A.In any case, the backup machine does not write data to the data copy buffer area

B.Local dual machine, Linux can use Bond mode to connect externally and support floating IP

C.Volume manager and volume duplicator manage physical disks through logical "volumes", so the operating system and U2000 software are located on them

D.Veritas is a highly reliable system composed of volume manager, volume replicator, local cluster software, etc.

A.The overhead of the OTN electrical layer unit is the associated overhead, which is transmitted together with the payload

B.OTN optical layer overhead is non-path-associated overhead, and an independent optical supervisory channel OSC is responsible for transmission.

C.ODUk combines OTU overhead and FEC overhead and maps to a standardized optical channel transmission unit to form OTUk

D.Client signals (such as IP/MPLS, Ethernet, SDH signals) are mapped to ODUk as ODU payload plus ODU overhead

A.MTU value

B.Ethernet VLAN information

C.Docking module type

D.Ethernet working mode

A.The line attenuation deviation of the main and backup channels is within 3dB

B.The configuration of the amplifier board of the main and standby channels can be different

C.The distance between the main and backup channels is within 10KM

D.The dispersion compensation of the main and backup channels can be different

E.OLP single board needs to use high-power single board

A.Business interruption caused by non-hardware reasons on the work processing board

B.The work processing board is offline

C.The business interface of the working interface board is loose

D.The working interface board is offline