单项选择题
A.a list of applications currently in use in the network
B.IP addressing design plans so that the network can be appropriately segmented to mitigate potential network threats
C.detailed security device specifications
D.results from pilot network testing
单项选择题 You are tasked with designing a security solution for your network. What information should be gathered prior to designing the solution？（）
单项选择题 You are tasked with designing a security solution for your network. What information should be gathered prior to designing the solution？（）
单项选择题 Cat6500（config）# router ospf 1 Cat6500（config-router）# network 0.0.0.0 255.255.255.255 area 0 Cat6500（config-router）# nsf Cat6500（config-router）#end Refer to the exhibit. The configuration is used to enable nonstop forwarding for OSPF on a Catalyst 6500 Series Switch with redundant supervisor engines. The default CEF configuration is unchanged. After testing， user traffic is interrupted and NSF is not operational. What is the most likely reason？ （）