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单项选择题

Inabrute－forceattack，whatpercentageofthekeyspacemustanattackergenerallysearchthroughuntilheorshefindsthekeythatdecryptsthedata？（）

A.Roughly50percent
B.Roughly66percent
C.com
D.Roughly75percent
E.Roughly10percent
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热门试题

单项选择题Anadministratorissuesthecommandping127.0.0.1fromthecommandlinepromptonaPC.Ifareplyisreceived,whatdoesthisconfirm?（）

A.ThePChasconnectivitywithalocalhost.
B.ThePChasconnectivitywithaLayer3device.
C.ThePChasadefaultgatewaycorrectlyconfigured.
D.ThePChasconnectivityuptoLayer5oftheOSImodel.
E.ThePChastheTCP/IPprotocolstackcorrectlyinstalled.

单项选择题RefertoCiscoIOSZone－BasedPolicyFirewall，wherewilltheinspectionpolicybeapplied？（）

A.tothezone-pair
B.tothezone
C.totheinterface
D.totheglobalservicepolicy

单项选择题Whichexampleisofafunctionintendedforcryptographichashing？（）

A.MD65
B.SHA-135
C.XR12
D.MD5

单项选择题Whichofthefollowingistrueregardingtheuseofswitchesandhubsfornetworkconnectivity?（）

A.Switchestakelesstimetoprocessframesthanhubstake.
B.Switchesdonotforwardbroadcasts.
C.Hubscanfilterframes.
D.Usinghubscanincreasetheamountofbandwidthavailabletohosts.
E.Switchesincreasethenumberofcollisiondomainsinthenetwork.

单项选择题CS－MARSworkswith whichIOSfeaturetoaccomplishanomalydetection？（）

A.IOSIPS
B.Autosecure
C.CSA
D.Netflow
E.IOSNetworkFoundationProtection（NFP）
F.IOSFirewall