Object- Oriented Programming Interview Questions - 51

1. If class A has two nested classes B and C. Class D has one nested class E, and have inherited class A. If E inherits B and C, then:

A. It shows multiple inheritance

B. It shows hierarchical inheritance

C. It shows multiple inheritance

D. Multiple inheritance among nested classes, and single level for enclosing classes

Correct Answer is : Multiple inheritance among nested classes, and single level for enclosing classes

2. In hierarchical inheritance, all the classes involve some kind of inheritance. (True/ False)

A. TRUE

B. FALSE

C.

D.

Correct Answer is : FALSE

3. Which type of inheritance cannot involve private inheritance?

A. Single level

B. Multiple

C. Hybrid

D. All types can have private inheritance

Correct Answer is : All types can have private inheritance

4. How many classes can be inherited by a single class in multiple inheritance (C++)?

A. Only 2

B. Only 27

C. Only 1024

D. Any number of classes can be inherited

Correct Answer is : Any number of classes can be inherited

5. How many classes can be inherited by a single class in java?

A. Only 1

B. Only 27

C. Only 255

D. Only 1024

Correct Answer is : Only 1

6. If multi-level inheritance is used, First class B inherits class A, then C inherits B and so on. Till how many classes can this go on?

A. Only till class C

B. Only till class J

C. Only till class Z

D. There is no limit

Correct Answer is : There is no limit

7. How many types of member functions are possible in general?

A. 2

B. 3

C. 4

D. 5

Correct Answer is : 5

8. Simple member functions are ______________________

A. Ones defined simply without any type

B. Ones defined with keyword simple

C. Ones that are implicitly provided

D. Ones which are defined in all the classes

Correct Answer is : Ones defined simply without any type

9. What are static member functions?

A. Functions which use only static data member but can’t be accessed directly

B. Functions which uses static and other data members

C. Functions which can be access outside the class with the data members

D. Functions using only static data and can be accessed directly in main() function

Correct Answer is : Functions using only static data and can be accessed directly in main() function

10. How can static member function can be accessed directly in main() function?

A. Dot operator

B. Colon

C. Scope resolution operator

D. Arrow operator

Correct Answer is : Scope resolution operator

11. Correct syntax to access the static member functions from the main() function is:

A. classObject::functionName();

B. className::functionName();

C. className:classObject:functionName();

D. className.classObject:functionName();

Correct Answer is : className::functionName();

12. What are const member functions?

A. Functions in which none of the data members can be changed in a program

B. Functions in which only static members can be changed

C. Functions which treat all the data members as constant and doesn’t allow changes

D. Functions which can change only the static members

Correct Answer is : Functions which treat all the data members as constant and doesn’t allow changes

13. Which among the following best describes the inline member functions?

A. Functions defined inside the class only

B. Functions with keyword inline only

C. Functions defined outside the class

D. Functions defined inside the class or with the keyword inline

Correct Answer is : Functions defined inside the class or with the keyword inline

14. What are friend member functions (C++)?

A. Member function which can access all the members of a class

B. Member function which can modify any data of a class

C. Member function which doesn’t have access to private members

D. Non-member functions which have access to all the members (including private) of a class

Correct Answer is : Non-member functions which have access to all the members (including private) of a class

15. What is the syntax of a const member function?

A. void fun() const {}

B. void fun() constant {}

C. void const fun() {}

D. const void fun(){}

Correct Answer is : void fun() const {}

16. Which keyword is used to make a nonmember function as friend function of a class?

A. friendly

B. new

C. friend

D. connect

Correct Answer is : friend

17. Member functions _____________________

A. Must be defined inside class body

B. Can be defined inside class body or outside

C. Must be defined outside the class body

D. Can be defined in another class

Correct Answer is : Must be defined outside the class body

18. All type of member functions can’t be used inside a single class.

A. TRUE

B. FALSE

C.

D.

Correct Answer is : FALSE

19. Which among the following is true?

A. Member functions can never be private

B. Member functions can never be protected

C. Member functions can never be public

D. Member functions can be defined in any access specifier

Correct Answer is : Member functions can be defined in any access specifier

20. Which keyword is used to define the static member functions?

A. static

B. stop

C. open

D. state

Correct Answer is : static

Object Oriented Programming interview questions part 51

Object Oriented Programming interview questions part 51

Take as many assements as you can to improve your validate your skill rating

Total Questions: 20

1. If class A has two nested classes B and C. Class D has one nested class E, and have inherited class A. If E inherits B and C, then:

2. In hierarchical inheritance, all the classes involve some kind of inheritance. (True/ False)

3. Which type of inheritance cannot involve private inheritance?

4. How many classes can be inherited by a single class in multiple inheritance (C++)?

5. How many classes can be inherited by a single class in java?

6. If multi-level inheritance is used, First class B inherits class A, then C inherits B and so on. Till how many classes can this go on?

7. How many types of member functions are possible in general?

8. Simple member functions are ______________________

9. What are static member functions?

10. How can static member function can be accessed directly in main() function?

11. Correct syntax to access the static member functions from the main() function is:

12. What are const member functions?

13. Which among the following best describes the inline member functions?

14. What are friend member functions (C++)?

15. What is the syntax of a const member function?

16. Which keyword is used to make a nonmember function as friend function of a class?

17. Member functions _____________________

18. All type of member functions can’t be used inside a single class.

19. Which among the following is true?

20. Which keyword is used to define the static member functions?

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