单项选择题

YouareresponsibleforincreasingthesecuritywithintheCompanyLAN.Ofthefollowingchoiceslistedbelow，whichistrueregardinglayer2securityandmitigationtechniques？（）

A.EnablerootguardtomitigateARPaddressspoofingattacks.
B.ConfigureDHCPspoofingtomitigateARPaddressspoofingattacks.
C.ConfigurePVLANstomitigateMACaddressfloodingattacks.
D.EnablerootguardtomitigateDHCPspoofingattacks.
E.ConfiguredynamicAPRinspection（DAI）tomitigateIPaddressspoofingonDHCPuntrustedports.
F.ConfigureportsecuritytomitigateMACaddressflooding
G.Noneoftheotheralternativesapply

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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

单项选择题

PostScript是一种将打印指令发送到PostScript设备的（）语言

A.页面描述
B.超文本
C.面向对象
D.汇编