单项选择题

Whichofthefollowingistrueregardingtheuseofswitchesandhubsfornetworkconnectivity?（）

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

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单项选择题CS－MARSworkswith whichIOSfeaturetoaccomplishanomalydetection？（）

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

单项选择题Howwouldyoucharacterizethesourceandtypeinadenialofserviceattackonarouter？（）

A.Byperfornubgashowipinterfacetoseethetypeandsourceoftheattackbasedupontheaccess-listmatches
B.Byperformingashowinterfacetoseethetransmittedload"txload"andreceiveload"rxload"；ifthe
C.Bysettingupanaccess-listtopermitallICMP，TCP，andUDPtrafficwiththelogorlog-input
D.Byapplyinganaccess-listtoallincomingandoutgoinginterfaces，turningoffroute-cacheonall

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A.UtilizeLayer3switching
B.Utilizesoftwareacceleratedservices
C.Aggregateendusersandsupportafeature-richenvironment
D.Performpacketmanipulationandfilteringatthecorelayer
E.Useredundantpointto-pointLayer2interconnectionswhenwhereisalinkornodefailure.

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A.ApacketisdeliveredtoCiscoWLCandforwardedviamulticasttoallofitsassociatedAPs,andfinally
B.
C.ApacketisdeliveredtoCiscoWLCandforwardedviaunicasttoallofitsassociatedAPs,andfinallyto
D.
E.ApacketisdeliveredtoCiscoWLCandforwardedviamulticasttoallofitsassociatedAPs,discarded
F.
G.ApacketisdeliveredtoCiscoWLCandforwardedviaunicasttoallofitsassociatedAPs,discardedat
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单项选择题出于成本和安全的考虑，家庭路由器应选择以下哪种认证类型?()

A.WPA/WPA2
B.WEP2
C.WPA-PSK/WPA2-PSK
D.WEP