单项选择题

TheCompanynetworkneedstopasstrafficbetweenVLANs.Whichdeviceshouldbeusedtoaccomplishthis？（）

A.Hub
B.Switch
C.Router
D.Bridge
E.Noneoftheotheralternativesapply
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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
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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