Java and Web service interview questions: - What are the different approaches in making Web service?

An interesting Java interview question asked in most of the interviews while
discussing topic on web services. There are basically two approaches in making
web service: -

1) WSDL first Implemention second: In this case the Web service definition
language XML is made first and using the same the web service bean classes are
generated which implement the necessary functionality

Since WSDL defines Contract this is also known as Contract first


2)Implementation first WSDL second: This approach is used whenever legacy code
is available which needs to be exposed as service. So here implementation is
already available and hence only contract needs to be created using WSDL.

Following is the introductory video on Webservice for the one's who are new to
this topic: -






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29 important .net interview questions on Remoting and Webservices

This section will cover the most asked questions related to Remoting and Webservices during .net interview by the interviewer so have a look on the following and do revise it when ever you go for the .net interview
Normally the .net interviewer starts with....
What is an application domain?
What is .NET Remoting?
Which class does the remote object has to inherit?
What are two different types of remote object creation mode in .NET ?
Describe in detail Basic of SAO architecture of Remoting?
What are the situations you will use singleton architecture in remoting?
What is fundamental of published or precreated objects in Remoting?
What are the ways in which client can create object on server in CAO model?
Are CAO stateful in nature?
To create objects in CAO with ‘new’ keyword and what should be done?
Is it a good design practice to distribute the implementation to Remoting Client?
What are LeaseTime, SponsorshipTime, RenewonCallTime and
LeaseManagerPollTime?
Which config file has all the supported channels/protocol
How can you specify remoting parameters using Config files?
Can Non-Default constructors be used with Single Call SAO?
How can we call methods in remoting asynchronously?
What is Asynchronous One-Way Calls?
What is marshalling and What are different kinds of marshalling?

What is ObjRef object in remoting?
What is a Web Service?
What is UDDI?
What is DISCO?
What is WSDL?
What the different phase/steps of acquiring a proxy object in Web
service?
What the different phase/steps of acquiring a proxy object in Web
service?
What is file extension of Web services?
Which attribute is used in order that the method can be used as
WebService?
What are the steps to create a web service and consume it?
Do webservice have state?

So friends answering to above question on Remoting and Webservices of .net interview questions helped me to clear interview in front of the interviewer.