Object Oriented Programming MCQs

Page No. 8

Using encapsulation data security is ___________


aNot ensured

✖


bEnsured to some extent

✓


cPurely ensured

✖


dVery low

✖



Encapsulation is the way to add functions in a user defined structure.


aTrue

✖


bFalse

✓


cA & B

✖


d None of these

✖


View Answer False

Which among the following can be a concept against encapsulation rules?


aUsing function pointers

✖


bUsing char* string pointer to be passed to non-member function

✖


cUsing object array

✖


dUsing any kind of pointer/array address in passing to another function

✓



Which among the following would destroy the encapsulation mechanism if it was allowed in programming?


aUsing access declaration for private members of base class

✓


bUsing access declaration for public members of base class

✖


cUsing access declaration for local variable of main() function

✖


dUsing access declaration for global variables

✖



Which among the following violates the principle of encapsulation almost always?


aLocal variables

✖


bGlobal variables

✓


cPublic variables

✖


d Array variables

✖


View Answer Global variables

How can Encapsulation be achieved?


aUsing Access Specifiers

✓


bUsing only private members

✖


cUsing inheritance

✖


dUsing Abstraction

✖



Which among the following should be encapsulated?


aThe data which is prone to change is near future

✓


bThe data prone to change in long terms

✖


cThe data which is intended to be changed

✖


dThe data which belongs to some other class

✖



Encapsulation helps in writing ___________ classes in java.


aMutable

✖


b) Abstract

✖


cWrapper

✖


dImmutable

✓


View Answer Immutable

Find which of the following uses encapsulation?


avoid main(){ int a; void fun( int a=10; cout<

✖


bclass student{ int a; public: int b;};

✖


cclass student{int a; public: void disp( ){ cout<

✓


dstruct topper{ char name[10]; public : int marks; }

✖



Which feature can be implemented using encapsulation?


aInheritance

✖


bAbstraction

✓


cPolymorphism

✖


dOverloading

✖


View Answer Abstraction

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