output: class Student: def __init__(self, id): self.id = id def display(self): print("ID:", self.id) s = Student(101) s.display() A) ID 101 B) ID: 101 C) 101 D) Error

What is a method in OOP?

The key difference between a function and a method is that a method ___.

Which keyword is used to define a function or method in Python?

In a class, which argument allows a method to access instance variables?

Program Output: class Calc: def add(self, a, b): return a + b c = Calc() print(c.add(3, 5)) A) 8 B) 35 C) Error D) None

A method that operates on the class itself, not on any instance, is called ___.

Program Output: class A: @staticmethod def show(): return "Static" print(A.show()) A) Static B) Error C) None D) show

What decorator is used for static methods?

When a function is defined outside any class, it is called ___.

Program Output: def greet(name): return "Hello " + name print(greet("User")) A) HelloUser B) Hello User C) Error D) name

What is the purpose of __init__() in Python classes?

When is __init__() executed?

Program Output: class A: def __init__(self): print("Init called") a = A() A) Nothing B) Error C) Init called D) Class A

What is the output of the following code: class A: def __init__(self): print("Init called") a = A()

What is the first argument of __init__() commonly called?

Program Output: class Student: def __init__(self, name): self.name = name s1 = Student("Atif") print(s1.name)

If __init__() is missing from a class, Python ___.

How many __init__() methods can exist in a single Python class?

Program Output: class A: def __init__(self, x=10): self.x = x a = A(20) print(a.x)

If you define __init__() with parameters but call the class without arguments, what happens?

Program Output: class Car: def __init__(self, model, year): self.model = model self.year = year c = Car("Civic", 2022) print(c.model, c.year)

A constructor in Python is a special method that ___.

Which of the following acts as a constructor in Python?

Program Output: class Student: def __init__(self, name): print("Hello", name) s1 = Student("Atif")

Which statement is true about constructors in Python?

What happens if a class has no __init__() method?

Program Output: class A: def __init__(self, x=5): self.x = x obj = A() print(obj.x)

In Python, how do constructors differ from normal methods?

Which constructor runs first in a derived class?

Program Output: class Base: def __init__(self): print("Base") class Derived(Base): def __init__(self): super().__init__() print("Derived") obj = Derived()

Which method destroys an object when it’s no longer needed?

Which of the following best describes the main goal of OOP principles?

Which of these is not one of the four main principles of OOP?

The OOP principle that hides internal details and shows only necessary features is called ___.

The OOP principle that allows objects to take on many forms is known as ___.

Which principle allows a subclass to use methods and attributes of a parent class?

Encapsulation primarily helps in ___.

Program Output: class A: def __init__(self): self.__x = 10 def get_x(self): return self.__x obj = A() print(obj.get_x())

Which OOP principle is most closely related to code reusability?

Program Output: class Parent: def show(self): print("Parent") class Child(Parent): def show(self): print("Child") obj = Child() obj.show()

Which of the following principles helps achieve flexibility by allowing one interface to be used for different data types?

Which of the following are the four main pillars of Object-Oriented Programming?

Which pillar focuses on hiding data within a class to prevent direct access from outside?

Which pillar allows a subclass to reuse the methods and properties of a parent class?

Program Output: class Parent: def show(self): print("Parent") class Child(Parent): def show(self): print("Child") c = Child() c.show()

Which pillar is demonstrated when two methods in different classes share the same name but behave differently?

Abstraction helps in ___.

Program Output: from abc import ABC, abstractmethod class Shape(ABC): @abstractmethod def area(self): pass class Circle(Shape): def area(self): return 3.14 * 5 * 5 c = Circle() print(c.area())

Which of the following shows both Inheritance and Polymorphism?

Program Output: class A: def display(self): print("A") class B(A): pass b = B() b.display()

Which pillar primarily enhances security and prevents unauthorized access to class data?