What is a critical pressure in legacy data center networks?
A. The legacy two-tier topology cannot scale out to support the large number of servers in a modern data center.
B. Servers need their network connectivity provisioned more quickly than is possible with manual CLI- based processes.
C. Legacy server hardware cannot support the virtual switches and virtual routers that virtualized hosts require.
D. Client-to-server traffic is increasing more quickly than server-to-server traffic, overburdening the network core.