Object Oriented Programming MCQs

Page No. 50

If class A inherits class B and class C as “class A: public class B, public class C {// class body ;}; ”, which class constructor will be called first?


aClass A


bClass B


cClass C


dAll together


View Answer Class B

Is it possible to have all the abstract classes as base classes of a derived class from those?


aYes, always


b Yes, only if derived class implements all the methods


cNo, because abstract classes doesn’t have constructors


dNo, never



Which programming language restricts the use of multiple inheritance?


a C++


bPHP


cSmallTalk


dJava


View Answer Java

How many classes should a program contain to implement the multiple inheritance?


aOnly 1


bAt least 1


cAt least 3


dExactly 3


View Answer At least 3

Which problem arises due to multiple inheritance, if hierarchical inheritance is used previously for its base classes?


aDiamond


bCircle


cTriangle


dLoop


View Answer Diamond

Multiple inheritance is ____________________


a When a class is derived from another class


bWhen a class is derived from two or more classes


cWhen a class is derived from other two derived classes


dWhen a class is derived from exactly one class



All the derived classes can access only a few members of base class that other derived classes can’t access at same time, in hierarchical inheritance.


a True


bFalse


cA & B


d None of the above


View Answer False

Which class constructor is called first when an object of derived class is created?


aBase class constructor


bDerived class constructor


c Firstly created derived class constructor


dLast created derived class constructor



Which type of inheritance is most suitable for inheriting Same syllabus into different colleges with different streams?


aMultiple


bSingle


cHierarchical


dMultilevel


View Answer Hierarchical

Hierarchical inheritance can be a subset of _________________


aHybrid inheritance


bMultiple inheritance


c Single level inheritance


dMultilevel inheritance


View Answer Hybrid inheritance

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