When the ACT indicator of the SDH board is off, it means that the board has a hardware failure and cannot be used.
Answer(s): B
In the SDH optical synchronous transmission system, which of the following bytes is used to transmit the quality and weight and usage information of the clock source?
The optical amplifier unit compensates for line losses and extends the transmission distance. Connecting multiple optical amplifier units in cascaded mode allows for extended transmission distances without following the system.
Optical module parameter "L-64.2" in the "2" indicates which of the following working windows?
Answer(s): C
In the Windows operating system, the log files of the U2000 program are stored in the () directory of the U2000 installation disk.
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