What is computer networking?
For students taking computer engineering and electronics students, computer networking is one most essential and interesting subjects. In general, computer networking is the ability and knowledge of creating connections between a number of computers or computing devices with the main aim of sharing data, resources, and information. A computer network is a mixture of unified computers with the aim of communication. The networks can be categorized depending on the topology on which the network is built. The topology could be bus topology, star topology, mesh topology, ring topology, tree topology, hierarchical topology, or hybrid topology. For the creation of different networks, different network devices are used and they include modem, repeater, hub, router, switch, firewall, bridge, and network interface card.
Categories of computer networks
- Local Area Network (LAN)
This is a kind of network system that is mounted in a structure and function below a single managerial structure. This kind of system is mostly used in government workplaces, colleges, academia, etc. The system typically has its server that has its presentations and loading schemes that are communal among operators. The number of operators can differ. For LAN, the most shared procedure is Ethernet and Wi-Fi with wireless LAN being favored over wired LAN.
- Wide Area Network (WAN)
This kind of network serves a greater community situated in a larger geographical area.
- Metropolitan Area Network (MAN)
This type of network connects computer devices in a larger geographical area than LAN and can span to a few buildings or a whole town. This kind of system shelters a superior part than LAN but lesser than WAN. It’s links usually use heat, wireless laser broadcasts to attach between two LANs.
Wireless Local Area Networks
- This kind of network can be used without any physical media or wires to join various computers within one server.
The protocol of computer networking
In computer networking, two models are used. They include Open System Interconnection (OSI) that has seven layers. The layers include the application layer, presentation layer, session layer, transport layer, network layer, data link layer, and the physical layer.
The second model is the Transmission control protocol-internet protocol that has four layers. The layers include the application layer, transport layer, internet layer, and lastly the network layer.
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