多项选择题

Your network is suffering from regular outages. After troubleshooting， you learn that the transmit lead of a fiber uplink was damaged. Which two features can prevent the same issues in the future？（）

A.root guard
B.loop guard
C.BPDU guard
D.UDLD
E.BPDU skew detection

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热门试题

单项选择题

Whileyouaretroubleshootingnetworkperformanceissues，younoticethataswitchisperiodicallyfloodingallunicasttraffic.FurtherinvestigationrevealsthatperiodicallytheswitchisalsohavingspikesinCPUutilization，causingtheMACaddresstabletobeflushedandrelearned.Whatisthemostlikelycauseofthisissue？（）

A.a routing protocol that is flooding updates
B.a flapping port that is generating BPDUs with the TCN bit set
C.STP is not running on the switch
D.a user that is downloading the output of the show-tech command
E.a corrupted switch CAM table

单项选择题

ForarouterconnectedtotwoISPsforredundancy，usingIPSLAandstaticrouting，howwouldyouconfigureuRPFontheuplinkinterface？（）

A.ip verify unicast source reachable-via any
B.ip verify unicast reverse-path
C.ip verify unicast reverse-path loose
D.ip verify unicast reverse-path strict