Computer communication can be wired networks, visual fibres, or microwave radio.

1. Wired networks: Wired networks are used for connecting wire on television for showing channel. Land line telephone and dial up connection for computer are some example of it.

2. Visual fibres: Visual fibres can carry more signals than wires. They are also known as optical fibres. They are often used for linking buildings on a college campus or corporate site and increasingly for longer distances as telephone companies update their networks.

3. Microwave radio: Microwave radio also carries computer network signals, generally as part of long-distance telephone systems. Low-power microwave radio is becoming common for wireless networks within a building.