Exhibit:

A customer is interested in using videoconferencing to link offices for regional, district, and area sales meetings. The customer currently uses IP telephony and has an IP WAN linking all the remote offices. The customer is concerned that a large number of videoconferences may use too much bandwidth, impacting the ability of other users to accomplish work on the network. How should MCUs be configured to support this customer and minimize bandwidth consumption?

A.
a single-level conference with a centralized MCU at headquarters and cascaded media processors at each regional location

B.
a two-level conference with a centralized MCU media processor at headquarters and cascaded media processors at each regional location

C.
a single-level conference with a centralized media processor at headquarters and cascaded media processors at each regional location

D.
a two-level conference with an MCU at headquarters and cascaded MCUs at each regional location