Suppose that Dell's headquarters are in Austin, Texas and it has five producing plants and two customer service centers scattered in different locations across United States. All these business units require to coordinate their activities to effectively sell and distribute Dell products to customers, and support them following sales. Also suppose that Dell has a special relationship with Intel, its chip provider headquartered in Phoenix, with which it wishes to exchange order transactions and other information privately and securely. Information exchange must only take place between choose few Dell headquarters personnelin Austin and Intel employeesin Phoenix. Explain the data communications and network infrastructure which Dell must put to manage its internal communications and external communications with Intel.