What mechanism is provided by COM for reuse of code ?

The main goal of COM is :

How many fields does a HRESULT consist of ?

Which method would you use to create new GUIDs ?

GUID stands for :

When a GUID identifies an interface, it is known as a :

What are the various types of marshalling ?

IIDs are GUIDs that refer to :

What function can you use to add information about a type library to the system registry ?

Which one is not a disadvantage of MIDL ?

Which interface is to be implemented by a class which is designed especially to manufacture other COM objects ?