In a centralized Cisco IPS appliance deployment, it may not be possible to connect an IPS appliance to every switch or segment in the network. So, an IPS appliance can be deployed to inspect traffic on ports that are located on multiple remote network switches. In this case, which two configurations required? (Choose two.)

A.
IPS promiscuous mode operations

B.
in-line IPS operations

C.
RSPAN

D.
SPAN

E.
HSRP

F.
SLB