问答题

Whichthreeofthefollowingnetworkfeaturesaremethodsusedtoachievehighavailability?()

A.SpanningTreeProtocol(STP)
B.Delayreduction
C.HotStandbyRoutingProtocol(HSRP)
D.Dynamicroutingprotocols
E.QualityofService(QoS)
F.Jittermanagement
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