Web Services QUESTIONS

Exam NameWeb Services QUESTIONS
DescriptionWeb Services QUESTIONS and Answers exams contains the questions from various competitive exams.These questions are the part of previous year paper.These kind of questions would be helpful in preparing for exams like IAS, PCS, UPSC, NDA, CDS SSC, RRB, PSC, IBPS
Exam TypeMASTER EXAM
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Question: Define Web Service?

Answer:A web service is a kind of software that is accessible on the Internet. It makes use of the XML messaging system and offers an easy to understand, interface for the end users.
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Question: Define web service protocol stack?

Answer:It is basically set of various protocols that can be used to explore and execute web services. The entire stack has four layers i.e. Service Transport, XML Messaging, Service Description and Service Discovery
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Question: Define layers of web service protocol stack?

Answer:The Service Transport layer transfer messages between different applications, such as HTTP, SMTP, FTP, and Blocks Extensible Exchange Protocol (BEEP). The XML Messaging layer encodes messages in XML format so that messages can be understood at each end, such as XML-RPC and SOAP. The Service Description layer describes the user interface to a web service, such as WSDL. The Service Discovery layer centralizes services to a common registry and offer simple publish functionality, such as UDDI.
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Question: Define XML - RPC?

Answer:It is a protocol that makes use of XML messages to do Remote Procedure Calls.
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Question: Define SOAP?

Answer:SOAP (Simple Object Access Protocol) is a way for a program running in one kind of operating system (such as Windows 2000) to communicate with a progam in the same or another kind of an operating system (such as Linux) by using the World Wide Web's Hypertext Transfer Protocol (HTTP)and its Extensible Markup Language (XML) as the mechanisms for information exchange.
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Question: Define WSDL?

Answer:It means Web Services Description Language. It is basically the service description layer in the web service protocol stock. The Service Description layer describes the user interface to a web service.
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Question: What UDDI means?

Answer:UDDI is an XML-based standard for describing, publishing, and finding Web services.

UDDI stands for Universal Description, Discovery and Integration.

UDDI is a specification for a distributed registry of Web services.

UDDI is platform independent, open framework.

UDDI can communicate via SOAP, CORBA, Java RMI Protocol.

UDDI uses WSDL to describe interfaces to web services.

UDDI is seen with SOAP and WSDL as one of the three foundation standards of web services.

UDDI is an open industry initiative enabling businesses to discover each other and define how they interact over the Internet.

UDDI has two parts:

A registry of all a web service's metadata including a pointer to the WSDL description of a service

A set of WSDL port type definitions for manipulating and searching that registry
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Question: Is there any special application required to access web service?

Answer:No, you don’t need to install any special application to access web service. You can access web service from any application that supports XML based object request and response.
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Question: Name the various communication channels in web service?

Answer:Web service is integrated with three protocols such as HTTP/POST, HTTP/GET, and SOAP. It provides three different communication channels to clients. Client can choose any communication method as per requirements.
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