单项选择题
How long will a port remain in the listening state by default？（）
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
相关考题
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多项选择题
WhichofthefollowingcommandscanbeusedtogatherinformationabouttheAS-PATHofaBGProute？（Chooseallthatapply.）（）
A.show ip bgp neighbors
B.debug ip bgp updates
C.show ip route bgp
D.show ip bgp
E.show ip bgp summary
F.sh ip bgp database -
单项选择题
Whichofthefollowingisanaccuratedescriptionofthecommandcopystartup-configftp：//kevin：cisco@192.168.1.74？（）
A.The configuration on the FTP server is copied to RAM
B.The command is not valid on a Cisco router
C.The configuration file in RAM is copied to an FTP server
D.The configuration file in NVRAM is copied to an FTP server
E.The configuration on the FTP server is copied to NVRAM
F.The configuration will be copied from NVRAM to an FTP server with a filename of Kevin -
单项选择题
GiventhemulticastIPaddressof224.193.5.10，whatwouldthecorrespondingmulticastMACaddressbe？（）
A.00-00-0c-c0-05-0a
B.00-00-0c-cl-05-0a
C.01-00-5e-00-00-0c
D.01-00-5e-41-05-0a
E.00-00-0c-01-00-5e
F.01-00-5e-cl-05-0a
