多项选择题
A.239.0.0.1 B.220.0.0.1 C.237.0.0.1 D.236.0.0.1
A.升级及版本备份 B.配置导入及导出 C.日志及其其它文件的读写 D.业务配置
A.IEEE802.3ah B.IEEE802.3av C.IEEE802.3b D.IEEE802.3bh
A.EC4B B.GC4B C.EC8B D.GC8B
A.GSCA B.HD32A C.IUPA D.HG1A
A.HSWA B.GSCA C.XG8A D.XACA
A.HSWD B.HU4B C.HG1A D.XG8A
A.距离 B.障碍物 C.同频干扰 D.异频干扰
A.10M B.100M C.1000M D.10000M