软件水平考试

【单选题】Open Shortest Path First(OSPF)is a (71) routing algorithm that (72) workdone on the OSI IS-IS intradomain routing protocol．This routing，as compared todistance—vector routing，requires (73) processing power．TheDijkstra algorithm is usedto calculate (74) OSPF routing table updates only take place when necessary， (75) atregular intervals．
A．derivedfrom
B、deviatedfrom
C．was derived fromD．was deviated from
网考网参考答案：C
网考网解析：
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