21.What is the purpose of Service Transport layer in Web Service Protocol Stack?

This layer is responsible for transporting messages between applications. Currently, this layer includes Hyper Text Transport Protocol HTTP, Simple Mail Transfer Protocol SMTP, File Transfer Protocol FTP, and newer protocols such as Blocks Extensible Exchange Protocol BEEP.

22.What is the purpose of XML Messaging layer in Web Service Protocol Stack?

This layer is responsible for encoding messages in a common XML format so that messages can be understood at either end. Currently, this layer includes XML-RPC and SOAP.

23.What is the purpose of Service Description layer in Web Service Protocol Stack?

A. This layer is responsible for describing the public interface to a specific web service. Currently, service description is handled via the Web Service Description Language WSDL.

24.What is the purpose of Service Discovery layer in Web Service Protocol Stack?

This layer is responsible for centralizing services into a common registry and providing easy publish/find functionality. Currently, service discovery is handled via Universal Description, Discovery, and Integration UDDI.

25.What HTTP stands for?

HTTP stands for Hyper Text Transfer Protocol.

26.What is HTTP?

Currently, HTTP is the most popular option for service transport. HTTP is simple, stable, and widely deployed. Furthermore, most firewalls allow HTTP traffic. This allows XML-RPC or SOAP messages to masquerade as HTTP messages.

27.What BEEP stands for?

BEEP stands for Blocks Extensible Exchange Protocol.

28.What is BEEP?

This is a promising alternative to HTTP. BEEP is a new Internet Engineering Task Force IETF framework for building new protocols. BEEP is layered directly on TCP and includes a number of built-in features, including an initial handshake protocol, authentication, security, and error handling. Using BEEP, one can create new protocols for a variety of applications, including instant messaging, file transfer, content syndication, and network management.

29.What is XML-RPC?

XML-RPC is a simple protocol that uses XML messages to perform RPCs.

30.How request is sent in XML-RPC?

Requests are encoded in XML and sent via HTTP POST.

31.How response is sent in XML-RPC?

XML responses are embedded in the body of the HTTP response.

32.What are the features of XML-RPC?

Following are the features of XML-RPC −

• XML-RPC is a simple protocol that uses XML messages to perform RPCs.
• Requests are encoded in XML and sent via HTTP POST.
• XML responses are embedded in the body of the HTTP response.
• XML-RPC is platform-independent.
• XML-RPC allows diverse applications to communicate.
• A Java client can speak XML-RPC to a Perl server.
• XML-RPC is the easiest way to get started with web services.

33.What SOAP stands for?

SOAP stands for Simple Access Object Protocol.

34.What is SOAP?

SOAP is an XML-based protocol for exchanging information between computers.

35.What are the features of SOAP?

Following are the features of SOAP −

• SOAP is a communication protocol.
• SOAP is for communication between applications.
• SOAP is a format for sending messages.
• SOAP is designed to communicate via Internet.
• SOAP is platform independent.
• SOAP is language independent.
• SOAP is simple and extensible.
• SOAP allows you to get around firewalls.
• SOAP will be developed as a W3C standard.

36.What WSDL stands for?

WSDL stands for Web Services Description Language.

37.What is WSDL?

WSDL is an XML-based language for describing web services and how to access them.

38.What are the features of WSDL?

Following are the features of WSDL −

• WSDL was developed jointly by Microsoft and IBM.
• WSDL is an XML based protocol for information exchange in decentralized and distributed environments.
• WSDL is the standard format for describing a web service.
• WSDL definition describes how to access a web service and what operations it will perform.
• WSDL is a language for describing how to interface with XML-based services.
• WSDL is an integral part of UDDI, an XML-based worldwide business registry.
• WSDL is the language that UDDI uses.
• WSDL is pronounced as 'wiz-dull' and spelled out as 'W-S-D-L'.

39.What UDDI stands for?

UDDI stands for Universal Description, Discovery, and Integration.

40.What is UDDI?

UDDI is an XML-based standard for describing, publishing, and finding web services.