Which of the following statements about AU pointers are correct?

• A.If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.
• B.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.
• C.The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.
• D.AU-PTR indicates the position of the JO byte.

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Which of the following is approximately equal to 100mw?

• A.10dBm
• B.20dBm
• C.15dBm
• D.13dBm

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The main light path monitoring is based on the OMS segment and it mainly monitors which of the following items? (Multiple choice)

• A.Line attenuation exceeds the design EOL value.
• B.Line attenuation compensation is abnormal
• C.The main light path is broken?
• D.The origin of the optical discharge power is abnormal

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When the cross-board is configured with 1+1 hot backup, in the case of normal switching, the replacement of the cross-clock board does not affect the packet service.

• A.TRUE
• B.FALSE

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Which of the following statement is correct?

• A.The optical layer path must be deleted first when the electrical layer path is removed.
• B.When the OCh path exists, you can directly create a client path. The NMS automatically creates an ODUk path.
• C.The optical layer path and the electrical layer path are independent. It is not necessary to delete the electrical layer path when deleting the optical layer path.
• D.Deactivation will delete the configuration of the U2000, which has no impact on the device side services.

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