TCP/IP()layerprotocolsprovideservicestotheapplication()runningonacomputer.Theapplicationlayerdoesnotdefinetheapplicationitself,butratheritdefines()thatapplicationsneed--liketheabilitytotransferafileinthecaseofHTTP.Inshort,theapplicationlayerprovidesan(请作答此空)betweensoftwarerunningonacomputerandthenetworkitself.TheTCP/IPapplicationlayerincludesarelativelylargenumberofprotocols,withHTTPbeingonlyoneofthose.TheTCP/IP()layerconsistsoftwomainprotocoloptions--theTransmissionControlProtocol(TCP)andtheUserDatagramProtocol(UDP).
A.iteration B.object C.interface] D.activity正确答案C
