问题描述：
[单选]
电层子波长/波长1+1保护时必须将下列哪类单板APS通信使能打开，否则告警不能触发保护倒换。In the case of electrical-layer sub-wavelength/wavelength 1+1 protection， APS communication of（）must be enabled; otherwise， protection switching cannot be triggered by alarms．
A．客户侧单板; the client-side board
B．线路侧单板; the line-side board;
C．交叉板; the cross-connect board;
D．时钟单板; the clock board;
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：M920设备业务单板的程序中，哪一部分程序在升级完成之后，要求必须IC复位？ Among the service board programs of M920 equipment， which program requires IC reset after it is upgraded？
下一篇：电层子波长/波长1+1保护时必须将下列哪类单板APS通信使能关闭，否则上报告警过多会降低WASON处理效率。When configuring 1+1 protection for the sub-wavelength/wavelength on the electric layer， the APS communication of（）must be disabled; otherwise， WASON processing efficiency will be reduced due to excessive alarms．
- 我要回答: 网友(216.73.216.22)
- 热门题目: 1.（2019合格考夏）一个DN 2.（2018合格考）可以与细胞 3.（2016会考夏）蔗糖不能透