下面哪些协议支持可变长度子网掩码和路由聚合?()。
A.RIP v1
B.RIP v2
C.OSPF
D.VTP
参考答案:B, C
-Would you mind my coming over and having a look at your new garden?My little son’s
curious about those roses you grow.
- .You’re welcome.
A.Yes,I do
B.Never mind
C.Yes,please
D.Not at all
关于北方地区气候的叙述,正确的是[ ]
A.我国夏季最冷的地区
B.东北是我国冬季最寒冷的地区
C.夏季气温最高、降水多
D.属于温带大陆性气候