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通信网中的(   )是通信网通信的汇点和终点,亦称原始消息和发射信号间的交换。

发布日期:2021-05-18

通信网中的(   )是通信网通信的汇点和终点,亦称原始消息和发射信号间的交换。
A

传输链路

B

交换设备

C

用户终端设备

D

传输媒质

试题解析

通信网

通信网是一种使用交换设备、传输设备,将地理上分散用户终端设备互连起来实现通信和信息交换的系统。通信最基本的形式是在点与点之间建立通信系统,但这不能称为通信网,只有将许多的通信系统(传输系统)通过交换系统按一定拓扑结构组合在一起才能称之为通信。也就是说,有了交换系统才能使某一地区内任意两个终端用户相互接续,才能组成通信网。通信网由用户终端设备,交换设备和传输设备组成。交换设备间的传输设备称为中继线路(简称中继线),用户终端设备至交换设备的传输设备称为用户路线(简称用户线)。

中文名
通信网
包括
中继线、用户线
实质
通信和信息交换的系统
形式
端与端之间建立通信系统

点和

点和(点胡)是麻将游戏中的基础术语之一,又称“吃和(吃胡)”或“食和(食胡)”。也就是胡别家打出的牌

中文名
点和
简介
麻将游戏中的基础术语之一
相关麻将术语
点炮,放炮
别名
吃和、食和
参考
《中国麻将竞技规则》
官方定义
和他人打出的牌

信的

信的,于2018年成立,是信营销旗下一站式销品牌,已经与5000家企业达成合作关系,2019年8月,出席由新浪财经主办的2019第六届未来品牌之路暨CMO特训营活动。

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