Answer / ghanshyamverma

COM Execution is done in its clien Machine where DCOM Run
on selected server

Answer / meghraj

COM is collection of tools which are executed on client
side environment whereas DCOM is a Distributed component
object Model runs at the given server.

Answer / r.murugadoss

component object model is a set of component tools which are
executed on client side environment whereas Distributed
Component Object Model runs at the given server.

Answer / sonu tomar

COM stands for Component object model whereas DCOM stands for Distributed component object model.

Answer / vikas

COM objects require installation on the machine from where
it is being used and DCOM requires installation somewhere on
the same network.

Any COM object may participate in DCOM transactions. DCOM
introduced several improvements/optimizations for
distributed environment, such as MULTI_QI (multiple
QueryInterface()), security contexts etc.

DCOM demonstrated importance of surrogate process (you
cannot run in-proc server on a remote machine. You need a
surrogate process to do that.)

DCOM introduced a load balancing.

The fact is dotnet has not replace the COM/DCOM instead it
has extended the functionality by introducing new featurs to it.

While dot-NET software can utilize COM components, and COM
components can tie into many features of the Dot-NET
environment, the two technologies are internally separate.
In particular, Dot-NET has been designed to work across the
Internet, with firewalls and wide-area networks, whereas
DCOM was designed primarily for use on local-area networks.

Answer / rekha rajasekaran

COM requires object id(oid) and interface (iid) to communicate with other objects.But DCOM requires additional information for unique identity.This is one disadvantage.

Answer / praveen

the difference is that DCOM is distributed but COM is not.
To be more precise, there are three main elements added to COM:

The way for creating a remote object.
The way for accessing a remote object.
The way to ensure secure access to a remote object.

Answer / deepak

com is company and dcom daru company........

Answer / subhash nagare

Com is Com and Dcom is Dcom

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