多项选择题

A.Out-of-profile packets are queued.B.It causes TCP ret……

Which three statements are true about policing？（）

A.Out-of-profile packets are queued.
B.It causes TCP retransmits.
C.Marking and remarking are not supported.
D.It does not respond to BECN and foresight messages.
E.It uses a single- and two-bucket mechanism for metering.

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