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How can we maintain State in Webservices
Do webservice have state ? Webservices as such do not have any mechanism by which they can maintain state. Webservices can access ASP.NET intrinsic objects like Session, application and so on if they inherit from “WebService” base class. <%@ Webservice class="TestWebServiceClass" %> Imports S...
2007-10-23, 5137👍, 0💬

What are the steps to create a webservice and consume it
What are the steps to create a webservice and consume it ? Note :- For this question this book will make a attempt by creating a simple webservice and explaining steps to acheive it. A simple webservice will be created which takes two number and gives addition result of the two number. In CD sample ...
2007-10-23, 4973👍, 0💬

Which attribute is used in order that the method can be used as
Which attribute is used in order that the method can be used as WebService ? WebMethod attribute has to be specified in order that the method and property can be treated as WebService.
2007-10-23, 4548👍, 0💬

What is file extension of Webservices
What is file extension of Webservices ? .ASMX is extension for Webservices. Note :- After this we are going to deal with a sample of webservice. In VS2005 webproject is created from the menu itself as compared to 2003 where it was present in the explorer.
2007-10-23, 4673👍, 0💬

What the different phase/steps of acquiring a proxy object in
What the different phase/steps of acquiring a proxy object in Webservice ? Following are the different steps needed to get a proxy object of a webservice at the client side :- ã Client communicates to UDI node for WebService either through browser or UDDI's public web service. ã UDII responds wit...
2007-10-23, 4985👍, 0💬

What is WSDL
What is WSDL? Web Service Description Language (WSDL)is a W3C specification which defines XML grammar for describing Web Services.XML grammar describes details such as:- ã Where we can find the Web Service (its URI)? ã What are the methods and properties that service supports? ã Data type suppo...
2007-10-23, 4803👍, 0💬

What is DISCO
What is DISCO ? DISCO is the abbreviated form of Discovery. It is basically used to club or group common services together on a server and provides links to the schema documents of the services it describes may require.
2007-10-23, 4747👍, 0💬

What is UDDI
What is UDDI ? Full form of UDDI is Universal Description, Discovery and Integration. It is a directory that can be used to publish and discover public Web Services. If you want to see more details you can visit the http://www.UDDI.org .
2007-10-23, 4688👍, 0💬

What is a Web Service
What is a Web Service ? Web Services are business logic components which provide functionality via the Internet using standard protocols such as HTTP. Web Services uses Simple Object Access Protocol (SOAP) in order to expose the business functionality.SOAP defines a standardized format in XML which ...
2007-10-23, 4547👍, 0💬

What is ObjRef object in remoting
What is ObjRef object in remoting ? All Marshal() methods return ObjRef object.The ObjRef is serializable because it implements the interface ISerializable, and can be marshaled by value. The ObjRef knows about :- ã location of the remote object ã host name ã port number ã object name.
2007-10-23, 4626👍, 0💬

What is marshalling and what are different kinds of marshalling
What is marshalling and what are different kinds of marshalling ? Marshaling is used when an object is converted so that it can be sent across the network or across application domains. Unmarshaling creates an object from the marshaled data. There are two ways to do marshalling :- ã Marshal-by-valu...
2007-10-23, 5327👍, 0💬

What is Asynchronous One-Way Calls
What is Asynchronous One-Way Calls ? One-way calls are a different from asynchronous calls from execution angle that the .NET Framework does not guarantee their execution. In addition, the methods used in this kind of call cannot have return values or out parameters. One-way calls are defined by usi...
2007-10-23, 4641👍, 0💬

How can we call methods in remoting Asynchronously
How can we call methods in remoting Asynchronously All previous examples are a synchronous method calls that means client has to wait until the method completes the process. By using Delegates we can make Asynchronous method calls.
2007-10-23, 4775👍, 0💬

Describe in detail Basic of SAO architecture of Remoting
Describe in detail Basic of SAO architecture of Remoting? For these types of questions interviewer expects small and sweet answers. He is basically looking at what you know about the specific subject. For these type of question this book will provide detail code which is not necessary to be said dur...
2007-10-23, 6698👍, 0💬

How can you specify remoting parameters using Config files
How can you specify remoting parameters using Config files ? Both remoting server and remoting client parameters can be provided through config files. Below is a sample of server config file which provides all remoting parameter values which we where providing through code. <configuration> &a...
2007-10-23, 5214👍, 0💬

Which config file has all the supported channels/protocol
Which config file has all the supported channels/protocol ? Machine.config file has all the supported channels and formatter supported by .NET remoting.Machine.config file can be found at “C:\WINDOWS\Microsoft.NET\Fram ework\vXXXXX\CONFIG”path. Find element in the Machine.config file which has the c...
2007-10-23, 4841👍, 0💬

What are LeaseTime, SponsorshipTime, RenewonCallTime and
What are LeaseTime, SponsorshipTime, RenewonCallTime and LeaseManagerPollTime? This is a very important question from practical implementation point of view. Companies who have specific requirement for Remoting projects will expect this question to be answered. In normal .NET environment objects lif...
2007-10-23, 4868👍, 0💬

Is it a good design practice to distribute the implementation to
Is it a good design practice to distribute the implementation to Remoting Client ? Itfs never advisable to distribute complete implementation at client, due to following reasons:- ã Any one can use ILDASM and decrypt your logic. ã Itfs a bad architecture move to have full implementation as cli...
2007-10-23, 4471👍, 0💬

In CAO model for client objects to be created by “NEW” keyword
In CAO model for client objects to be created by “NEW” keyword what should we do? Remoting Clients and Remoting Server can communicate because they share a common contract by implementing Shared Interface or Base Class (As seen in previous examples). But according to OOP’s concept we can not create...
2007-10-23, 5208👍, 0💬

Are CAO stateful in nature
Are CAO stateful in nature ? Yes. In CAO remoting model client creates a instance on server and instance variable set by client on server can be retrieved again with correct value.
2007-10-23, 5942👍, 0💬

What are the ways in which client can create object on server in CAO
What are the ways in which client can create object on server in CAO model ? There are two ways by which you can create Client objects on remoting server :- ã Activator.CreateInstance(). ã By Keyword gNewh.
2007-10-23, 4725👍, 0💬

What is fundamental of published or precreated objects in Remoting
What is fundamental of published or precreated objects in Remoting ? In scenarios of singleton or single call the objects are created dynamically. But in situations where you want to precreate object and publish it you will use published object scenarios. Dim obj as new objRemote obj.Initvalue = 100...
2007-10-23, 5518👍, 0💬

What are the situations you will use singleton architecture in
What are the situations you will use singleton architecture in remoting ? If all remoting clients have to share the same data singleton architecture will be used.
2007-10-23, 4606👍, 0💬

Describe in detail Basic of SAO architecture of Remoting
Describe in detail Basic of SAO architecture of Remoting? For these types of questions interviewer expects small and sweet answers. He is basically looking at what you know about the specific subject. For these type of question this book will provide detail code which is not necessary to be said dur...
2007-10-23, 4704👍, 0💬

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