根据下面的文字资料回答 71~75 题
n the following essay,each blank has four choices.Choose the most suitable one from the four choices and write down in the answer sheet.
Open Shortest Path First(OSPF)is a( 1 )routing algorithm that( 2 )work done on the OSI IS-IS intradomain routing protocol.This routing,as compared to distance-vector routing,requires( 3 )processing power.The Dijkstra algorithm is used to calculate( 4 )OSPF routing table updates only take place when necessary,( 5 )at regular intervals.
第6题:文中( 1 )处正确的答案是( )。