You are tasked with designing a security solution for your network. What information should
be gathered before you design the solution?

A.
IP addressing design plans, so that the network can be appropriately segmented to
mitigate potential network threats

B.
a list of the customer requirements

C.
detailed security device specifications

D.
results from pilot network testing

Explanation:
Cisco specific recommendations for designing a security solution for a network include the
two points:
+ Make sure you have a list of the applications running in the environment
+ Have a network audit
And each network application has some requirements for the network in which it works.
Reference:
http://www.ccnpguide.com/design-documentation/