56. Which one of these statements is true of OSPF type 5 LSAs?
哪一个发送OSPf类型5的LSA
A. They are used to summarize area routes to other areas.
B. They are used in not-so-stubby areas to propagate external routes.
C. They are used to notify areas of the ASBR.
D. They are flooded to all areas except stub areas (external route).
由外部路由器通过末端区域发送到整个区域
Answer: D
57. Which OSPF LSA type does an ASBR use to originate a default route into an area?
在OSPF协议中ASBR在一个区域从外部发送默认路由使用哪种LAS
A. LSA 1 B. LSA 3 C. LSA 4 D. LSA 5 E. LSA 7
Answer: D
58. Refer to the exhibit. Routers A and B are directly connected. Given the configuration, how many EIGRP routes will router B see in its routing table?
如图所示，路由器A和B直接相连，这样配置让路由器B得到多少路由表?
A. 0 B. 1 C. 2 D. 3 E. 4
Answer: A
