No

yes beacuse when server tranfer data that will in searlize 
and any format they used which seralized data in com

COM components are not extensible and needs registration 
while used.

Main disadvantage of using com components is dll hell problem.

These are business objects(Components).

ccw is called com callable wrapper where as rcw is called as 
runtime callable wrapper.

CCW is the Com Callable Wrapper. This will buily a bridge 
between the Com Component and the .Net Component
RCW is the Runtime Callable Wrapper. This will built a 
bridge between .Net Component and Com Component.converts 
the .Net data type to Com Data type

RCW :- we are using COM Component in .Net application 
directly we can't call. That's way we need to create a 
wrapper trough Tlbimp.exe read COM classes and interface in 
assembly metadata.

Com Callable Wrapper 
1)Create Assembly and compile with strong name. 
2)Register Assembly using regasm <assembly name> 
3)Register Assembly in GAC using gacutil /i <assembly name> 
4)Use tlbexp <assemblyname.dll>  to export Assembly as Type
Library for COM. 

Runtime Callable Wrapper 
1)Create Public Key Token file using sn.exe &#150;k
<keyfilename.snk> 
2)Use tlbimp <TypeLibFileName> /keyfile: <keyfilename.snk>
/out: <AssemblyName.dll> 
3)Register Imported Assembly in GAC using gacutil /i
<AssemblyName.dll>

Com Callable Wrapper(ccw) build a bridge 
between the Com Component and the .Net Component
Runtime Callable Wrapper(rcw) will built a 
bridge between .Net Component and Com Component.converts 
the .Net data type to Com Data type

this class nothing but a clone class

Wrapper classes are used to encapsulate values of primitive
types in objects, so that they can be passed around in the
same manner.

com architecture needs registratation & classids where as .net 
architecture does not need registration & classids

no
com dll doesnot conatain metadata and it supports
registration & classids
where as .net dll contains metadata and does not support
registration and classids

In Com no version is maintained but in .net different
version of the component are maintained in GAC.

1) Automatic Transaction
2) Distributed Transactions
3) Object Pooling

1 load balancing
2 queue

ContextUtil is the preferred class to use for obtaining 
COM+ context information.

ContextUtil is used for providing the Context utilization 
for JIT Activation.

by using component services found in Administrative tools.

go to Run and type  'Regsvr32 "\dll name" and press Enter

by creating typelibraries & wrapper classes

A proxy object generated by the common language runtime so 
that existing COM applications can use managed classes, 
including .NET Framework classes, transparently.

To enable the communication between COM and .NET 
components, the .NET Framework generates a COM Callable 
Wrapper (CCW). 

The CCW enables communication between the calling COM code 
and the managed code. It also handles conversion between 
the data types, as well as other messages between the COM 
types and the .NET types.

System.EnterpriseServices

Deployment and maintenance of the application is as 
efficient and painless as possible.

The application is never disrupted or compromised by the 
efforts of malicious or ignorant users.

Users can depend on using the application when needed.