A computer network is a set of nodes connected by communication links to deliver a set of information.
Nodes: a node can be a computer, printer, or device capable of sending or receiving data generated by other nodes in the network.
Examples: computers, servers, printers, CCTV, switches, bridges, routers, etc.
Communication links: a communication link can be wired or wireless connections.
- Links carry the information.
- Communication links can be wired or wireless connections. i.e links(medium) can be wired or wireless. i.e cable, air, Bluetooth, etc.
- A computer network is used for resource sharing.
Computer networks
| End devices | Intermediate devices |
| Printer | Router |
| Pc | Cloud |
| Server | Wireless router |
| Tablet | Cell tower |
| Smartphone | Switch |
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