This provides difference between WCF and Webservice & difference between Webservice and Remoting

1. 1) What are the differences between WebService and WCF?
S.N Features WebService WCF
o
1 Hosting It can be hosted in IIS It can be hosted in IIS,
windows activation
service, Self-hosting,
Windows service
2 Programmin [WebService] [ServiceContract] attribute
g attribute has to be has to be added to the
added to the class class
3 Model [WebMethod] [OperationContract]
attribute represents attribute represents the
the method exposed method exposed to client
to client
4 Operation One-way, Request- One-Way, Request-
Response are the Response, Duplex are
different different type of
operations operations supported in
supported in web WCF
service
5 XML System.Xml.serializati System.Runtime.Serializati
on name space is on namespace is used for
used for serialization serialization
6 Encoding XML 1.0, XML 1.0, MTOM, Binary,
MTOM(Message Custom
Transmission
Optimization
Mechanism), DIME,
Custom
7 Transports Can be accessed Can be accessed through
through HTTP, TCP, HTTP, TCP, Named pipes,
Custom MSMQ,P2P, Custom
8 Protocols Security Security, Reliable
messaging, Transactions
9 State Web Services are WCF Services can manage
Management stateless states
2) What are the differences between ASP.Net Web services
and .NET Remoting?
S.N Features ASP.Net Web .NET Remoting
o services
1 Protocol It can be accessed only It can be accessed
over HTTP over any protocol
(including TCP, HTTP,
SMTP and so on)
2 State Web services work in a It provides support for
Management stateless environment both stateful and

2. stateless environments
through Singleton and
SingleCall objects
3 Type System Web services support Using binary
only the datatypes communication, .NET
defined in the XSD Remoting can provide
type system, limiting support for rich type
the number of objects system
that can be serialized.
4 Interoperabilit Web services support .NET remoting requires
y interoperability across the client be built
platforms, and are using .NET, enforcing
ideal for homogenous
heterogeneous environment.
environments
5 Reliability Highly reliable due to Can also take
the fact that Web advantage of IIS for
services are always fault isolation. If IIS is
hosted in IIS not used, application
needs to provide
plumbing for ensuring
the reliability of the
application
6 Extensibility Provides extensibility Very extensible by
by allowing us to allowing us to
intercept the SOAP customize the different
messages during the components of the
serialization and .NET remoting
deserialization stages. framework.
7 Ease-of- Easy-to-create and Complex to program.
Programming deploy.
3) What are the differences between Buffered Transfer and
Streamed Transfer in WCF?
S.N Buffered Transfer Streamed Transfer
o
1 Target can process the Target can start processing the
message once it is completely data when it is partially
received. received.
2 Performance will be good Performance will be good when
when message size is small message size is larger(more
than 64K)
3 Native channel shape is Native channels are

3. IDuplexSessionChannel IRequestChannel and
IReplyChannel
4) What are the differences Binary Serialization and XML
Serialization?
S.N Binary Serialization XML Serialization
o
1 It preserves type fidelity , It does not preserve type fidelity
which is useful for preserving and hence state cant be
the state of the object maintained
between transportation and
invocation
2 As it is the open standard its Not that much used compared to
widely used Binary Serialization