●In 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 (66) routing algorithm that (67) work done on the OSI IS-IS intradomain routing protocol．This routing，as compared to distance-vector routing，requires (68) processing power．The Dijkstra algorithm is used to calculate (69) OSPF routing table updates only take place when necessary， (70) at regular intervals．(66) A．distance-vectorB．link-stateC．flow-basedD．selective flooding(67) A．derived fromB．deviated fromC．was derived fromD．was deviated from(68) A．moreB．lessC．sameD．most(69) A．routesB．roadC．distanceD．cost(70) A．but ratherB．rather tooC．rather thanD．rather that
●In 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 (66) routing algorithm that (67) work done on the OSI IS-IS intradomain routing protocol．This routing，as compared to distance-vector routing，requires (68) processing power．The Dijkstra algorithm is used to calculate (69) OSPF routing table updates only take place when necessary， (70) at regular intervals．
(66) A．distance-vector
B．link-state
C．flow-based
D．selective flooding
(67) A．derived from
B．deviated from
C．was derived from
D．was deviated from
(68) A．more
B．less
C．same
D．most
(69) A．routes
B．road
C．distance
D．cost
(70) A．but rather
B．rather too
C．rather than
D．rather that
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