OOPS Concepts MCQ Questions Answers

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OOPS Concepts multiple choice questions List

1. Which statements is not correct with regard to Procedural Language?

2. Which are object oriented programming language?

3. Which is honored as the first Object Oriented Programming language having notion of objects, classes and inheritance in it?

4. In Public derivation using C++, which of the following are the ways to access base class members through derived class?

5. Which options are correct with regard to a static variable?

6. Which statements is correct with regard to class based OOPS?

7. Which is the starting point for program execution in C++?

8. Inheritance is a process by which the objects of parent class acquire the properties of a child class.

9. What is Abstraction?

10. Which of the following cannot apply to constructors?

11. Which of the following describes the Function Overloading?

12. What is Encapsulation?

13. Which statements correctly explains Operator Overloading?

14. Which is not constitute the classes relationship?

15. Which is not correct with regard to Operator Overloading?

16. Object in Object Oriented Programming?

17. The dynamic binding is the linking of a procedure call with the code to be executed at runtime.

18. Which of the following is a benefit derived from using OOPS?

19. Which helps to increase the code clarity?

20. Two functions are defined with the same name and same return type. The first one accepts string input parameter type and the second one accepts integer. This represents Abstraction.

21. Which cannot be passed to a function?

22. You have three classes named A, B, and C. The class B is derived from class A and class C is derived from B. Which of the following relations are correct for the given classes?

23. What is Function Overriding?

24. A shared/static method is associated with a Class.

25. What does the following classes (as shown in the given figure) represent? A --> B --> C --> D

26. Which helps to convert a Class into an Abstract?

27. Which statements is correct with regard to Polymorphism?

28. Which types of Inheritance is not known?

29. Object-based programming languages do not support Inheritance and dynamic binding.

30. Which is not a procedural language?

31. Which is not valid for an inline function?

32. Which of the following is an 'Intermediate Base Class' with regard to the given figure: Class A --> Class B (Derived) --> Class C (Derived)

33. In Java, how many times can classes be nested within a class?

34. Function Overloading is based upon the number and/or type of arguments passed.

35. How much memory does a function use up within an object?

36. Is it possible to call a main() inside another main() function in C++?

37. Which of the following statements are correct?

38. What does Data Hiding refer to?

39. Which is not correct with regard to a virtual function in C++?

40. Which statements is correct with regard to Prototype based programming?

41. Why is composition considered a simpler method than inheritance?

42. What is the difference between interfaces and abstract classes?

43. What plays a critical role in testing for syntactic legality?

44. True or false? Private variables are visible outside of the class.

45. If a system is systematically computing “metadata”, what would you use to define that system?

46. What class and extension best demonstrate a HAS-A Relationship?

47. Virtual inheritance is:

48. Programming languages supporting the OOPS paradigm are typically contained within what two classes?

49. A clone method is needed to:

50. What are classes used for?

51. When two methods have the same name, what are they considered, and what kind of binding do they have?

52. Semantically, what has happened if the result rendered is non-computational?

53. True or false? Static variables are visible outside of the class

54. An abstract class can:

55. True or false? Abstract methods are only defined in the parent.

56. What is the most important trait of a polymorphism?

57. When a variable is defined within a class, what is it considered?

58. A mutator method is also known as a:

59. Which of the following is included in the field of formal semantics?

60. Lambda functions are allowed in class definitions

61. Which could be considered a polymorphism?

62. A class can implement one or more interfaces.

63. What is a simple way to think of inheritance?

64. Which classes allows only one object of it to be created?

65. If a user were to observe Java code from the outside world, what would they be able to access?

66. Using traits gives single inheritance languages most of the power of multiple inheritance.

67. True or false? An interface is another name for a class.

68. Ref counts are:

69. What is a primary motivation for using OOP?

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What is OOP and its concept?

The programming paradigm known as "object-oriented programming," or simply "OOP," is based on the idea of objects. Data structures that house both data and methods make up these items. Using objects has the benefit of allowing for their reuse in other programs, which results in more efficient and modular code.

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Why OOPs concept is used?

The solution to this issue is really straightforward: OOPs give the program a clear structure that makes it simple to comprehend, maintain, and alter. Additionally, OOPs have a number of advantages like data hiding and code reuse. Let's examine these ideas in greater detail.

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Why OOPs is used in Java?

Java uses object-oriented programming because it makes it easier to build modular programs. Using the method of modular programming, programmers can divide a big, complicated program into smaller, easier-to-manage chunks. The code is now simpler to comprehend and maintain as a result.

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What are the 5 concepts of OOPs?

The object-oriented programming paradigm is based on five fundamental ideas: abstraction, inheritance, polymorphism, encapsulation, and interfaces. Together, these ideas form an effective framework for building software applications.

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What is object in oops?

An object, which stands in for any entity with a state and behavior, is the fundamental building block of object-oriented programming (OOP). Both attributes and behaviors are representations of an object's state and activity, respectively. Quizack will provide a tonne of oops concepts mcq questions and answers quiz to all applicants.