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单项选择题
A、Serial 0 is up,line protocol is down
B、Serial 0 is down,line protocol is down
C、Serial 0 is down,line protocol is up
D、Serial 0 is administratively down,line protocol is
单项选择题
A、ip address 1.1.1.1 netmask 255.0.0.0
B、ip address 1.1.1.1/24
C、set ip address 1.1.1.1 subnetmask24
D、ip address 1.1.1.1255.255.255.248
单项选择题
A、2,64
B、4,64
C、4,62
D、2,62
E、无法确定
单项选择题
A、202.114.18.255
B、202.114.18.12
C、202.114.18.11
D、202.114.18.8