Object Oriented Programming MCQs

Page No. 7

Which problem may arise if we use abstract class functions for polymorphism?


aAll classes are converted as abstract class

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bDerived class must be of abstract type

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cAll the derived classes must implement the undefined functions

✓


dDerived classes can’t redefine the function

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Polymorphism is possible in C language.


aTrue

✓


bFalse

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cA & B

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d None of these

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View Answer True

Which among the following can show polymorphism?


aOverloading ||

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bOverloading +=

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cOverloading <<

✓


dOverloading &&

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View Answer Overloading <<

Which among the following can’t be used for polymorphism?


aStatic member functions

✓


bMember functions overloading

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cPredefined operator overloading

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dConstructor overloading

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In case of using abstract class or function overloading, which function is supposed to be called first?


aLocal function

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bFunction with highest priority in compiler

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cGlobal function

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dFunction with lowest priority because it might have been halted since long time, because of low priority

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Which type of function among the following shows polymorphism?


aInline function

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bVirtual function

✓


cUndefined functions

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dClass member functions

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View Answer Virtual function

If same message is passed to objects of several different classes and all of those can respond in a different way, what is this feature called?


aInheritance

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bOverloading

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cPolymorphism

✓


dOverriding

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View Answer Polymorphism

Which among the following is the language which supports classes but not polymorphism?


aSmallTalk

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b Java

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cC++

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dAda

✓


View Answer Ada

What do you call the languages that support classes but not polymorphism?


aClass based language

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bProcedure Oriented language

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cObject-based language

✓


dIf classes are supported, polymorphism will always be supported

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View Answer Object-based language

Which among the following best describes polymorphism?


aIt is the ability for a message/data to be processed in more than one form

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bIt is the ability for a message/data to be processed in only 1 form

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cIt is the ability for many messages/data to be processed in one way

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dIt is the ability for undefined message/data to be processed in at least one way

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