多项选择题
A. The exchange of advertisement is triggered by a change in the network.
B. All routers exchange routing tables with each other iIn a multipoint network.
C. Packets are routed based upon the shortest path to the destination.
D. Paths are chosen depending on the cost efficiency factor.
E. Every router in an OSPF area is capable of representing the entire network topology.
F. Only the designated router in an OSPF area can represent the entire network topology.
多项选择题 The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?（）
单项选择题 On the assumption that every OSPF router in a particular area is configured with there is no loopback interface set?（）
单项选择题 Under which circumstance, ie network type, would an OSPF router establish a neighbor adjacency, even though the DR/BDR election process was not performed?（）