单项选择题

OnaCompanyswitchnamedR1youconfigurethefollowing：iparpinspectionvlan10－12，15WhatisthepurposeofthisglobalconfigurationcommandmadeonR1？（）

A.DiscardsARPpacketswithinvalidIP-to-MACaddressbindingsontrustedports
B.ValidatesoutgoingARPrequestsforinterfacesconfiguredonVLAN10，11，12，or15
C.Intercepts，logs，anddiscardsARPpacketswithinvalidIP-to-MACaddressbindings
D.InterceptsallARPrequestsandresponsesontrustedports
E.Noneoftheotheralternativesapply
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单项选择题
YouareresponsibleforincreasingthesecuritywithintheCompanyLAN.Ofthefollowingchoiceslistedbelow，whichistrueregardinglayer2securityandmitigationtechniques？（）
A.EnablerootguardtomitigateARPaddressspoofingattacks.
B.ConfigureDHCPspoofingtomitigateARPaddressspoofingattacks.
C.ConfigurePVLANstomitigateMACaddressfloodingattacks.
D.EnablerootguardtomitigateDHCPspoofingattacks.
E.ConfiguredynamicAPRinspection（DAI）tomitigateIPaddressspoofingonDHCPuntrustedports.
F.ConfigureportsecuritytomitigateMACaddressflooding
G.Noneoftheotheralternativesapply
单项选择题
YouworkasanetworktechnicianatCompany.Yourboss,Mrs.,isinterestedinswitchspoofing.SheasksyouhowanattackerwouldcollectinformationwithVLANhopingthroughswitchspoofing.Youshouldtellherthattheattackingstation...（）A....usesVTPtocollectVLANinformationthatissentoutandthentagsitselfwiththedomaininformationinordertocapturethedata.B....willgenerateframeswithtwo802.1QheaderstocausetheswitchtoforwardtheframestoaVLANthatwouldbeinaccessibletotheattackerthroughlegitimatemeans.C....usesDTPtonegotiatetrunkingwithaswitchportandcapturesalltrafficthatisallowedonthetrunk.D....tagsitselfwithallusableVLANstocapturedatathatispassedthroughtheswitch，regardlessoftheVLANtowhichthedatabelongs.E.Noneoftheotheralternativesapply
A.Yourboss,Mrs.,isinterestedinswitchspoofing.SheasksyouhowanattackerwouldcollectinformationwithVLANhopingthroughswitchspoofing.Youshouldtellherthattheattackingstation...（）
A....usesVTPtocollectVLANinformationthatissentoutandthentagsitselfwiththedomaininformationinordertocapturethedata.
B....willgenerateframeswithtwo802.1QheaderstocausetheswitchtoforwardtheframestoaVLANthatwouldbeinaccessibletotheattackerthroughlegitimatemeans.
C....usesDTPtonegotiatetrunkingwithaswitchportandcapturesalltrafficthatisallowedonthetrunk.
D....tagsitselfwithallusableVLANstocapturedatathatispassedthroughtheswitch，regardlessoftheVLANtowhichthedatabelongs.
E.Noneoftheotheralternativesapply
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