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WhichthreestatementsaboutSTPtimersaretrue?()
A.STPtimersvalues（hello，forwarddelay，maxage）areincludedineachBPDU.
B.AswitchisnotconcernedaboutitslocalconfigurationoftheSTPtimersvalues.ItwillonlyconsiderthevalueoftheSTPtimerscontainedintheBPDUitisreceiving.
C.TosuccessfullyexchangeBPDUsbetweentwoswitches，theirSTPtimersvalue（hello，forwarddelay，maxage）mustbethesame.
D.IfanySTPtimervalue（hello，forwarddelay，maxage）needstobechanged，itshouldatleastbechangedontherootbridgeandbackuprootbridge.
E.Onaswitchednetworkwithasmallnetworkdiameter，theSTPhellotimercanbetunedtoalowervaluetodecreasetheloadontheswitchCPU.
F.TherootbridgepassesthetimerinformationinBPDUstoallroutersintheLayer3configuration.
参考答案
更多 “ WhichthreestatementsaboutSTPtimersaretrue?() A.STPtimersvalues（hello，forwarddelay，maxage）areincludedineachBPDU.B.AswitchisnotconcernedaboutitslocalconfigurationoftheSTPtimersvalues.ItwillonlyconsiderthevalueoftheSTPtimerscontainedintheBPDUitisreceiving.C.TosuccessfullyexchangeBPDUsbetweentwoswitches，theirSTPtimersvalue（hello，forwarddelay，maxage）mustbethesame.D.IfanySTPtimervalue（hello，forwarddelay，maxage）needstobechanged，itshouldatleastbechangedontherootbridgeandbackuprootbridge.E.Onaswitchednetworkwithasmallnetworkdiameter，theSTPhellotimercanbetunedtoalowervaluetodecreasetheloadontheswitchCPU.F.TherootbridgepassesthetimerinformationinBPDUstoallroutersintheLayer3configuration. ” 相关考题
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