Before querying the error and optical power on the network management, you need to perform the () operation. Otherwise, you cannot query the corresponding teaching data.

Before querying the error and optical power on the network management, you need to perform the () operation. Otherwise, you cannot query the corresponding teaching data.
A . Create a logical fiber
B . Configuration data
C . Synchronizing network metadata
D . Turn on NE performance monitoring time.

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Answer: D