Inmultipointnetworks,therearetreepersistencemethodswhenastationf
2023-11-03(初级)网络管理员
Inmultipointnetworks,therearetreepersistencemethodswhenastationfindsachannelbusy.inthe1-persistentmethod,afterthestationfindsthelineidle,itsendsitsframeimmediately.thismethodhasthe()chanceofcollisionbecausetwoormorestationsmayfindtheline()andsendtheirframesimmediately.Inthenonpersistentmethod,astationthathasaframetosend()theline.Ifthelineisidle,itsendsimmediatelyIfthelineisnotidle,itwaitsa()amountoftimeandthensensesthelineagain.Thenonpersistentapproach(请作答此空)thechanceofcollisionbecauseitisunlikelythattwoormorestationswillwaitthesameamountoftimeandretrytosendsimultaneouslyThep-persistentapproachcombinestheadvantagesoftheothertwostrategies.Itreducesthechanceofcollisionandimprovesefficiency.
A.increases
B.equalizes
C.reduces
D.cancels
正确答案是C
