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

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单项选择题

Which IPV6 routing protocol uses multicast group FF02::9 to send updates?（）

A. RIPng
B. OSPFv3
C. static
D. IS-IS for IPv6

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?（）

A. 16
B. 2
C. unlimited
D. 4

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Which type of EIGRP route entry describes a feasible successor?（）

A. a primary route,stored in the routing table
B. a backup route,stored in the routing table
C. a backup route,stored in the topology table
D. a primary route,stored in the topology table