1. In which of the following, different forms of a single entity exist?

• Composition y
• Aggregation
• Polymorphism
• Encapsulation

2. Encapsulation means

• Extending the behavior of a class in another class
• Data and behavior are tightly coupled within an object y
• One entity takes all the attributes and operations of the other
• Taking out the common features and put those in a separate class

3. The technique in which we visualize our programming problems according to real life’s problems is called ___

• Structure Programming
• Object Oriented Programming
• Procedural Programming
• Sequential Programming

4. There is no need of “is a” or “is a kind of” relationship in Generalization.

• True
• False

5. If only one behavior of a derived class is incompatible with base class, then it is

• Generalization
• Specialization
• Extension
• Encapsulation

6. The process of hiding unwanted details from users is called __

• Protection
• Encapsulation y
• Argumentation
• Abstraction

7. ___ is automatically called when the object is created.

• member function
• object
• constructor
• None

8. ___ provide the facility to access the data member.

• accesser function
• private function
• inline function
•  None

9. The concept of derived classes is involved in

• inheritance
• encapsulation
• structure
• array

10. Which part of an object exhibits its state?

• Data y
• Operations
• Any public part
• Any private part

• organize data
• pass arguments to objects of classes
• add features to existing classes without rewriting them y
• improve data-hiding and encapsulation

• Dangling pointer
• Memory leakage
• All of given y
• System crash

• True y
• False

• Static
• Implicit
• Explicit
• Virtual y

• Static variables y
• Instance variables
• Primitive variables
• None

• Object member
• non-member y
• data member
• None

• Friendship is one way only y
• Friendship is two way only
• No friendship between classes
• Any kind of friendship

• True y
• False

• Rational_number operator+(Rational_number&obj);
• Rational_number operator+(double&obj); y
• Rational_number operator+(Rational_number&obj, double&num);
• operator+(double&obj);

• The relation operator (>=)
• Assignment operator (=)
• Script operator([])
• Conditional operator(?:) y

• Class is created
• Object is defined
• Object is initialized
• Object is created y

22. Consider the following code segment:
class test
{
int a;
int b;
int c;
public:
test();b(5).c(a).a(b){}}

• 5, 5, 5
• 5, Junk value, 5
• Junk value, 5, Junk value
• Junk value, 5, 5 y

23. If you do not initialize static variable of int type then it is automatically initialized with ___

• 0 y
• 1
• Null
• None

24. In Object Oriented programming, objects communicate with each other through ___

• Messages
• Data members y
• Voice chat
• Ports

25. If we are create array of objects through new operator, then

• We can call overloaded constructor through new
• We can’t call overloaded constructor through new
• We can call default constructor through new
• None y

26. When a base class can be replaced by the derived class then it is called

• sub-typing y
• super-typing
• Generalization
• Specialization

27. ___ and ___ methods can not be declared virtual.

• Private, Static
• Private, Public
• Static, Public y
• None

28. Separation of implementation from interface provides the facility to restrict the ___ from direct access.

• Data Member
• Data Function
• Class
• None y

29. We can access a private static variable through:

• Static data member y
• Static member function
• Global data member
• None

30. Consider the call given below of an overloaded operator “+”
Rational_number_1 + Rational_number_2
Where Rational_number_1 and Rational_number_2 are two objects of Rational_number class (a user defined class). Identify which of the above two objects will be passed as an argument to the overloaded operator function?

• Rational_number_1
• None
• Both Rational_number_1 & Rational_number_2
• any of the two objects, randomly y

31. Static member can not be called with the class name.

• True
• False y

32. In a class declaration, data or functions designated private are accessible

• to any function in the program
• only if you know the password
• to member functions of that class y
• only to public members of the class

33. The ___ keyword tells the compiler to substitute the code within the function definition for every instance of a function call

• virtual
• inline y
• instance
• None

34. The >= operator can’t be overloaded.

• True y
• False

35. Main advantage of inheritance is:

• Better understanding y
• Less understanding
• Reuse
• Less complexity

36. An instance of user defined type is called ___

• Object y
• Class
• Variable
• Program

37. If a class involves dynamic memory allocation, then:

• Default copy constructor, shallow copy is implemented
• User defined copy constructor, shallow copy is implemented y
• Default copy constructor, deep copy is implemented
• User defined copy constructor, deep copy is implemented

