多项选择题
A.内置波长反馈方式 Built-in wavelength feedback B.外置波长反馈方式 External wavelength feedback C.自动功率控制反馈方式 Automatic power control feedback D.温度控制反馈方式 Temperature control feedback
he ZXWM M900 system transmits network management inform...
多项选择题he ZXWM M900 system transmits network management information using specified monitoring channel at a rate of().
A.2 Mbit/s B.10 Mbit/s C.100 Mbit/s D.1000 Mbit/s
Select boards allowing optical protection from the foll...
多项选择题Select boards allowing optical protection from the following options. ()
A.OP B.OPCS C.OPMS D.SWE E.OPM F.OMCP
下面那种技术可改善接收机误判率()A.FEC编码B.ERZ调制技术C.DRAD.自适应接收电平调制
单项选择题下面那种技术可改善接收机误判率()
A.FEC编码 B.ERZ调制技术 C.DRA D.自适应接收电平调制