单项选择题
Which one of the following potential issues is eliminated by using split horizon？（）
A.Joined horizons B.Packet forwarding loops C.cisco Express Forwarding load-balancing inconsistency D.Asymmetric routing throughout the network
单项选择题 Whichswitchporterrorisanindicationofduplexmismatcheson10/100/1000IEEE802.3uGigabitEthernetports？（）
单项选择题 faCiscoswitchisconfiguredwithVTPv1intransparentmode，whatisdonewithreceivedVTPadvertisements？（）
单项选择题 WhichIOSsecurityfeatureisconfiguredbytheipinspectinspection-name{in|out}command？（）
