A.The creation or search of a new path must be possible if its upper service layer path already exists.

B.Create a client service path by using the path method. After the creation, the optical layer OCh path is automatically generated to reduce the secondary teaching of the path creation.

C.If the route to be automatically calculated is different from the planned path, you can set the "constrained node" or "must pass through the node" to perform routing constraints.

D.Select the "Activate" checkbox. After the path is successfully created, it will be delivered to the NE layer. Otherwise, the path configuration text will only be saved on the network management side.

A.FALSE

B.TRUE

A.VPLS

B.EPL

C.VPWS

D.EPLAN

A.OSN 1800V

B.OSN 9800

C.OSN 8800

A.OTUKBDI: OTUk backwards indication alarm. When the signal detected by the SM segment fails, the value of the BDI byte is 1, and the alarm is reported.

B.OTUKAIS: OTUK alarm indication signal, the AIS signal is transmitted downstream, indicating that the upstream detected signal is invalid.

C.OTUk-LOM: Multi-frame alignment signal abnormal alarm, multi-frame positioning processing continues the multi-frame out-of-synchronization (o0M) state for 3ms, generating OTUelom alarm.

D.OTUK-TIM: The OTUK trace identifier is the TTI (Trail Trace Identifier) mismatch. This alarm is generated if the trace identifiers of the peer end and the local end do not match and the TIM detection is enabled during the control process. Compare the API (Access Point Identifiers) in the input signal with the desired API.