常见的陨石有（） 铁陨石。 镍陨石。 玄武质陨石。 球粒陨石。
Which information is carried in the OSPFv3 intra-area Prefix LSA？（） all link-local addresses。 all IPv6 prefix and topology information that OSPFv2 included in Router LSA and Network LSA。 list of options associated with the link to all other routers attached to the link。 all prefix-specific information that OSPFv2 included in Router LSA and Network LSA。
自变量的混淆
宋初四大书
What are two characteristics of the DiffServ model？（） service guarantee。 traffic that is divided into classes。 not scalable to large implementations。 QoS mechanisms that are used without prior signaling。 applications that signal their particular QoS and bandwidth requirement。
在古代，东西方城市的特点分别是：（）
