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什么是通信网络 “通信网络”可以被最确切地描述为这样一系列的设备、机构和进程,通过它们,附着在网上的终端用户设备能够进行有意义的信息交换。一个通信网络要求的典型功能包括: 1.传送电信号(如电压的变化)路径。 2.什么是通信网络 “通信网络”可以被最确切地描述为这样一系列的设备、机构和进程,通过它们,附着在网上的终端用户设备能够进行有意义的信息交换。一个通信网络要求的典型功能包括: 1.传送电信号(如电压的变化)路径。 2.(?)个机构,把码元转变成电信号或者相反的功能。 3.建立帧、数据包(分组)和报文。 4.选择和保持通过网络的路径的技术,以执行上述功能。 网络可以被分为广播网络、交换网络或混合终端网络,个机构,把码元转变成电信号或者相反的功能。 3.建立帧、数据包(分组)和报文。 1.选择和保持通过网络的路径的技术,以执行上述功能。 网络可以被分为广播网络、交换网络或混合终端网络,
What is a Communication Network A “communication network” can be most accurately described as a series of devices, institutions, and processes through which end-user devices attached to the network can make meaningful information exchanges. Typical requirements for a communications network include: 1. Routing of electrical signals (such as voltage changes). 2. What is a communication network? A “communication network” can be most accurately described as a series of devices, institutions and processes through which end-user devices attached to the network can make meaningful information exchanges. Typical requirements for a communications network include: 1. Routing of electrical signals (such as voltage changes). 2. (?) Agencies, the symbols into electrical signals or the opposite function. 3. Create frames, packets (packets) and messages. 4. Select and maintain the path through the network technology to perform the above functions. Networks can be divided into broadcast networks, switched networks or hybrid terminal networks, and agencies that convert symbols into electrical signals or vice versa. 3. Create frames, packets (packets) and messages. 1. Select and maintain the path through the network technology to perform the above functions. The network can be divided into broadcast network, exchange network or mixed terminal network,