Refer to the exhibit.

The customer would like to prevent a “black-holing” situation when using PBR when SH11 goes down. The
Steelhead appliances are directly connected to the routers. What options are available to determine state level
status of the Steelhead appliance? (Select 3)

A.
CDP

B.
NBAR

C.
Interface Tracking

D.
HTTP

E.
ICMP