Which of the following is not a characteristic of fast switching?()
A.Fast switching reducesa routers CPU utilization, compared to process switching
B.All packets of a flow, except for the first packet, use the information in the fast cache
C.It can be enabled with the interface command ip route-cache
D.Fast switching uses a fast cache maintained in a router’s control plane
E.The fast cache contains information about how traffic from different data flows should beforwarded
F.Even though the fast switching is enabled, the first packet of a flow is still process switched