[单选] （）是一种可以对域中每个部分对象进行单独管理容器。

Several links have been broken so th at for the next day or two, what was formerly a contiguous area 0 has been broken into two parts. However, both parts of area 0 have working links into area 1 using routers with RID 1.1.1.1 and 2.2.2.2. Which answers list the command on the router with RID 1.1.1.1 to create a virtual link to help solve this temporary problem?（） area 0 virtual - link 2.2.2.2。 area 1 virtual - link 2.2.2.2。 area 0 source - rid 1.1.1.1 dest - rid 2.2.2.2。 virtual - link transit - area 1 RID 2.2.2.2。 旅客人身伤害事故分为哪些等级？ 自变量 创建“无毒社区”活动的标准是达到“四无”。以下不属于“四无”之一的是（）。 无贩毒。 无吸毒。 无制毒。 无卖毒。 Router R1 connects to a Frame Relay cloud using a multipoint subinterface, with ten PVCs associated with the subinterface. What command would make this router not use a DR and require static OSPF neighbor definition?（） ip ospf network broadcast。 ip ospf netw ork non - broadcast。 ip ospf network point - to - multipoint。 ip ospf network point - to - multipoint non - broadcast。 （）是一种可以对域中每个部分对象进行单独管理容器。