When 15 VC-12 services are created on the STM-1 frame in sequence from 1 to 15, and then VC-3 services are created on the second VC-3 of this STM-1 frame, what is the result displayed by the network management system?

When congestion occurs, queuing strategies can be varied. If you need to take service for the messages that arrive first, you can use the () queuing strategy; if you want to ensure that the most urgent and critical services are served first, you can use the () queuing strategy; if you need to balance the delay and delay jitter of each stream, You can choose () queuing strategy; if you want to provide professional bandwidth for a specific business, you can choose () queuing strategy.

After which of the following steps, the rollback operation can no longer be performed

The scope of 1+1 protection in the OTU board is the optical fiber on the OCH path, that is, the optical fiber between the dual transmission of the source OTU single board and the selective receiving of the sink OTU single board. Cannot protect OTU board

When which of the following pointers is adjusted, the information payload area carries the most information payload