单项选择题
A. Point-to-point
B. Broadcast multicast
C. Nonbroadcast multicast
D. Backbone area 0
E. Virtual Link
单项选择题 A routing table contains static, RIP, and IGRP routes destined to the same network with each route set to its default administrative distance. Which route will be the preferred route?（）
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 the RAM of the router and maintained by way of hello packets and update packets?（）