A、 SDH circuit over a SONET network delivering it as an SDH signal B、 SDH circuit over a SONET network delivering it as a SONET signal C、 SONET circuit over an SDH network delivering it as an SDH signal D、 SONET circuit over an SDH network delivering it as a SONET signal

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第7题

[多选题] Which three timing modes are supported on the ONS 15454 shelf? （）(Choose three.)

A、line timing B、loop timing C、internal timing D、through timing E、external timing

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第8题

[单选题] Two MAG4610s are running in an active/passive cluster configuration. The system administrator is planning to apply a service package to the cluster.Which process should the administrator follow?（）

A、Perform the upgrade on the active node of the cluster. When completed, the node reboots and then pushes the service package to the passive node automatically. B、Perform the upgrade on the passive node of the cluster. When completed, the node reboots and then pushes the service package to the active node automatically. C、On the clustering status page, disable the active node. Perform the upgrade on the disabled node. When completed and the node reboots, enable the node on the clustering status page.Repeat the process on the passive node. D、On the clustering status page, disable the passive node. Perform the upgrade on the disabled node. When completed and the node reboots, enable the node on the clustering status page.Repeat the process on the active node.

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第9题

[单选题] Which timing mode is most appropriate for an ONS 15454 that has lost its BITS-1 and optical references?（）

A、line timing B、loop timing C、internal timing D、through timing E、external timing

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