Users on the 172．17．22．0 network cannot reach the server located on the 172．31．5．0 network． The network administrator connected

admin2019-04-08 33

问题 Users on the 172．17．22．0 network cannot reach the server located on the 172．31．5．0 network． The network administrator connected to router Coffee via the console port, issued the show ip route command, and was able to ping the server． Based on the output of the show ip route command and the topology shown in the graphic, what is the cause of the failure?

选项 A、The network has not fully converged．
B、IP routing is not enabled．
C、A static route is configured incorrectly．
D、The FastEthernet interface on Coffee is disabled．
E、The neighbor relationship table is not correctly updated．

答案C

解析 172．17．22．0中的用户是无法访问172．31．5．0中的server的，因为路由器Coffee上没有到达这个网段的路由。虽然说路由器Coffee上有一条缺省的静态路由，但是这个缺省路由的出接口却是路由器Coffee上没有的地址。因此无法访问的原因就是这个缺省路由的配置出现了问题。

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