Traditionalnetworklayerpacketforwardingreliesontheinformationprovidedbynetworklayer()protocols,orstaticrouting,tomakeanindependent(本题)decisionateachhopwithinthenetwork.Theforwarding()isbasedsolelyonthedestination()IPaddress.Allpacketsforthesamedestinationfollowthesamepathacrossthenetworkifnootherequal-costpathsexist.Wheneverarouterhastwoequal-cost()towardadestination,thepacketstowardthedestinationmighttakeoneorbothofthem,resultinginsomedegreeofloadsharing.
A.switch B.hop C.host D.cunstomer正确答案B
