Cocubes OOPs Questions with Answers

Question 1

Time: 00:00:00
Which of the following statements is correct?

Base class pointer cannot point to derived class.

Base class pointer cannot point to derived class.

Derived class pointer cannot point to base class.

Derived class pointer cannot point to base class.

Pointer to derived class cannot be created.

Pointer to derived class cannot be created.

Pointer to base class cannot be created.

Pointer to base class cannot be created.

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Question 2

Time: 00:00:00
How many types of polymorphisms are supported by C++?

1

1

2

2

3

3

4

4

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C++ supports 3 types of polymorphism 1) ad-hoc polymorphism 2) parametric polymorphism 3) subtype polymorphism

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Question 3

Time: 00:00:00
Choose correct statement for  overloading of functions?

Virtual polymorphism

Virtual polymorphism

Transient polymorphism

Transient polymorphism

Ad-hoc polymorphism

Ad-hoc polymorphism

Pseudo polymorphism

Pseudo polymorphism

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Question 4

Time: 00:00:00
Which of the following is correct about function overloading?

The types of arguments are different.

The types of arguments are different.

The order of argument is different.

The order of argument is different.

The number of argument is same.

The number of argument is same.

Both A and B.

Both A and B.

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Overloading: --Same function name --different return type --different number of arguments --different order of arguments --different types of arguments

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Question 5

Time: 00:00:00
What is Dynamic binding

as same as Data hiding

as same as Data hiding

waiting until compile time to determine which function to call

waiting until compile time to determine which function to call

waiting until runtime to determine which function to call

waiting until runtime to determine which function to call

None of the above

None of the above

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Question 6

Time: 00:00:00
____ cannot be used with the keyword virtual?

class

class

member functions

member functions

constructor

constructor

destructor

destructor

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Question 7

Time: 00:00:00
The compiler checks the type of reference in the object and not the type of object.

Inheritance

Inheritance

Polymorphism

Polymorphism

Abstraction

Abstraction

Encapsulation

Encapsulation

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Question 8

Time: 00:00:00
Which of the following are available only in the class hierarchy chain?

Public data members

Public data members

Private data members

Private data members

Protected data members

Protected data members

Member functions

Member functions

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Question 9

Time: 00:00:00
Pick correct statements about inline functions

It speeds up execution.

It speeds up execution.

It slows down execution.

It slows down execution.

It increases the code size.

It increases the code size.

Both A and C.

Both A and C.

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Question 10

Time: 00:00:00
Which one of the following options is correct?

Friend function can access public data members of the class.

Friend function can access public data members of the class.

Friend function can access protected data members of the class.

Friend function can access protected data members of the class.

Friend function can access private data members of the class.

Friend function can access private data members of the class.

All of the above.

All of the above.

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["0","40","60","80","100"]
["Need more practice! \r\n","Keep trying! \r\n","Not bad! \r\n","Good work! \r\n","Perfect! \r\n"]