In the ROADM, which of the following layer of OTN paths do not need to be manually configured, it can be obtained directly by path search? (Multiple Choice)
The length range of the DATA field in the Ethernet frame structure is ().
When many alarms are reported at the same time, the alarm handling priority is as follows: Handle alarms according to the priorities of equipment alarms (such as BUS_ERR, HARD_ERR, and COMM_FAIL), optical-layer LOS, electrical-layer OTUk_LOF, ODUk_SSF, and protection switching.
The transmission plane mainly performs functions such as optical signal transmission, multiplexing, configuration protection switching, and reconnection, and ensures the reliability of the transmitted optical signal. However, the exchange action of this layer is carried out under the influence of the management dry surface and the control plane.
For a 10G OTU board, the receiving end optical module uses PIN module. Which of the following receiving powers is in the normal receiving range of the board?
