V104.1 问题

Chan_KaHei

我想问一下
题库V104.1 Q4
正确答案是 C跟D 吗?

那为什么?????????

谢谢有心人解答!

                               
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Chan_KaHei

The network shown in the exhibit is running the RIPv2 routing protocol. The network has converged, and
the routers in this network are functioning properly. The FastEthernet0/0 interface on R1 goes down. In
which two ways will the routers in this network respond to this change? (Choose two.)

A. All routers will reference their topology database to determine if any backup routes to the 168.1.0
network are known.
B. Routers R2 and R3 mark the route as inaccessible and will not accept any further routing updates from
R1 until their hold-down timers expire.
C. Because of the split-horizon rule, router R2 will be prevented from sending erroneous information to R1
about connectivity to the 192.168.1.0 network.
D. When router R2 learns from R1 that the link to the 192.168.1.0 network has been lost, R2 will respond
by sending a route back to R1 with an infinite metric to the 192.168.1.0 network.
E. R1 will send LSAs to R2 and R3 informing them of this change, and then all routers will send periodic
updates at an increased rate until the network again converges.

fulltimes

是CD
C因为水平分割的原因，R2不会向R1通告192.168.1.0这条路由,因为这是R1通告给R2的
D当R2从R1收到关于192.168.1.0链路down的信息，它会将metric改为16跳的即为不可达的路由信息给R1

kukubird

楼上正解