Continuing with the example of the Election service, explain why the part of the WSDL is referred to as ‘abstract’. What would need to be added to the service description to make it completely concrete?

What will be an ideal response?

The part defined so far is abstract in the sense that no details have been given i) as to what particular communication or transport protocols are to be used.

ii) as to the location of the server

To make it concrete, WSDL has to specify the protocols in use, for example SOAP with HTTP. This can be done in a WSDL binding element. It also has to specify the address of the server, for example, in a WSDL service element.