网络提供的服务分两种: 面向连接的服务和无连接的服务.
The service provided by the network divides into two kinds: Face-to-connection service and connectionless service.
对于无连接的服务(邮寄), 发送信息的计算机把数据以一定的格式封装在帧中, 把目的地址和源地址加在信息头上, 然后把帧交给网络进行发送. 无连接服务是不可靠的.
As to the connectionless service, the computer which is sending infomation blocks and puts the data into the frame by a certain form seal , and adds the destination address and the source address to the head of information, then gives the frame to the network for sending .The connectionless service is unreliable .
对于面向连接的服务(电话), 发送信息的源计算机必须首先与接收信息的目的计算机建立连接. 这种连接是通过三次握手(three hand shaking)的方式建立起来的. 一旦连接建立起来, 相互连接的计算机就可以进行数据交换. 与无连接服务不同, 面向连接的服务是以连接标识符来表示源地址和目的地址的. 面向连接的服务是可靠的, 当通信过程中出现问题时, 进行通信的计算机可以得到及时通知.
As to the face-to- connection service (telephone), first ,the source computer which is sending infomation must connect with the ...
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网络提供的服务分两种: 面向连接的服务和无连接的服务.
The network provides the service is divided two kinds: Face connectionservice and connectionless service
对于无连接的服务(邮寄), 发送信息的计算机把数据以一定的格式封装在帧中, 把目的地址和源地址加在信息头上, 然后把帧交给网络进行发送. 无连接服务是不可靠的.
(Mails) regarding the connectionless service, transmits theinformation the computer the data by the certain form seal in theframe, adds the destination address and the source address oninformation, then gives the frame the network to carry on thetransmission The connectionless service is unreliable
对于面向连接的服务(电话), 发送信息的源计算机必须首先与接收信息的目的计算机建立连接. 这种连接是通过三次握手(three hand shaking)的方式建立起来的. 一旦连接建立起来, 相互连接的计算机就可以进行数据交换. 与无连接服务不同, 面向连接的服务是以连接标识符来表示源地址和目的地址的. 面向连接的服务是可靠的, 当通信过程中出现问题时, 进行通信的计算机可以得到及时通知.
Regarding faces the connection the service (telephone), transmits theinformation the source computer to have first with the receiveinformation goal computer establishment connection This kind ofconnection is through three time shakes hand (three hand shaking) theway establishes Once connects establishes, mutually connects thecomputer may carry on the data exchange Is different with theconnectionless service, is expresses the source address and thedestination address face the connection service by the connectionidentifier cid Face the connection service is reliable, when in thecourse of communications has the problem, carries on thecorrespondence the computer to be allowed to obtain the prompt notice
Face connection service and connectionless service
(Mails) regarding the connectionless service, transmits theinformation the computer the data by the certain form seal in theframe, adds the destination address and the source address oninformation, then gives the frame the network to carry on thetransmission The connectionless service is unreliable
Regarding faces the connection the service (telephone), transmits theinformation the source computer to have first with the receiveinformation goal computer establishment connection This kind ofconnection is through three time shakes hand (three hand shaking) theway establishes Once connects establishes, mutually connects thecomputer may carry on the data exchange Is different with theconnectionless service, is expresses the source address and thedestination address face the connection service by the connectionidentifier cid Face the connection service is reliable, when in thecourse of communications has the problem, carries on thecorrespondence the computer to be allowed to obtain the prompt notice网络提供的服务分两种: 面向连接的服务和无连接的服务.
The network provides the service is divided two kinds: Face connectionservice and connectionless service
对于无连接的服务(邮寄), 发送信息的计算机把数据以一定的格式封装在帧中, 把目的地址和源地址加在信息头上, 然后把帧交给网络进行发送. 无连接服务是不可靠的.
(Mails) regarding the connectionless service, transmits theinformation the computer the data by the certain form seal in theframe, adds the destination address and the source address oninformation, then gives the frame the network to carry on thetransmission The connectionless service is unreliable
对于面向连接的服务(电话), 发送信息的源计算机必须首先与接收信息的目的计算机建立连接. 这种连接是通过三次握手(three hand shaking)的方式建立起来的. 一旦连接建立起来, 相互连接的计算机就可以进行数据交换. 与无连接服务不同, 面向连接的服务是以连接标识符来表示源地址和目的地址的. 面向连接的服务是可靠的, 当通信过程中出现问题时, 进行通信的计算机可以得到及时通知.
Regarding faces the connection the service (telephone), transmits theinformation the source computer to have first with the receiveinformation goal computer establishment connection This kind ofconnection is through three time shakes hand (three hand shaking) theway establishes Once connects establishes, mutually connects thecomputer may carry on the data exchange Is different with theconnectionless service, is expresses the source address and thedestination address face the connection service by the connectionidentifier cid Face the connection service is reliable, when in thecourse of communications has the problem, carries on thecorrespondence the computer to be allowed to obtain the prompt notice
For connectionless services (mail), send information to the computer data in a certain format in the frame in the package, the destination and source addresses and information head, and then send frames to the network. No connection service is not reliable.
The connection-oriented services (telephone), send information source computer must first receive information and establish a connection to the computer. Such connectivity through three handshake (three hand shaking) approach built. Once connected established, interconnected computers can jin OK data exchange. with no link different services, connection-oriented services are connection identifier to indicate the source address and destination address of. connection-oriented service is reliable, when communication problems arise in the process, the computer can communicate timely notice.
Face connection service and connectionless service
(Mails) regarding the connectionless service, transmits theinformation the computer the data by the certain form seal in theframe, adds the destination address and the source address oninformation, then gives the frame the network to carry on thetransmission The connectionless service is unreliable
Regarding faces the connection the service (telephone), transmits theinformation the source computer to have first with the receiveinformation goal computer establishment connection This kind ofconnection is through three time shakes hand (three hand shaking) theway establishes Once connects establishes, mutually connects thecomputer may carry on the data exchange Is different with theconnectionless service, is expresses the source address and thedestination address face the connection service by the connectionidentifier cid Face the connection service is reliable, when in thecourse of communications has the problem, carries on thecorrespondence the computer to be allowed to obtain the prompt notice
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