what is ABR？
what is ABR？
相关考题：
下列关于ATM业务服务质量从高到低的排序,正确的是()。 A.CBR ABR rt-VBR nrt-VBR UBRB.rt-VBR nrt-VBR CBR ABR UBRC.CBR rt-VBR nrt-VBR ABR UBRD.Rt-VBR CBR nrt-VBR UBR ABR
The following output exists on Router R1, a router internal to area 1. What can you d etermine as true from the output of the show ip ospf database summary command?() A. The LSA was created by an ABR due to an area range command.B. The LSA was created by an ASBR due to a summary - address command.C. If cr eated by an area range command, the best metric for a subordinate subnet on that ABR must have been 11.D. None of the other answers is correct.
Refer to the exhibit. What is the effect of the OSPF configuration on router B?() A. All interfaces will be in area 0B. The router will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 1C. The route r will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 2D. The router will be an ABR with s1/0 in area 0, f0/0 in area 1, and f0/1 in area 2
Refer to the exhibit. Based on this command output, what can we conclude about R3?() A. R3 is an ABR.B. R3 is not connec ted to the backbone.C. R3 has four neighbors.D. R3 is the DR for area 2.
关于OSPF路由聚合命令描述正确的是() A.advertise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advertiseB.not-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-advertiseC.abr-summary命令是OSPF区域视图下的命令D.asbr-summary命令是OSPF视图下的命令
图示两个相啮合的齿轮，A、B分别为齿轮O1，O2上的啮合点，则A、B两点的加速度关系是：A. aAr=aBr ,aAn=aBnB. aAr=aBr ,aAn≠aBnC. aAr≠aBr ,aAn=aBnD.aAr≠aBr ,aAn≠aBn
图示两个相啮合的齿轮，A、B分别为齿轮O1，O2上的啮合点，则A、B两点的加速度关系是：A. aAr=aBr ,aAn=aBn B. aAr=aBr ,aAn≠aBnC. aAr≠aBr ,aAn=aBn D.aAr≠aBr ,aAn≠aBn
What bit should be set in the link state PDUs in an IS-IS level-1-2 router to indicate that they are a potentialexit point out of the area ？（）A、ATT（Attached）bitB、IS-Type bitsC、P（Partition）bitD、Down bitE、PN（Pseudonode）biyF、ABR（Area Border Rorter）bit
OSPF协议中，关于ABR聚合说法正确的是（）A、ABR可以聚合Tpe3LSAB、ABR可以聚合非自己产生的Tpe4LSAC、当ABR同事也是NSSA区域的转换路由器，则可以对Tpe7LSA转换的Tpe5LSA进行聚合D、ABR可以聚合所有的Tpe5LSA
OSPF中，以下关于Stub区域的ABR泛洪默认路由的说法正确的是（）。A、Stub区域的ABR使用第三类LSA泛洪默认路由，完全Stub区域的ABR使用第五类LSA泛洪默认路由B、Stub区域的ABR使用第三类LSA泛洪默认路由，完全Stub区域的ABR也使用第三类LSA泛洪默认路由C、Stub区域的ABR使用第五类LSA泛洪默认路由，完全Stub区域的ABR也使用第五类LSA泛洪默认路由D、Stub区域的ABR使用第五类LSA泛洪默认路由，完全Stub区域的ABR使用第三类LSA泛洪默认路由
下列关于ATM 业务服务质量从高到低的排序，正确的是（） A、 CBR ABR rt-VBR nrt-VBR UBRB、 rt-VBR nrt-VBR CBR ABR UBRC、 CBR rt-VBR nrt-VBR ABR UBRD、 Rt-VBR CBR nrt-VBR UBR ABR
在OSPF中，关于ABR和ASBR论述正确的有（）。A、ABR只负责传递区域内的路由，ASBR只负责传递AS外的路由B、ABR同时可以是ASBRC、区域0内可以有ASBRD、NSSA区域内可以有ASBR
OSPF中，以下关于NSSA的ABR泛洪默认路由的说法可能出现的情况正确的是（）。A、NSSA的ABR使用第七类LSA泛洪默认路由B、完全NSSA的ABR同时使用第七类和第三类LSA泛洪默认路由C、NSSA的ABR使用第三类LSA泛洪默认路由，完全NSSA的ABR使用第三类LSA泛洪默认路由D、NSSA的ABR使用第三类LSA泛洪默认路由，完全NSSA的ABR使用第七类LSA泛洪默认路由
在OSPF网络中，Area1有两个ABR连接到骨干区域，以下关于配置Area1路由汇聚的描述正确的是（）。A、路由汇聚命令必须在两个ABR上同时配置，如果只在一个ABR上配置，则明细路由和和汇聚路由都会发布到骨干区域。B、路由汇聚命令必须在两个ABR上同时配置，如果只在一个ABR上配置，则汇聚路由不能被发布到骨干区域。C、路由汇聚命令必须在两个ABR上同时配置，如果只在一个ABR上配置，则可能引起路由环路。D、路由汇聚命令必须在两个ABR上同时配置，如果只在一个ABR上配置，则汇聚路由条目会被发布到Area1中。
A network de sign shows area 1 with three internal routers, area 0 with four internal routers, and area 2 with five internal routers. Additionally, one ABR (ABR1) connects areas 0 and 1, plus a different ABR (ABR2) connects areas 0 and 2. How many Type 1 LSAs would b e listed in ABR2's LSDB?（）A、6B、7C、15D、12E、None of the other answers is correct.
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
单选题What is the statistical reserve？（）ABandwidth that is reserved for SVCs to route over a trunkBBandwidth that is reserved on a trunk so that ABR connections can burstCBandwidth on a trunk that is reserved for control traffic and cannot be used by connectionsDBandwidth that cannot be allocated to connections but can be used to accommodate statistical variations in the traffic
单选题A network de sign shows area 1 with three internal routers, area 0 with four internal routers, and area 2 with five internal routers. Additionally, one ABR (ABR1) connects areas 0 and 1, plus a different ABR (ABR2) connects areas 0 and 2. How many Type 1 LSAs would b e listed in ABR2's LSDB?（）A6B7C15D12ENone of the other answers is correct.
多选题Which of the following are not true OSPF LSA rules？（）AOSPF LSA type 5 triggers an LSA type 7 at an ABR between an NSSA and the backbone areaBOSPF LSA type 1 triggers an LSA type 3 at an ABR.COSPF LSA type 7 triggers an LSA type 5 at an ABR between an NSSA and the backbone areaDOSPF LSA type 3 triggers an LSA type 4 at an ABR.EOSPF LSA type 5 triggers an LSA type 7 at an A5BR but only in N5SAsFOSFP LSA type 2 triggers an LSA type 3 at an ABR
单选题What is the function of the Type 4 LSA?（）AAdvertise cost to the ABR.BSummarize external routes.CAdvertise cost to the ASBR.DReport a broadcast segment's DR
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
单选题ABR的阈值为刚能引出ABR哪一波的反应强度（）AⅠ波BⅢ波CⅡ波DⅣ波EⅤ波