简答题 You are subneting in the network， out of network address，what’s feature can add one more address？

问答题ExplainRouteAggregationinBGP.

问答题InBGP，wecanuseRouteReflectorandfullmesh.Whyshouldweusethese？

问答题Neitherexternalroutesnorinterarearouteswillinjectintothisarea.Whatistheareatypeandhowcanyouconfigureit？

问答题一个不多于50台主机的网络，合适它的掩码是多少？

问答题whatisadministrativedistance.