多项选择题
A.The link is using IEEE 802.1Q protocol
B.The link is using IEEE 802.1E protocol
C.Spanning tree is disabled
D.Not enough information to determine
E.The native VLAN information is identical at each end of the link
F.The native VLAN information is different at each end of the link
单项选择题 You’reanetworkadministerandyouissuethecommand（showport3/1）onanEthernetport.Toyoursurpriseyounoticeanon-zeroentryinthe’Giants’column.Whatcouldbethecauseofthis？（）
多项选择题 Inthenetwork，VLANTrunkingProtocol（VTP）isrunningwithadomainnameofR1.VLANs1，2，3，4，5，10，20areactiveonthenetwork.Suddenlythewholenetworkgoesdown.NotrafficisbeingpassedonVLANs2，3，4，5，10，20.However，trafficpassesonVLAN1andindicatesallswitchesareoperational.Rightbeforethenetworkproblemoccurred；aswitchnamedSW13wastakenoutofthelabandaddedtothenetwork.WhatthreeconfigurationissuesonSW13couldbecausingthenetworkoutage？（）
多项选择题 On the basis of the following exhibit， can you tell me why VLAN updates from switch CK-P2S1 arenot applied to switch CK-P1S1？（）