A.When the extended SSM protocol is started, the clock network can be configured in both directions and can be looped.

B.When the SSM protocol is not enabled, the clock network can only be configured as one-way and cannot be looped.

C.Whether to start the SSM protocol has little effect on the clock network.

D.When the standard SSM protocol is started, the clock network can be configured in both directions but cannot be looped.

A.The advantage of ODUflex is that users can flexibly configure the capacity of the container according to the size of the service to achieve the most efficient use of railway bandwidth.

B.ODUflex refers to non-fixed bandwidth ODUk technology

C.ODUflex bandwidth of per TS subslot is 1.25 Gbit/s

D.Services supported by ODUflex range from 1.25 Gbit/s to 10 Gbit/s

A.FALSE

B.TRUE

A.Alarm monitoring

B.Fault management

C.Performance monitoring

D.Fault location

A.1E1M

B.Reverse 1E1M

C.Reverse 2E2M

D.2E2M