which required option, could be downloaded from Cisco.com? seenagape 10 years ago While using 5.x signatures to enable Cisco IOS IPS, which required option, could be downloadedfrom Cisco.com? A. Built-in signatures B. public key C. SDF files (128MB.sdf, 256MB.sdf, attack.drop.sdf) D. Signature Micro-Engines and IME ← Previous question Next question →