C2180-371 Question #82: Real Exam Question with Answer & Explanation

An online retailer would like to expand the supply chain Web service application by adding new third party suppliers. Some of the key non-functional requirements include: support for vendor interoperability, loose coupling, long running processes, and to coordinate the order fulfillment across multiple suppliers. The application logic needs to be able to adjust the business processes to accommodate the success or failure of downstream suppliers being able to satisfy the request. Which of the following quality of service standards should be used for the Web services?