RegisterWellknownServiceType():
Method used to define and configure a remotable Object that 
needs to be Activated on server side. This takes 3 
parameter as follows:-
RegisterWellKnownServiceType( typeof( <Class/Object 
Name> ), <"SomeURI">, 
WellKnownObjectMode.Singleton/SingleCall );

RegisterWellknownClientType():
This method has to be used on the client module to 
comunicate with serve-side activated remote object. Ex:
RegisterWellKnownClientType( typeof( <Class/Object Name> ), 
<"Server Remotable Object URL"> );


RegisterActivatedServiceType():
RegisterActivatedClientType():
Similarly, the above two methods are used to define 
remotable object type as client activated.