1.What are web services?Web services are open standard XML, SOAP, HTTPetc. based Web applications that interact with other web applications for the purpose of exchanging data. Web Services can convert your existing applications into Web-applications. 2.What are the features of web services?Following are the features of Web service −
3.What the components of a Web Service?The basic web services platform is XML + HTTP. All the standard web services work using the
4.How Does a Web Service Work?A web service enables communication among various applications by using open standards such
as HTML, XML, WSDL, and SOAP. 5.What is the purpose of XML in a web service?A web services takes the help of XML to tag the data, format the data. 6.What is the purpose pf SOAP in a web service?A web service takes the help of SOAP to transfer a message. 7.What is the purpose of WSDL in a web service?A web service takes the help of WSDL to describe the availability of service. 8.What are the benefits of Web Services?Following are the benefits of using web services −
9.What do you mean by Interoperability of Web Services?Web services allow various applications to talk to each other and share data and services among themselves. Other applications can also use the web services. For example, a VB or .NET application can talk to Java web services and vice versa. Web services are used to make the application platform and technology independent. 10.What do you mean by loosely coupled architecture of Web services?A consumer of a web service is not tied to that web service directly. The web service interface can change over time without compromising the client's ability to interact with the service. A tightly coupled system implies that the client and server logic are closely tied to one another, implying that if one interface changes, the other must be updated. Adopting a loosely coupled architecture tends to make software systems more manageable and allows simpler integration between different systems. 11.Do Web services supports Remote Procedure CallsRPCs?Web services allow clients to invoke procedures, functions, and methods on remote objects using
an XML-based protocol. Remote procedures expose input and output parameters that a web
service must support. 12.What are the behavioral characteristics of web services?Web services have the following special behavioral characteristics −
13.What are the benefits of having XML based WEB services?Using XML eliminates any networking, operating system, or platform binding. So Web Services based applications are highly interoperable application at their core level. 14.What is the benefit of a Web services being loosely coupled?The web service interface can change over time without compromising the client's ability to interact with the service. A tightly coupled system implies that the client and server logic are closely tied to one another, implying that if one interface changes, the other must be updated. Adopting a loosely coupled architecture tends to make software systems more manageable and allows simpler integration between different systems. 15.What is Synchronicity?Synchronicity refers to the binding of the client to the execution of the service. In synchronous invocations, the client blocks and waits for the service to complete its operation before continuing. Asynchronous operations allow a client to invoke a service and then execute other functions. 16.What are the core Roles in Web Service architecture?There are three major roles within the web service architecture −
17.What is the purpose of Service Provider in Web Service architecture?This is the provider of the web service. The service provider implements the service and makes it available on the Internet. 18.What is the purpose of Service Requestor in Web Service architecture?This is any consumer of the web service. The requestor utilizes an existing web service by opening a network connection and sending an XML request. 19.What is the purpose of Service Registry in Web Service architecture?This is a logically centralized directory of services. The registry provides a central place where developers can publish new services or find existing ones. It therefore serves as a centralized clearing house for companies and their services. 20.What are the core layers in Web Service Protocol Stack?The Web Service Protocol Stack is still evolving, but currently has four main layers −
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