For example, computers can communicate via fiber optic cables at extremely high speeds by using impulses of light. And in a wireless network, computers communicate by using radio signals. Client computers Server computers Network interface- network port Cable: Computers in a network are usually physically connected to each other using cable Switches: You don't typically use network cable to connect computers directly to each other. Instead, each computer is connected by cable to a central switch, which connects to the rest of the network Wireless networks: In a wireless network, most cables and switches are moot. Radio transmitters and receivers take the place of cables. Of course, the main advantage of wireless networking is its flexibility: no cables to run through walls or ceilings, and client computers located anywhere within range of the network broadcast. Network software: What really makes a network work is software, which has to be set up just right to get a network working
What is Network: A network is simply two or more computers, connected, so that they can exchange information (such as e-mail messages or documents) or share resources (say, disk storage or printers).
Benefits of network:
- Sharing resources
- Sharing information
- Sharing applications