【单选题】【消耗次数：1】
下列哪种交换方法实时性最好？
①
报文分组交换
②
报文交换
③
线路交换
④
各种方法都一样
参考答案：
复制
纠错
相关题目
【单选题】
下列关于专用线路与交换线路的描述错误的是（ ）。
①
专用线路适用于数据量大的情况
②
专用线路不需要有呼叫建立与拆除过程
③
交换线路适用于数据量大的情况
④
交换线路通过交换网连接
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