多项选择题

Whichof the following are valid modes of packet switching on most routers？（Choose all thatapply.）（）

A.Cisco Express Fonvarding
B.FIB switching
C.Cache switching
D.Optimized switching
E.Process switching
F.Fast switching

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单项选择题

Which of the following management types can be used to deploy appropriate quality-of-servicesolutions to make the most efficient use of bandwidth？（）

A.Fault management
B.Accounting management
C.Operations management
D.Performance management
E.Security management
F.Configuration management

单项选择题

Which of the following commands provides data plane information required to forward a packet toa specific ip address？（）

A.sh ip route
B.sh ip cef 〈ip_address〉
C.sh adjacency 〈ip_address〉
D.sh ip route 〈ip_addres$〉
E.sh ip adjacency 〈/p_address〉
F.sh ip cef 〈mac_addrQss〉〈ip_address〉

多项选择题

Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）

A.The port must be put into forwarding state manually after root-inconsistent state has beencorrected
B.A Root Guard port receiving superior BPDU goes into a root-inconsistent state
C.A Root Guard port receiving inferior BPDU goes into a root-inconsistent state
D.While the port is in a root-inconsistent state no user data is sent across that port
E.The port returns to a forwarding state if inferior BPDUs stop
F.It should be applied to all switch ports