单项选择题
A. Point-to-point
B. Broadcast
C. Non-broadcast multi-access
D. Backbone area 0
E. None of the above
单项选择题 What is the maximum number of hops OSPF allows before it deems a network unreachable?（）
多项选择题 In EIGRP, what kind of route information is stored in RAM and maintained by way of hello packets and update packets?（）
多项选择题 Which of the following statements describe the characteristic of link state routing protocols?（）