DCOM COM Interview Question:

What is IUnknown? What methods are provided by IUnknown?

Submitted by: Administrator

IUnknown is a type of COM Interface.

Every COM class implements an interface named IUnKnown.

IUnKnown contains three methods:
1) HRESULT QueryInterface()
2) ULONG AddRef()
3) ULONG Release()
Submitted by: Administrator