Whichthreestatementsaboutend－to－enddelayaretrue?()A.End-to-enddelayisthesumofpropagationdelays，processingdelays，serializationdelays，andqueuingdelays.B.Coast-to-coastend-to-enddelayoveranopticallinkisabout20ms.C.Processingdelaydependsonvariousfactors，which
题目
Whichthreestatementsaboutend－to－enddelayaretrue?()
A.End-to-enddelayisthesumofpropagationdelays，processingdelays，serializationdelays，andqueuingdelays.
B.Coast-to-coastend-to-enddelayoveranopticallinkisabout20ms.
C.Processingdelaydependsonvariousfactors，whichincludeCPUspeed，CPUutilization，IPswitchingmode，androuterarchitecture.
D.Propagationandserializationdelaysarerelatedtothemedia.
E.Propagationdelayisthetimeittakestotransmitapacketandismeasuredinbits-per-second（bps）.
F.Serializationdelayisthetimeittakesforaroutertotakethepacketfromaninputinterfaceandputitintotheoutputqueueoftheoutputinterface.