Object Oriented Programming Concept C++ MCQ AMITY UNIVERSITY

                                     Questions 1 to 30.

1.	Which of the following type of class allows only one object of it to be created?
	A. Virtual class B. Abstract class C. Singleton class D. Friend class Answer: Option C
	Which of the following is not a type of constructor?
	A. Copy constructor B. Friend constructor C. Default constructor D. Parameterized constructor Answer: Option B
	Which of the following statements is correct?
	A. Base class pointer cannot point to derived class. B. Derived class pointer cannot point to base class. C. Pointer to derived class cannot be created. D. Pointer to base class cannot be created. Answer: Option B
	Which of the following is not the member of class?
	A. Static function B. Friend function C. Const function D. Virtual function Answer: Option B
	Which of the following concepts means determining at runtime what method to invoke?
	A. Data hiding B. Dynamic Typing C. Dynamic binding D. Dynamic loading Answer: Option C

6.	Which of the following term is used for a function defined inside a class?
	A. Member Variable B. Member function C. Class function D. Classic function Answer: Option B

7.	Which of the following concept of oops allows compiler to insert arguments in a function call if it is not specified?
	A. Call by value B. Call by reference C. Default arguments D. Call by pointer Answer: Option C

8.	How many instances of an abstract class can be created?
	A. 1 B. 5 C. 13 D. 0 Answer: Option D

9.	Which of the following cannot be friend?
	A. Function B. Class C. Object D. Operator function Answer: Option C

10.	Which of the following concepts of OOPS means exposing only necessary information to client?
	A. Encapsulation B. Abstraction C. Data hiding D. Data binding Answer: Option C

11.	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. Answer: Option D

2.	cout is a/an __________ .
	A. operator B. function C. object D. macro Answer: Option C

13.	Which of the following concepts provides facility of using object of one class inside another class?
	A. Encapsulation B. Abstraction C. Composition D. Inheritance Answer: Option C

14.	How many types of polymorphisms are supported by C++?
	A. 1 B. 2 C. 3 D. 4 Answer: Option B

15.	Which of the following is an abstract data type?
	A. int B. double C. string D. Class Answer: Option D

16.	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 Answer: Option D

17.	Which of the following statement is correct?
	A. A constructor is called at the time of declaration of an object. B. A constructor is called at the time of use of an object. C. A constructor is called at the time of declaration of a class. D. A constructor is called at the time of use of a class. Answer: Option A

18.	Which of the following correctly describes overloading of functions?
	A. Virtual polymorphism B. Transient polymorphism C. Ad-hoc polymorphism D. Pseudo polymorphism Answer: Option C

19.	Which of the following approach is adapted by C++?
	A. Top-down B. Bottom-up C. Right-left D. Left-right Answer: Option B

20.	Which of the following is correct about function overloading?
	A. The types of arguments are different. B. The order of argument is different. C. The number of argument is same. D. Both A and B. Answer: Option D

21.	Which of the following is correct about class and structure?
	A. class can have member functions while structure cannot. B. class data members are public by default while that of structure are private. C. Pointer to structure or classes cannot be declared. D. class data members are private by default while that of structure are public by default. Answer: Option D

22.	Which of the following concepts means wrapping up of data and functions together?
	A. Abstraction B. Encapsulation C. Inheritance D. Polymorphism Answer: Option B

23.	Which of the following concepts means waiting until runtime to determine which function to call?
	A. Data hiding B. Dynamic casting C. Dynamic binding D. Dynamic loading Answer: Option C

25. 

24.	How "Late binding" is implemented in C++?
	A. Using C++ tables B. Using Virtual tables C. Using Indexed virtual tables D. Using polymorphic tables Answer: Option B
	Which of the following operator is overloaded for object cout?
	A. >>  B. <<  C. + D. = Answer: Option B

26.	Which of the following is the correct class of the object cout?
	A. iostream B. istream C. ostream D. ifstream Answer: Option C

27.	Which of the following cannot be used with the keyword virtual?
	A. class B. member functions C. constructor D. destructor Answer: Option C

28.	Which of the following functions are performed by a constructor?
	A. Construct a new class B. Construct a new object C. Construct a new function D. Initialize objects Answer: Option D

29.	Which of the following problem causes an exception?
	A. Missing semicolon in statement in main(). B. A problem in calling function. C. A syntax error. D. A run-time error. Answer: Option D

30.	Which one of the following options is correct about the statement given below? The compiler checks the type of reference in the object and not the type of object.
	A. Inheritance B. Polymorphism C. Abstraction D. Encapsulation Answer: Option B