OSPFisalink-stateroutingprotocol。Itisdesignedtoberuninternaltoasingle(71)system。EachOSPFroutermaintainsanidentical()describingtheautonomoussystem’stopology。Fromthisdatabase，aroutingtableiscalculatedbyconstructingashortest-path()。OSPFrecalculatesroutesquicklyinthefaceoftopologicalchanges，utilizingaminimumofrouting()traffic。OSPFprovidessupportforequal-costmultipath。Anarearoutingcapabilityisprovided，enablinganadditionallevelofroutingprotectionandareductioninroutingprotocol()。
A.autonomous B.network C.computer D.server正确答案A
