Which of the following statements about the signal label byte C2 is incorrect?

• A.If the C2 byte mismatch is detected, an LP_SLM alarm is reported in the corresponding VC-4 channel.
• B.The C2 byte to be sent must match the C2 byte to be received.
• C.The C2 byte is used to indicate the multiplexing structure of the VC frames and the payload property.
• D.C2=00H indicates that the VC-4 is unequipped.

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Which of the following is the meaning of SFD in the Ethernet frame structure?

• A.Payload
• B.Frame check sequence
• C.Preamble
• D.Start frame delimiter

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Which of the following device domains can be managed by the U2000? (Multiple Choice)

• A.Transport device
• B.Data communication device
• C.Access device
• D.Wireless device

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Which of the following technologies is the main difference between an open DWDM system and an integrated DWDM system?

• A.Multiplexing/Demultiplexing technology
• B.Wavelength conversion technology
• C.Optical amplification technology
• D.Optical supervisory technology

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Which of the following is the default WTR time for MSP switching?

• A.6 minutes
• B.15 minutes
• C.12 minutes
• D.10 minutes

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