38. Information hiding can be achieved through ___

• Encapsulation, Inheritance
• Encapsulation, Polymorphism y
• Encapsulation, Abstraction
• Encapsulation, Overloading

39. In programming, where the actual actions are coded is called:

• Function declaration y
• Function calling
• Function definition
• None

40. Which of the following will happen when a constant function tries to change the value of data members of the class?

• Compiler will allow changing data members
• Program will be executed successfully
• Compile time error will occur y
• Run time error will occur

41. Which of the following features of OOP is used to derive a class from another?

• Encapsulation
• Polymorphism
• Data hiding
• Inheritance y

42. Suppose there is an object of type Person, which of the following can be considered as one of its attributes?

• Name y
• Eat
• Work
• Sleep

43. The ability to derive a class from more than one classes is called.

• Single inheritance
• Encapsulation
• Multiple inheritance y
• Polymorphism

44. Without using Deep copy constructor. A ___ problem can occur.

• System crash
• Memory Leakage
• Dangling pointer
• All of given y

45. Aggregation is implemented using pointer.

• True y
• False

46. Which of the following is directly related to polymorphism?

• Overriding y
• Constant members
• Static members
• None

47. Which of the following is the way to extract common behavior and attributes from the given classes and make a separate class of those common behaviors and attributes?

• Generalization
• Sub-typing y
• Specialization
• Extension

48. We can allocate dynamic memory allocation through ___ key word.

• Static
• Global
• New y
• Constant

49. Which of the following is an advantage of OOP?

• OOP makes it easy to re-use the code
• It provides an ability to create one user defined data type by extending the other
• It provides the facility of defining Abstract data types through which real world entities can be defined better
• All of given y

50. Three main characteristics of “Object Oriented Programming” are

• Encapsulation, inheritance, polymorphism y
• polymorphism, overloading, overriding
• encapsulation, inheritance, dynamic binding
• None

51. In ___ sender of a message does not need to know exact class of the receiver.

• Inheritance
• Encapsulation
• Overloading
• None y

52. Which of the following is not a major element in an object model?

• Abstraction
• Encapsulation y
• Persistance
• Hierarchy

53. Member functions defined inside a class declaration are ___ by default.

• Visible
• Public y
• Private
• Protected

54. Consider the following class:
class A
{
int a, b, c;
public:
A():b(10),c(0),a(7){}};
Choose the correct order of initialization of above data members.

• a, c, b
• b, a, c
• a, b, c
• c, a, b

55. If a class A inherits from class B, then class A is called ___

• Child class
• Base class
• Parent class y
• Super class

56. We can create array of objects if we have a user defined constructor.

• True
• False

57. A class has ___ destructor.

• No
• One
• Two
• Three

58. ___ is creating objects of one class inside another class.

• Association
• Composition
• Aggregation
• Inheritance

59. Constant data members can be initialized by using:

• Constant Member Function
• Non-constant Member Function
• Member initializer List
• Class

60. The sub-object’s life is not dependant on the life of master class in ___

• Composition
• Aggregation
• Separation
• None

61. When we create objects, then space is allocated to:

• Member functions
• Access specifier
• Data members
• None

62. The dot operator (or class member access operator) connects the following two entities (reading from left to right):

• A class member and a class object
• A class object and a class
• A class and a member of that class
• A class object and a member of that class

63. In object oriented programming, disadvantage of inheritance include:

• It provides a useful conceptual framework
• It avoids rewriting a certain piece of code
• It facilitates the class libraries
• It provides independence of classes

64. An abstract class shows ___ behavior.

• Overriding
• Specific
• General
• Overloading

65. If some of objects exhibit identical characteristics, then they belong to:

• Different classes
• Multiple classes
• Same class
• Abstract class

66. Through interface we access object’s ___

• States
• Data members
• Behavior
• Class

67. Object can be declared constant with the use of Constant keyword.

• True
• False

68. If we extend our model, and the rest of model is not affected, then it is called ___

• Consistency
• Flexibility
• Efficiency
• Reusability