Prior to installing the Cisco IOS IPS version 5.0 signature package on a router for the first time, what must be done?
A.
All signatures must be unretired.
B.
All signatures must be enabled.
C.
Cisco IOS IPS must be applied to an interface.
D.
The Cisco IPS Public Crypto Key must be installed on the router.
E.
The PostOffice parameters must be configured.