Traditionalnetworklayerpacketforwardingreliesontheinformationprovidedbynetworklayer(本题)protocols,orstaticrouting,tomakeanindependent()decisionateachhopwithinthenetwork.Theforwarding()isbasedsolelyonthedestination()IPaddress.Allpacketsforthesamedestinationfollowthesamepathacrossthenetworkifnootherequal-costpathsexist.Wheneverarouterhastwoequal-cost()towardadestination,thepacketstowardthedestinationmighttakeoneorbothofthem,resultinginsomedegreeofloadsharing.
A.switching B.singnaling C.routing D.session正确答案C
