TD认证考试TD通用专业知识单项选择题每日一练(2017.06.10)

A.172.16.53.252
B.172.16.53.191
C.172.16.53.255
D.172.16.53.129
E.172.16.255.255

A.网络层
B.对话层
C.传输层
D.应用层

A.CATT
B.TIA
C.ETSI
D.ITU

A.VLR
B.FA
C.EIR
D.AC

A.OMC-U/NMC
B.OMC-S/OMC-R
C.OMC-T/OMC-U
D.OMC-T/NMC