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55.

Which of the following concepts of OOPS means exposing only necessary information to client?

A.	Encapsulation	B.	Abstraction
C.	Data hiding	D.	Data binding

56.

Why reference is not same as a pointer?

A.	A reference can never be null.	B.	A reference once established cannot be changed.
C.	Reference doesn't need an explicit dereferencing mechanism.	D.	All of the above.

57.

cout is a/an __________ .

A.	operator	B.	function
C.	object	D.	macro

58.

Which of the following concepts provides facility of using object of one class inside another class?

A.	Encapsulation	B.	Abstraction
C.	Composition	D.	Inheritance

59.

Which of the following is an abstract data type?

A.	int	B.	double
C.	string	D.	Class

60.

Which of the following concepts means adding new components to a program as it runs?

A.	Data hiding	B.	Dynamic typing
C.	Dynamic binding	D.	Dynamic loading

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