What is an important step to take when verifying a newly proposed network security solution？ （）

单项选择题Whatisneededtoverifythatanewlyimplementedsecuritysolutionisperformingasexpected？（）

A.a detailed physical and logical topology
B.a cost analysis of the implemented solution 
C.detailed logs from the AAA and SNMP servers
D.results from audit testing of the implemented solution

单项选择题Whatactionshouldyoubepreparedtotakewhenverifyingasecuritysolution？（）

A.having alternative addressing and VLAN schemes
B.having a rollback plan in case of unwanted or unexpected results
C.running a test script against all possible security threats to insure that the solution will mitigate all potential threats
D.isolating and testing each security domain individually to insure that the security design will meet overall requirements when placed into production as an entire system

多项选择题Whencreatinganetworksecuritysolution，whichtwopiecesofinformationshouldyouhavepreviouslyobtainedtoassistindesigningthesolution？（）

A.a list of existing network applications currently in use on the network
B.network audit results to uncover any potential security holes
C.a planned Layer 2 design solution
D.a proof-of-concept plan
E.device configuration templates

多项选择题Whichtwocomponentsshouldbepartofasecurityimplementationplan？（）

A.detailed list of personnel assigned to each task within the plan
B.a Layer 2 spanning tree design topology
C.rollback guidelines
D.placing all unused access ports in VLAN 1 to proactively manage port security
E.enabling SNMP access to Cisco Discovery Protocol data for logging and forensic analysis

多项选择题Whichtwoareneededcomponentswhendesigningandimplementingasecuritysolution？（）

A.detailed VLAN information
B.an incident response plan
C.results of testing the new network configuration
D.an existing hierarchical network topology
E.a security policy for your organization