C2. Answer the following questions regarding WSDL. a) Why is a service description needed for representing Web services? b) What is WSDL?  c) List and describe all the abstract and concrete elements of a WSDL document.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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C2. Answer the following questions regarding WSDL.
a) Why is a service description needed for representing Web services?

b) What is WSDL? 
c) List and describe all the abstract and concrete elements of a WSDL document. 

d) What type of message exchange pattern the following portType element
describes? Give reason.
<!-- portTyepe element describes the abstract interface of a Web service -->
<wsdl:portType name="SubmitPurchaseOrder_PortType">
<wsdl:operation name="SubmitPurchaseOrder">
<wsdl:input name="order"
message="tns:SubmitPurchaseOrder_Message"/>
</wsdl:operation>
</wsdl:portType>

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