单项选择题
A.Depends on the number of switches in the spanning tree domain
B.50 seconds
C.15 seconds
D.Until the root directs it to start forwarding
E.20 seconds
F.Depends on the pott speed
多项选择题 WhichofthefollowingcommandscanbeusedtogatherinformationabouttheAS-PATHofaBGProute？（Chooseallthatapply.）（）
单项选择题 Whichofthefollowingisanaccuratedescriptionofthecommandcopystartup-configftp：//kevin：cisco@192.168.1.74？（）
单项选择题 GiventhemulticastIPaddressof224.193.5.10，whatwouldthecorrespondingmulticastMACaddressbe？（）