Which of the following statements about ESD protection measures is false?

• A.All personnel entering the computer room should wear anti-static shoes, anti-static clothing, etc.
• B.Static sources such as non-anti-static plastic bags, non-anti-static bubble films, and rubber should be kept away from ESD sensitive devices and sensitive boards, at least 30cm away.
• C.Use anti-static tools, such as: anti-static wrists, anti-static tweezers, pullers, etc.
• D.All conductors in the computer room must be grounded reliably, including computer terminals and other equipment, and an anti-static workbench must be set up
• E.Controlling humidity has little effect on reducing static electricity

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Which of the following descriptions is correct?

• A.SAToP supports time division suppression
• B.One STM-1 channel contains 64 VC12 time slots
• C.SAToP encapsulation type processes the CES service by encapsulating the 32 time slots in the E1 frame as a whole and then transparently transmitting it to the opposite end
• D.OptiX PTN supports encapsulating E1 frames of different connections into one PW

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After the optical cable is cut, the optical power is normal and there is no ETH_LOS alarm, but the TUNNEL_LOCV alarm is not cleared. What is the most likely cause?

• A.The optical cable fusion sequence is wrong
• B.Equipment failure
• C.Different steps to alert
• D.The fiber optic cable is blocked

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When congestion occurs, what are the packet discarding methods supported by OptiX PTN 1900&3900?

• A.CAR
• B.RED
• C.WRED
• D.Tail Dro

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Which of the following combinations of dynamic optical add/drop multiplexing boards does not hold?

• A.WSD9+RMU9
• B.RDU9+WSM9
• C.WSD9+WSM9
• D.RDU9+RMU9

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