Open Shortest Path First (OSPF)is a(66)routing algorithm that(67)work done on the OSI IS－I
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(69)algorithm is used to calculate routes. OSPF routing table updates only take place when necessary,(70)at regular intervals.
A．distance-vector
B．link-state
C．flow-based
D．selective flooding
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