Which of these is a configurable Cisco IOS feature that triggers notifications if an attack attempts
to exhaust critical router resources and if preventative controls have been bypassed or are not
working correctly?

A.
Control Plane Protection

B.
Management Plane Protection

C.
CPU and memory thresholding

D.
SNMPv3

Explanation:
CPU and Memory Thresholding
One of the ways to monitor whether an attack is occurring on a device is through the simple
monitoring of device resources, including CPU and memory utilization. This is done by configuring
the use of CPU or memory threshold monitoring. Both of these features can be combined with a
remote management server to notify an organization when the CPU and memory conditions on a
device become critical.
With CPU Thresholding Notification, users can configure CPU utilization thresholds, which trigger
a notification when exceeded. Cisco IOS Software supports two CPU utilization thresholds:
http://www.cisco.com/en/US/products/ps6642/products_data_sheet09186a00801f98de.html