Classification data transmission network and

Network Category:

　　1. Local Area Network (LAN)

　　2. metropolitan area network (MAN)

　　3. Wide Area Network (WAN)

Data transmission classification:

　　A transmission order of data points:

　　　　　　　　1. 2. parallel transmission serial transmission

　　Second synchronized manner to transfer data points:

　　　　　　　　1. synchronous transmission asynchronous transmission 2

　　Three flow and the order of time points of data transmission:

　　　　　　　　2. Half-duplex simplex 3. 1. Full Duplex