Notesala

1. What does OOP stand for?

Object-Oriented Program

Object-Oriented Programming

Object-Oriented Protocol

Object-Oriented Process

2. Which of the following is not a core concept of OOP?

Inheritance

Encapsulation

Compilation

Polymorphism

3. What is the process of hiding the implementation details called?

Abstraction

Encapsulation

Inheritance

Polymorphism

4. Which of the following allows a class to inherit properties from another class?

Inheritance

Encapsulation

Polymorphism

Abstraction

5. What is a class?

A blueprint for creating objects

A type of object

An instance of an object

None of the above

6. What is an object?

An instance of a class

A blueprint for creating classes

A type of variable

A function

7. Which keyword is used to define a class in most OOP languages?

class

define

struct

object

8. What is the primary purpose of a constructor?

To create an object

To destroy an object

To initialize an object

To copy an object

9. What is polymorphism?

Ability to take multiple forms

A process of combining data

A method of inheritance

None of the above

10. Which of the following is true about encapsulation?

It hides data

It allows data access

It combines data

None of the above

11. What does inheritance provide in OOP?

Reusability

Abstraction

Complexity

All of the above

12. Which of the following is an example of a built-in data type?

Class

Object

Integer

Method

13. What is a destructor?

A function called when an object is created

A function called when an object is destroyed

A function that creates objects

None of the above

14. What is method overloading?

Having multiple methods with the same name but different parameters

Changing the implementation of a method

None of the above

All of the above

15. What is method overriding?

Changing a method's name

Redefining a method in a derived class

Combining methods

None of the above

16. Which of the following is an example of an access modifier?

Public

Class

Method

Function

17. What is the purpose of the super keyword?

To call the parent class constructor

To create a new object

To delete an object

None of the above

18. Which of the following statements about interfaces is true?

An interface can contain method implementations

An interface can be instantiated

An interface can extend multiple interfaces

None of the above

19. What is the relationship between a class and an object?

An object is a blueprint of a class

A class is a blueprint for creating objects

They are the same

None of the above

20. What do you call a class that cannot be instantiated?

Abstract class

Concrete class

Interface

None of the above

21. Which of the following is not an OOP language?

C++

Java

Python

C

22. In OOP, what is a subclass?

A class that is derived from another class

A class that has no base class

A class with multiple methods

None of the above

23. What does the this keyword refer to in a class?

The current object

The parent class

The current class

None of the above

24. Which of the following is not a benefit of OOP?

Code reusability

Improved productivity

Increased performance

Complexity

25. In which of the following scenarios would you use polymorphism?

When you need a single interface for multiple implementations

When creating a new object

When hiding data

None of the above

26. What is a key feature of OOP?

Global variables

Functions

Classes and objects

None of the above

27. What is the purpose of the final keyword in OOP?

To declare a constant

To prevent method overriding

To define an abstract class

None of the above

28. Which of the following terms refers to the act of combining data and functions?

Encapsulation

Abstraction

Inheritance

Polymorphism

29. What is a primary benefit of using abstract classes?

They cannot be instantiated

They allow multiple inheritance

They define concrete methods

None of the above

30. What is the difference between a class and a structure in OOP?

A class can have methods, but a structure cannot

A structure is a reference type while a class is a value type

A class is private by default, while a structure is public

None of the above

31. In OOP, what does the term "data hiding" refer to?

Protecting data from unauthorized access

Keeping data secret

Hiding functions

None of the above

32. What is a class method?

A method that can be called without creating an object

A method that can be called on an object

A method with no parameters

None of the above

33. Which of the following is true regarding constructors?

They have a return type

They cannot be overloaded

They are called automatically

They must be public

34. What is the output of the following code snippet if the class is named Example? Example obj;

An error

A new object named obj

A new class named Example

None of the above

35. What does the private access modifier do?

Restricts access to the class only

Allows access from anywhere

Allows access only to subclasses

None of the above

36. Which of the following is a characteristic of a base class?

It can be instantiated

It cannot have subclasses

