what is the routing family which the router has to build map for the routing domain？
1850 TSS-5C设备中，共有几路电源输入？（） ["1","2","3","4"]
what is the difference between the HSRP and VRRP？
when you use LSA type 4 in OSPF environment？
现代奥运会借用和发展了古代的某些仪式如：（） ["开幕式","运动员入场式","点燃圣火","交接会旗"]
hy you use Spanning-tree？ Difference between PVST & MST.
