Which protocol will use a LUN as a way to differentiate the individual disk drives that comprise a targetdevice？（）

单项选择题Forthefollowingstatements，whichoneisthestrongestsymmetricalencryptionalgorithm？（）

A.AES
B.3DES
C.DES
D.Diffie-Hellman

单项选择题Which item is the correct matching relationships associated with IKE Phase？（）

A.IKE Phase 1 - P4S1 and P4S4，IKE Phase 2 - P4S2， P4S3 and P4S5
B.IKE Phase 1 - P4S2 and P4S4，IKE Phase 2 - P4S1， P4S3 and P4S5
C.IKE Phase 1 - P4S2 and P4S3，IKE Phase 2 - P4S1， P4S4 and P4S5
D.IKE Phase 1 - P4S1 and P4S2，IKE Phase 2 - P4S3， P4S4 and P4S5

单项选择题Forthefollowingattempts，whichoneistoensurethatnooneemployeebecomesapervasivesecuritythreat，thatdatacanberecoveredfrombackups，andthatinformationsystemchangesdonotcompromiseasystem’ssecurity？（）

A.Strategic security planning
B.Disaster recovery
C.Implementation security
D.Operations security

单项选择题WhichoneofthefollowingcommandscanbeusedtoenableAAAauthenticationtodetermineifausercanaccesstheprivilegecommandlevel？（）

A.aaa authentication enable method default
B.aaa authentication enable default
C.aaa authentication enable level
D.aaa authentication enable default local

单项选择题WhichtypeoffirewallisneededtoopenappropriateUDPportsrequiredforRTPstreams？（）

A.Stateful firewall
B.Proxy firewall
C.Packet filtering firewall
D.Stateless firewall