It can have derived classes

None of the above

37. In OOP, what is encapsulation?

The combination of data and methods into a single unit

The process of inheritance

A way to define abstract classes

None of the above

38. Which keyword is used to inherit a class in most OOP languages?

inherits

extends

implements

None of the above

39. What is a concrete class?

A class that cannot be instantiated

A class that can be instantiated

A class with only abstract methods

None of the above

40. Which of the following statements is true about interfaces?

An interface can contain state

An interface can have methods with implementations

An interface can extend other interfaces

All of the above

41. What is the purpose of the static keyword in OOP?

To create class-level variables

To create instance-level variables

To define constants

None of the above

42. What do you call a function that is defined inside a class?

Method

Constructor

Variable

None of the above

43. What is the output of the following code? cout << typeid(int).name();

int

Integer

Error

None of the above

44. What is the term for creating multiple functions with the same name but different parameters?

Function Overloading

Function Overriding

Function Hiding

None of the above

45. What does it mean if a class is derived from more than one base class?

Multiple inheritance

Single inheritance

Abstract class

None of the above

46. What is a namespace in OOP?

A way to group related classes

A method of inheritance

A type of variable

None of the above

47. What is the primary goal of OOP?

To make programming easier

To improve performance

To simplify syntax

None of the above

48. What is a key characteristic of an abstract class?

It cannot be instantiated

It can have concrete methods

It can be derived from another class

None of the above

49. What is the purpose of using const in a method declaration?

To declare a constant

To prevent modification of parameters

To define a static method

None of the above

50. What happens if a class does not define a constructor?

A default constructor is provided

An error occurs

The class cannot be used

None of the above

51. What is the purpose of the protected access modifier?

To allow access from anywhere

To allow access only to derived classes

To restrict access to the class only

None of the above

52. What do you call the data members of a class?

Properties

Variables

Attributes

All of the above

53. What is the role of a virtual keyword in OOP?

To define a constant

To allow method overriding

To create an abstract class

None of the above

54. What is a class that cannot be instantiated called?

Abstract class

Concrete class

Interface

None of the above

55. In which situation would you use a base class?

When creating a specific object

When implementing an interface

When defining a general type

None of the above

56. What is the purpose of the override keyword?

To indicate a method is being overridden

To create an abstract method

To define a constructor

None of the above

57. What is a key advantage of using OOP?

Complexity

Reusability

Increased learning curve

None of the above

58. What is the default access modifier for class members in C++?

Public

Private

Protected

None of the above

59. Which of the following can be used to create an object of a class?

Constructor

Destructor

Member function

None of the above

60. What is inheritance in OOP?

Creating new classes from existing ones

Combining classes

Hiding data

None of the above

61. Which of the following is true about a derived class?

It cannot have a constructor

It inherits properties from a base class

It can only be abstract

None of the above

62. What is a key feature of encapsulation?

Grouping related data and methods

Combining different data types

None of the above

All of the above

63. In OOP, what does public mean?

Accessible from any code

Accessible only within the class

Accessible only by subclasses

None of the above

64. Which of the following best describes a method?

A function defined inside a class

A variable defined in a class

A blueprint for an object

None of the above

65. What is the output of a method that does not return a value?

nan

0

void

None of the above

66. What is a key feature of object-oriented languages?

Use of variables

Use of functions

Use of classes and objects

None of the above

67. In OOP, which of the following refers to a set of attributes and methods?

Class

Object

Function

None of the above

68. Which of the following represents the relationship of "is-a"?

Inheritance

Aggregation

Composition

None of the above

69. What is the primary function of an interface?

To provide a blueprint for classes

To implement methods

To define variables

None of the above

70. What is the term for the ability to call the same method on different objects?

Polymorphism

Inheritance

Encapsulation

None of the above

71. Which of the following is an example of data abstraction?

Hiding complex reality

Hiding function implementations

None of the above

All of the above

