Computer network knowledge

Development of computer networks in China
China was officially connected to the Internet in April 20, 1994, and now it has many network names and is a business opportunity, especially for mobile phone users.
The category of computer networks, Wan, home-connected, and rented services are Wan, the technology of people who use it.
Lan means spending money on your own, and buying equipment on your own. Two neighbors are also called wan
If the contact is poor, the network connection will be poor, and packet transfer will be slow.

The rate is the rate at which the host connected to the computer network transmits data bits over the digital channel, also known as data rate or bit rate. Throughput is the amount of data that passes through a certain network within a unit of time,
Latency is like a train. How long does the communication delay take?
The lower the latency, the faster the network speed.
China Telecom said that Mb is a byte.


Channel: From a sender to an receiver.
Bandwidth: the highest data rate that digital channels can transmit in the field of data communication
All channels have one input set a, one output set B, and the relationship between them,

Computer network knowledge