相对于OSPF的stub area, OSPF的totally stubby area有何不同（）

A . Stub属性必须在此Stub区域的所有路由器上配置才能生效 B . Stub属性只需在此Stub区域的ABR上配置即可 C . 完全Stub属性必须在此Stub区域的所有路由器上配置才能生效 D . 完全Stub属性只需在此Stub区域的ABR上配置即可

A .  LSA type 1 B .  LSA type 2 C .  LSA type 3 D .  LSA type 5 E .  LSA type 7

A . 正确 B . 错误

A . Router(config)#router ospf 1 B . Router(config)#router ospf 0 C . Router(config)#router ospf area 0 D . Router(config-router)#network 192.168.16.0 0.0.0.255 area 0 E . Router(config-router)#network 192.168.16.0 0.0.0.255 0 F . Router(config-router)#network 192.168.16.0 255.255.255.0 area 0

A . Router（config）#router ospf 1 B . Router（config）#router ospf 0 C . Router（config）#router ospf area 0 D . Router（config-router）#network 192.168.16.0 0.0.0.255 area 0 E . Router（config-router）#network 192.168.16.0 0.0.0.255 0 F . Router（config-router）#network 192.168.16.0 255.255.255.0 area 0

A . Tpe3 B . Tpe4 C . Tpe5 D . Tpe7

A . AS-EXTERNAL-LSA允许被发布到STUB区域内 B . 到AS外部的路由只能基于由ABR手工生成的一条默认路由 C . 虚链接不能跨越末节区域 D . 任何区域都可以成为末节区域

A . The area cannot be a backbone area. B . Inter area routes are suppressed. C . The area has no more than 10 routers. D . No virtual links are allowed. E . No autonomous system border routers are allowed. F . Redistribution is not allowed unless the packet is changed to a type 7 packet.

A .  No virtual links are allowed. B .  The area cannot be a backbone area. C .  Redistribution is not allowed unless the packet is changed to a type 7 packet. D .  The area has no more than 10 routers. E .  No autonomous system border routers are allowed. F .  Interarea routes are suppressed.

A . 骨干区域不能配置成Stub区域 B . 虚连接不能穿过Stub区域 C . Stub区域内所有的路由器都必须配置该属性 D . 自治系统外部路由不可以在Stub区域内传播

A . On the ABR router ospf 10 area 3 stub B . On all Area 3 routers router ospf 10 area 3 stub C . On all Area 3 routers router ospf 10 area 3 stub no - summary D . On the ABR router ospf 10 area 3 nssa E . On the ABR rou ter ospf 10 area 3 stub no - summary

A . less frequent SPF calculations B . fewer hello packets C . smaller routing tables D . reduced LSU overhe ad E . fewer adjacencies needed

A . 任何一个区域都可以配置成Stub区域 B . 骨干区域不可以配置成Stub区域 C . 只有那些只有一个ABR的非骨干区域才可以配置成Stub区域 D . 将某个虚连接的Transit区域配置成Stub区域会导致工作不正常

A . Router(config)#router ospf 1 B . Router(config)#router ospf 0 C . Router(config)#router ospf area 0 D . Router(config-router)#network 192.168.16.0 0.0.0.255 area 0 E . Router(config-router)#network 192.168.16.0 0.0.0.255 0 F . Router(config-router)#network 192.168.16.0 255.255.255.0 area 0

A . 正确 B . 错误

A .  OSPF stub areas increase the size of the LSDB with the addition of Type 3 and 5 LSAs B .  OSPF not so stubby areas are particularly useful as a simpler form of summarization C .  OSPF stub areas are always insulated from external changes D .  OSPF totally stubby cannot distinguish among ABRs for the best route to destinationsoutsidethe areas E .  OSPF stub areas can distinguish among ASBRs for destinations that are external to the OSPFdomai

A.Back bone router B.Auto nomous system boundary router C.Designated router D.Are aborder router

A．不接受本地 AS 之外的路由信息，也不接受其他区域的路由汇总信息 B．不接受本地 AS 之外的路由信息，对本地 AS 之外的目标采用默认路由 C．可以接收任何链路更新信息和路由汇总信息 D．可以学习其他 AS 的路由信息，对本地 AS 中的其他区域使用默认路由

A.LSA type 1 B.LSA type 2 C.LSA type 3 D.LSA type 5 E.LSA type 7

A．S-external-LSA允许被发布到STUB区域内 B．到AS外部的路由只能基于ABR手工生成的一条默认路由 C．虚连接不能跨越STUB AREA D．任何区域都可以成为STUB区域

<img src='https://img2.soutiyun.com/shangxueba/ask/64290001-64293000/64291910/529008d927b67f31920b5858e5879e0b.png' /> A. area 0 stub o n routers R4 and R5 B. area 5 stub on routers R4 and R5 C. area 5 stub no - summary on routers R4 and R5 D. area 0 stub no - summary on router R4 and area 5 stub no - summary on router R5 E. area 5 stub no - summary on router R4 and area 5 stub on router R5