Reasons which is impossible for OTN equipment and network elements to be disconnected frequently?

Reasons which is impossible for OTN equipment and network elements to be disconnected frequently?
A . When using optical monitoring, the DCC mode setting is wrong
B. Using electrical monitoring, the line quality is not good
C. NE ID conflict
D. Users of the same network element log in to the network element at the same time

View Answer

Answer: A