Which of the following data structure is non linear type?

Graph Strings Lists Stacks

How many objects can be created from an abstract class?

Zero One Two As many as we want

Which of the following is not the member of class?

Friend function Const function Static function Virtual function

How many times is a do while loop guaranteed to loop?

1 0 Infinitely Variable

The default visibility mode while inheriting is ?

private protected public Depends