单项选择题

在Catalyst 3548上建立ID号为120,名为phy120的VLAN,并删除ID号为100,名为phy100的VLAN,正确的配置命令是( )。

A.Switch-3548#vlan data Switch-3548(vlan)#vlan name phy120 120 Switch-3548(vlan)#no vlan phy100 Switch-3548(vlan)#exit Switch-3548#
B.Switch-3548#vlan data Switch-3548(vlan)#vlan 120 name phy120 Switch-3548(vlan)#clear vlan 100 Switch-3548(vlan)#exit Switch-3548#
C.Switch-3548#vlan data Switch-3548(vlan)#set vlan 120 name phy120 Switch-3548(vlan)#delete vlan 100 Switch-3548(vlan)#exit Switch-3548#
D.Switch-3548#vlan data Switch-3548(vlan)#vlan 120 name phy120 Switch-3548(vlan)#no vlan 100 Switch-3548(vlan)#exit Switch-3548#
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单项选择题

在Cisco路由器的g0/1端口上禁止源地址为某些特定地址段的数据包进/出路由器,下列access-list的正确配置是( )。

A.Router(config)#access-list 70 deny 10.0.0.0 255.0.0.0 Router(config)#access-list 70 deny 192.168.0.0 255.255.0.0 Router(config)#access-list 70 deny 127.0.0.0 255.0.0.0 Router(config)#access-list 70 deny 172.16.0.0 255.240.0.0 Router(config)#access-list 70 permit any Router(config)#interface g0/1 Router(config-if)#ip access-group 70 in Router(config-if)#ip access-group 70 out Router(config-if)#exit Router(config)#
B.Router(config)#access-list 99 deny 10.0.0.0 0.255.255.255 Router(config)#access-list 99 deny 192.168.0.0 0.0.255.255 Router(config)#access-list 99 deny 127.0.0.0 0.255.255.255 Router(config)#access-list 99 deny 172.16.0.0 0.15.255.255 Router(config)#access-list 99 permit any Router(config)#interface g0/1 Router(config-if)#ip access-group 99 in Router(config-if)#ip access-group 99 out Router(config-if)#exit Router(config)#
C.Router(config)#interface g0/1 Router(config-if)#ip access-group 30 in Router(config-if)#ip access-group 30 out Router(config-if)#exit Router(config)#access-list 30 deny 10.0.0.0 0.255.255.255 Router(config)#access-list 30 deny 192.168.0.0 0.0.255.255 Router(config)#access-list 30 deny 127.0.0.0 0.255.255.255 Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255 Router(config)#access-list 30 permit any
D.Router(config)#access-list 60 deny 10.0.0.0 0.255.255.255 Router(config)#access-list 60 deny 192.168.0.0 0.0.255.255 Router(config)#access-list 60 deny 127.0.0.0 0.255.255.255 Router(config)#access-list 60 deny 172.16.0.0 0.15.255.255 Router(config)#access-list 60 permit any Router(config)#interface g0/1 Router(config-if)#ip access-group 160 in Router(config-if)#ip access-group 160 out Router(config-if)#exit Router(config)#
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