Object Oriented Programming MCQs

Page No. 54

Virtual functions can’t be made friend function of other classes.


aTrue

✓


bFalse

✖


cA & B

✖


d None of the above

✖


View Answer True

Virtual functions can never be made _______________


aStatic function

✓


bParameterized function

✖


cDefault argument function

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dZero parameter function

✖


View Answer Static function

In which access specifier should a virtual function be defined?


aPrivate

✖


b Public

✓


cProtected

✖


dDefault

✖


View Answer Public

The resolving of virtual functions is done at ______________


aCompile time

✖


bInterpret time

✖


cRuntime

✓


d Writing source code

✖


View Answer Runtime

Where the virtual function should be defined?


aTwice in base class

✖


bDerived class

✖


cBase class and derived class

✖


dBase class

✓


View Answer Base class

Which keyword is used to declare virtual functions?


avirtual

✓


bvirt

✖


canonymous

✖


dvirtually

✖


View Answer virtual

Virtual functions are mainly used to achieve _____________


aCompile time polymorphism

✖


b Interpreter polymorphism

✖


cRuntime polymorphism

✓


d Functions code polymorphism

✖


View Answer Runtime polymorphism

What does a virtual function ensure for an object, among the following?


aCorrect method is called, regardless of the class defining it

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bCorrect method is called, regardless of the object being called

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c Correct method is called, regardless of the type of reference used for function call

✓


dCorrect method is called, regardless of the type of function being called by objects

✖



Virtual function is ______ class function which expected to be redefined in ______ class, so that when reference is made to derived class object using pointer then we can call virtual function to execute ________ class definition version.


aBase, derived, derived

✓


bDerived, Derived, Derived

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cBase, derived, base

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dBase, base, derived

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The abstract method definition can be made ___________ in derived class.


aPrivate

✖


bProtected

✖


cPublic

✖


dPrivate, public, or protected

✓



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