CWDM含有放大器。
CWDM含有放大器。
相关考题：
以下关于CWDM与DWDM的比较,正确的有()。 A.CWDM载波通道间距较宽，复用波长数目较DWDM少。B.DmM采用的是冷却激光，而CWDM调制激光采用非冷却激光。C.CWDM对光纤媒质没有特殊要求，应用范围较广，但传输距离般限于城域网范围，干线部分DWDM仍然有着无法替代的优势。D.城域范围内，DWDM的建设和维护成本较CWDM低得多。
CWDM和DWDM的区别在于() A.CWDM载波通道间距较宽，一根光纤上只能复用2.16个左右波长光信号B.CWDM调制激光采用非冷却激光器，而DWDM采用的是冷却激光器C.CWDM没有使用放大器D.CWDM一般工作在1271.1611nm波段，间隔为20nm，可复用24个信道
CWDM和DWDM的区别在于（）A、CWDM载波通道间距较宽，一根光纤上只能复用2.16个左右波长光信号B、CWDM调制激光采用非冷却激光器，而DWDM采用的是冷却激光器C、CWDM没有使用放大器D、CWDM一般工作在1271.1611nm波段，间隔为20nm，可复用24个信道
下面关于CWDM与DWDM说法中哪个是错误的（）A、CWDM的光纤衰耗平坦度低于DWDMB、CWDM的无电中继传输距离小于DWDMC、CWDM的单波最高传输速率为2.5G，低于DWDMD、CWDM的通道间隔小于DWDM
以下关于CWDM与DWDM的比较，正确的有（）。A、CWDM载波通道间距较宽，复用波长数目较DWDM少。B、DmM采用的是冷却激光，而CWDM调制激光采用非冷却激光。C、CWDM对光纤媒质没有特殊要求，应用范围较广，但传输距离→般限于城域网范围，干线部分DWDM仍然有着无法替代的优势。D、城域范围内，DWDM的建设和维护成本较CWDM低得多。
Two DS8700 systems have been proposed for a disk-to-disk BC solution. Each system has 200 TB installed， with a data change rate of 18% per day. Two 2 Gbps CWDM links are in place between the remote data centers with an average utilization rate of 55%. The proposed solution includes additional CWDM ports. Which of the following should justify the additional CWDM ports（）A、the Disk Magic configuration reportB、an engineer from thetelcom providing the dark fiberC、the bandwidth calculationsD、aCompeteLine analysis
单选题Two DS8700 systems have been proposed for a disk-to-disk BC solution. Each system has 200 TB installed， with a data change rate of 18% per day. Two 2 Gbps CWDM links are in place between the remote data centers with an average utilization rate of 55%. The proposed solution includes additional CWDM ports. Which of the following should justify the additional CWDM ports（）Athe Disk Magic configuration reportBan engineer from thetelcom providing the dark fiberCthe bandwidth calculationsDaCompeteLine analysis
判断题在CWDM系统中一般可以采用光放大器。A对B错