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what is DCOM?

Posted By :Ramesh P     Posted Date :October 19, 2010    Points :10   Category :.NET Framework 
DCOM is a distributed extension of COM. It differs from COM in that it allows for creating objects distributed across a network, a protocol for invoking that object's methods, and secure to the object. DCOM provides a wrapper around COM, hence it is a backward compatible extension.

You can also find related Interview Question to what is DCOM?  below: 

What is the relationship between the .NET Framework and DCOM?

  
DCOM is the COM infrastructure for cross-process communication. The .NET Framework supports a number of pluggable channels and formatters for cross-process communication. When making transitions between managed and unmanaged code, the .NET Framework uses the COM infrastructure, specifically, DCOM. All scenarios using COM+ services use managed-to-unmanaged transitions, and thus use DCOM by default. The .NET Framework also supports SOAP, the Simple Object Access Protocol, for cross-process communication where interoperability is critical. (More...)

Advantage over COM/DCOM?

  
1.It does not have extra interface language (IDL)
2.It Works using purely managed code
3.It's using Common Type System.. No Safearrays etc
(More...)

Can you explain what is DCOM ?

  
DCOM differs from COM in that it allows for creating objects distributed across a network, a
protocol for invoking that object's methods, and secures access to the object. DCOM provides a
wrapper around COM, hence it is a backwards compatible extension. DCOM uses Remote
Procedural Calls (RPC) using Open Software Foundation's Distributed Computing Environment. (More...)

How do we create DCOM object in VB6?

  
Using the CreateObject method you can create a DCOM object. You have to put the server
name in the registry. (More...)

How to create DCOM object in VB6?

  
Use the CreateObject method to create a DCOM object. Put the server name in the registry. (More...)

What advantages have Web services over Component Object Model (COM) and Distributed Component Object Model (DCOM)?

  
The advantages of Web services over COM and DCOM are as follows:


Web services are simple to use and can be implemented on varied platforms.
Web services are loosely coupled; as a result, their interfaces and methods can be extended.
Web services do not carry any state information with them so that multiple requests can be processed simultaneously. (More...)

What advantages have Web services over Component Object Model (COM) and Distributed Component Object Model (DCOM)?

  
The advantages of Web services over COM and DCOM are as follows:
1.Web services are simple to use and can be implemented on varied platforms.
2.Web services are loosely coupled; as a result, their interfaces and methods can be extended.
3.Web services do not carry any state information with them so that multiple requests can be processed simultaneously. (More...)

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