72. What does the term "method signature" refer to?

The method name and parameters

The method body

The return type

None of the above

73. In OOP, which of the following is true about classes?

Classes can contain data and methods

Classes can only contain data

Classes can only contain methods

None of the above

74. What is the relationship between a base class and a derived class?

Inheritance

Composition

Association

None of the above

75. What is an example of an encapsulation in programming?

A class that contains both data and methods

A function that hides variables

A constant variable

None of the above

76. Which of the following is true about a function in a class?

It can access the class's private data

It cannot access the class's private data

It cannot return a value

None of the above

Unit 5: Object-Oriented Programming (OOP) (10 Hours)

1. What does OOP stand for?

2. Which of the following is not a core concept of OOP?

3. What is the process of hiding the implementation details called?

4. Which of the following allows a class to inherit properties from another class?

5. What is a class?

6. What is an object?

7. Which keyword is used to define a class in most OOP languages?

8. What is the primary purpose of a constructor?

9. What is polymorphism?

10. Which of the following is true about encapsulation?

11. What does inheritance provide in OOP?

12. Which of the following is an example of a built-in data type?

13. What is a destructor?

14. What is method overloading?

15. What is method overriding?

16. Which of the following is an example of an access modifier?

17. What is the purpose of the super keyword?

18. Which of the following statements about interfaces is true?

19. What is the relationship between a class and an object?

20. What do you call a class that cannot be instantiated?

21. Which of the following is not an OOP language?

22. In OOP, what is a subclass?

23. What does the this keyword refer to in a class?

24. Which of the following is not a benefit of OOP?

25. In which of the following scenarios would you use polymorphism?

26. What is a key feature of OOP?

27. What is the purpose of the final keyword in OOP?

28. Which of the following terms refers to the act of combining data and functions?

29. What is a primary benefit of using abstract classes?

30. What is the difference between a class and a structure in OOP?

31. In OOP, what does the term "data hiding" refer to?

32. What is a class method?

33. Which of the following is true regarding constructors?

34. What is the output of the following code snippet if the class is named Example? Example obj;

35. What does the private access modifier do?

36. Which of the following is a characteristic of a base class?

37. In OOP, what is encapsulation?

38. Which keyword is used to inherit a class in most OOP languages?

39. What is a concrete class?

40. Which of the following statements is true about interfaces?

41. What is the purpose of the static keyword in OOP?

42. What do you call a function that is defined inside a class?

43. What is the output of the following code? cout << typeid(int).name();

44. What is the term for creating multiple functions with the same name but different parameters?

45. What does it mean if a class is derived from more than one base class?

46. What is a namespace in OOP?

47. What is the primary goal of OOP?

48. What is a key characteristic of an abstract class?

49. What is the purpose of using const in a method declaration?

50. What happens if a class does not define a constructor?

51. What is the purpose of the protected access modifier?

52. What do you call the data members of a class?

53. What is the role of a virtual keyword in OOP?

54. What is a class that cannot be instantiated called?

55. In which situation would you use a base class?

56. What is the purpose of the override keyword?

57. What is a key advantage of using OOP?

58. What is the default access modifier for class members in C++?

59. Which of the following can be used to create an object of a class?

60. What is inheritance in OOP?

61. Which of the following is true about a derived class?

62. What is a key feature of encapsulation?

63. In OOP, what does public mean?

64. Which of the following best describes a method?

65. What is the output of a method that does not return a value?

66. What is a key feature of object-oriented languages?

67. In OOP, which of the following refers to a set of attributes and methods?

68. Which of the following represents the relationship of "is-a"?

69. What is the primary function of an interface?

70. What is the term for the ability to call the same method on different objects?

71. Which of the following is an example of data abstraction?

72. What does the term "method signature" refer to?

73. In OOP, which of the following is true about classes?

74. What is the relationship between a base class and a derived class?

75. What is an example of an encapsulation in programming?

76. Which of the following is true about a function in a class?

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