difference between Marshal by value and Marshal by ref in .net remoting

MBV:In this Server Creates a exact Copy of the Object and
sends it to the Client.Which can be used by the Client with
in its AppDomain with out making any further calls to the
server.
But this has a drawback,the copy sent to client will be
static and will not reflect the subsequent changes.So its
better not to use MBV when there are constant updates.

MBR:DotNet Framework creates a Proxy on the Client
AppDomain which the client uses for accessing the Objects
on the Server.We need to extend 'MarshalByRefObject' for
this.
But this to has a drawback,it increases the network traffic
as there can ba number of accesses to the Server.

So its depends upon our requirement.Small objects with
frequent accesses,we can go with MBR and huge Objects with
relatively low accesses we can go with MBV.