单项选择题
If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20,what is the maximum number of hosts allowed on this subnet?（）
A. 4094 B. 1024 C. 8190 D. 2046 E. 4096
单项选择题 Which IPV6 routing protocol uses multicast group FF02::9 to send updates?（）
单项选择题 What is the default maximum number of equal-cost paths that can be placed into the routing of a cisco OSPF router?（）
单项选择题 Which type of EIGRP route entry describes a feasible successor?（）
