QUESTION: 9

If no bit error test is performed on a optical channel for 10 minutes, the local end uses the SDH analyzer to connect to the client-side port on the OTU board, the client-side port on the opposite OTU board need to be self-looped by a fiber. In the case of self-loop, a fixed attenuator must be added.

True
False

Answer(s): A

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QUESTION: 10

Which of the following statements about AU pointers are correct?

The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.
AU-PTR indicates the position of the JO byte.
If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.
The value of the AU-PTR pointer is placed in the last 10 bits of the HI and H2 bytes. Therefore, the valid value of the AU-PTR pointer is 0-1023.

Answer(s): D

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