交换机用（ ）方式知道将帧转发到哪个端口。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='29470' and id < 2398771 and id<>'2398771' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29470' and id > 2398771 and id<>'2398771' order by id asc limit 5