单项选择题
A. ipv6 address PREFIX_1::1/64
B. ipv6 autoconfig 2001:db8:2222:7272::72/64
C. ipv6 autoconfig
D. ipv6 address 2001:db8:2222:7272::72/64
单项选择题 Why will a switch never learn a broadcast address?（）
单项选择题 Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?（）
单项选择题 VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3 commmand interface configuration mode?（）