选三个,答案解释有四个是正确的,哪三个是正确的?谢谢。
QUESTION 94
What are three characteristics of the OSPF routing protocol? (Choose three.)
A. It converges quickly.
B. OSPF is a classful routing protocol.
C. It uses cost to determine the best route.
D. It uses the DUAL algorithm to determine the best route.
E. OSPF routers send the complete routing table to all directly attached routers.
F. OSPF routers discover neighbors before exchanging routing information.
Answer: ACF
Section: Chapter 6: IP Routing
Explanation/Reference:
考查OSPF特性
A:收敛快,正确
B:有类路由,正确
C:使用cost值确定最优路由,正确
D:使用dual算法,错误,这个是EIGRP的算法
E:发送全部路由信息,错误,增量更新。
F:在交换信息之前先建立邻接关系,正确。