What is correct about traffic policing and traffic shaping?

• A.Traffic policing can be used in the outbound and inbound directions, and traffic shaping can only be used in the outbound direction
• B.Traffic policing can only be used in the outbound direction, and traffic shaping can only be used in the inbound direction
• C.Traffic policing can be used in the outbound and inbound directions, and traffic shaping can only be used in the inbound direction
• D.Traffic policing can only be used in the inbound direction, and traffic shaping can only be used in the outbound direction

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The following is wrong about the position of the dispersion module in the signal flow.

• A.If there is only one OBU board, the DCM is placed after the OBU
• B.If there are two OBU boards, the DCM is placed between the two OBUs
• C.If there is an OAU board, DCM is placed between OAU's TDC/RDC
• D.The OTM station usually pre-fills 20KM DCM before sending OBU

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After the ASON network has experienced many topological changes, the LSP of each business is often not optimal, so it provides optimization functions.
Which of the following options are not features of the optimization function?

• A.Optimization cannot be performed when creating, rerouting, upgrading, restarting, and deleting
• B.Business routing cannot be restricted during the optimization process
• C.Rerouting, upgrading, de-escalation, deletion, etc. cannot be performed while optimizing
• D.Only manual optimization is supported, and optimization cannot change the protection level of the optimized LSP

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Hybrid MSTP devices support cross-domain clock intercommunication, and support the intercommunication of synchronous Ethernet and SDH synchronization.

• A.FALSE
• B.TRUE

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In the acceptance test, the MPI-S reference point of the line power test refers to the output end of the transmitting amplifier.

• A.FALSE
• B.TRUE

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