An OTN network uses WSMD4 to form a ROADM network element. After the logical fiber is created, the paths that can be directly searched are: (Multiple choice)

• A.OMS
• B.Client
• C.OCh
• D.OTS

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Which of the following description of the AU pointer are correct? (Multiple choice)

• A.Since the value of the AU-PTR pointer is placed in the last 10 bits of the two bytes H1 and H2, the valid value is 0~1023.
• B.The root cause of the AU pointer adjustment is that the clocks between the upstream and downstream stations are not synchronized.
• C.AU-PTR refers to the location of the J0 byte.
• D.If the receiving end detects that the H1H2 byte is all "1", the local end generates an AU-AIS alarm.

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Daily equipment maintenance items, excluding:

• A.Check the room temperature, humidity and cleanliness
• B.Check the fan box and clean the air filter
• C.Check the cabinet and board indicators
• D.Check device sound alarms

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Which of the following versions of the GSCC board support CF cards?

• A.N6GSCC
• B.N1GSCC
• C.N4GSCC
• D.N3GSCC

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Which of the following alarms will trigger the optical line protection switching? (Multiple choice)

• A.R_LOF
• B.POWER DIFF_OVER
• C.R_LOS
• D.MUT_LOS

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