OSPF ABR 执行什么功能？A．将类型 2 LSA 泛洪到一个区域中B．将类型 5 LSA 始发到一个区域中C．将类型 3 LSA 注入到一个区域中D．在一个区域内通告任何指定路由器的路由器 ID
OSPF ABR 执行什么功能？
A．将类型 2 LSA 泛洪到一个区域中
B．将类型 5 LSA 始发到一个区域中
C．将类型 3 LSA 注入到一个区域中
D．在一个区域内通告任何指定路由器的路由器 ID
参考答案和解析
类型 2
相关考题：
OSPF路由器之间交换链路状态公告(LSA)信息,以下哪一类型由由ABR产生,由主干区域发送到其他ABR,含有ASBR的链路信息,用来描述OSPF网络的外部路由。 A、LSATYPE1B、LSATYPE2C、LSATYPE3D、LSATYPE4
Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?() A. The router receiving the route translates the Type 7 LSA into a Type 5 LSA.B. The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.C. The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.D. All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.
To make OSPF area 4 totally stubby, the following command was issued on the ABR in router configuration mode: area 4 stub.Which two things need to be done to finish making area 4 a totally stubby area?（）A. Apply the area 4 stub command to all routers in the areaB. On the ABR, use the area 4 stub command with the no - summary keywordC. On the ABR, specify a default cost for the area with the area default - cost commandD. On the ABR, use the default - information originate command to inject a default route into area 4E. Use the auto - cost command on each router in the area to automatically determine the cost to other OSPF areas
Refer to the exhibit. The partial configuration for an OSPF ASBR and an Area 0 ABR is shown. Assume the OSPF configurations throughout the network are operable. Which statement about these configurations is true? （）A. The ASBR route - maps are basically useless, because there are no deny prefix - lists.B. LSA Type 5s wil l not be received by the ABR from the ASBR.C. The OSPF backbone will not learn any RFC 1918 addresses.D. The matched prefix - list addresses will be given a metric of 255, which is essentially unreachable.
Refer to the diagram. Which OSPF configuration command is required to configure Area 3 a s atotally stubby area?() A. On the ABR router ospf 10 area 3 stubB. On all Area 3 routers router ospf 10 area 3 stubC. On all Area 3 routers router ospf 10 area 3 stub no - summaryD. On the ABR router ospf 10 area 3 nssaE. On the ABR rou ter ospf 10 area 3 stub no - summary
查看OSPF区域ABR、ASBR的信息,可以使用() A.Display ospfB.Display ospf errorC.Display ospf interfaceD.Display ospf peer
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关于OSPF的路由聚合，描述正确的是（）。A、ABR上可以聚合OSPF路由B、ASBR上可以聚合OSPF-ASE路由C、OSPF-ASE路由可以在ABR上聚合，但是被聚合的区域必须是NSSA区域D、OSPF路由在任何一台运行OSPF的设备上都可以聚合
Which of the following are not true OSPF LSA rules？（）A、OSPF LSA type 5 triggers an LSA type 7 at an ABR between an NSSA and the backbone areaB、OSPF LSA type 1 triggers an LSA type 3 at an ABR.C、OSPF LSA type 7 triggers an LSA type 5 at an ABR between an NSSA and the backbone areaD、OSPF LSA type 3 triggers an LSA type 4 at an ABR.E、OSPF LSA type 5 triggers an LSA type 7 at an A5BR but only in N5SAsF、OSFP LSA type 2 triggers an LSA type 3 at an ABR
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Area Border Router （ABR） is a router located on the border of one or more OSPF areas that connect those areas to the backbone network. An ABR will inject a default route into which two types of areas？（）A、Area 0B、NSSAC、Totally stubbyD、Stub
Which of the following is true about an OSPF area border router (ABR)?（）A、The ABR must have multiple interfaces connected to the backbone areAB、An ABR is a router with two interfaces, each connected to a different nonbackbone areAC、The only requirement to be considered an ABR is at least one interface connected to the backbone areAD、An ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA
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多选题关于OSPF路由聚合命令描述正确的是（）Aadvertise是abr-summary命令的缺省参数，即配置abr-summary命令不指定not-advertise的话则默认为advertiseBnot-advertise是abr-summary命令的缺省参数，即配置abr-summary命令不指定advertise还是not-advertise的话则默认为not-advertiseCabr-summary命令是OSPF区域视图下的命令Dasbr-summary命令是OSPF视图下的命令
单选题Which of the following is true about an OSPF area border router (ABR)?（）AThe ABR must have multiple interfaces connected to the backbone areABAn ABR is a router with two interfaces, each connected to a different nonbackbone areACThe only requirement to be considered an ABR is at least one interface connected to the backbone areADAn ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA
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单选题关于OSPF的ASBR-Summary-LSA的信息描述，错误的是（）ALinkState表示ASBR的RouterIDBAdvertisingRouter表示该ABR的RouterIDC所有区域的ASBR-Summary-LSA中的AdvertisingRouter字段都相同DMetric表示该ABR到达ASBR的OSPF开销