A.192.168.0.1

B.10.0.0.1

C.10.255. 0.1

D.172.128.0.1

A.In the case of the 1 + 1 hot backup of the SCC board, replacing the control board does not affect services when the active/standby switchover is performed.

B.After the SCC board is removed, the BD_STATUS and COMMUN_FAIL alarms are reported. After the new board goes online, these alarms need to be manually cleared.

C.If the software version of the new SCC board is earlier than the equipment version, upgrade the software on the SCC board to the same version as the equipment.

D.If the software version of the new SCC board is later than equipment version, clear the database of the SCC board, and then downgrade the software on the SCC board to the same version as the equipment.

A.For the ingress port of the Access attribute, if the input data does not carry the VLAN ID, it is directly transparent.

B.For the ingress port of the Tag Aware attribute, if the input data does not carry the VLAN ID, discard.

C.For the inbound port of the Tag Aware attribute, if the input data carries the VLAN ID, transparently receive the data.

D.For the ingress port for the Access attribute, if the input data carries the VLAN ID, discard.

A.Only the gateway network element needs to be connected to the network management computer.

B.If the subrack connection mode is master-slave mode, the network management computer must be connected to the main subrack.

C.All network element IP addresses must be in the same address segment as the network management computer IP address.

D.The connection network management computer can be connected either directly or through a local area network, as the case may be.

A.Discrete service management requires the U2000 license to have path management functions.

B.Perform path search on the U2000 network management. Cross-connections that do not form a path are called discrete services.

C.A service is searched for a discrete service, indicating that the service is not working properly on the network element side.

D.For a cross-connection, after the path search, it is either a discrete service or a path with other cross-connections, it is impossible to belong to both high-spread services and other cross-connections to form a path.