A.For PE3 emulation of Ethernet services, PW control words can be manually configured on the PE.

B.The internal data services carried by PWE3 are visible to the core network.

C.PRE3 technology provides ATM, Ethernet, and TDM services with end-to-end virtual link emulation at the PS network boundary.

D.PWE3 technology belongs to the second layer VLL solution

A.Field maintenance personnel cannot understand the current operating condition of the equipment.

B.In the case of complex networking, service, and fault information, many alarms and performance events may occur along with the occurrence of faults. Due to too many reports and performance events, maintenance personnel are unable to analyze.

C.When some faults occur, there may be no obvious alarms or performance events reported, and sometimes no alarms or performance events are found.

D.The network administrator cannot obtain the current notifications of the device, the alarm occurrence time, and the historical alarm of the device.

A.Side mode suppression ratio

B.-20dB spectral width test

C.Receive sensitivity

D.Center wavelength test

A.OCh

B.OTS

C.OMS

D.Client

A.-19dBm

B.-9dBm

C.19dBm

D.9dBm