Your customer has a high priority application housed within a corporate headquarters data center and two regional data centers. The customer cannot afford to provide individual data circuits to each…

Your customer has a high priority application housed within a corporate headquarters data center and two regional data centers. The customer cannot afford to provide individual data circuits to each location. The customer requires an end-to-end CoS architecture that will minimize over-subscription in the access switch. Which three CoS components will meet the customer's requirements? (Choose three.)