12. computer networks
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- Created on: 04-11-12 23:13
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- 12. Computer Networks
- ADVANTAGES OF NETWORKS
- Printers and other peripherals can be shared, one per room, not one per computer.
- Software can be shared – just install it on the server
- Files can be saved to the server – data can be accessed from any workstation.
- NETWORKS
- Metropolitan Area Network (MAN) - covers large areas, eg, a city.
- Local Area Network (LAN) – self-contained within a single building or group of buildings, eg, a school.
- Wide Area Network (WAN) - covers a much wider area, even worldwide, such as all the offices of a large corporation.
- Networks allow the sharing of data, peripherals and software.
- CLIENT-SERVER
- The server has a specialised network operating system to control user rights and to store individual users’ files.
- A client-server network uses a server to control it.
- Client-server networks allow centralised control over security and backup.
- PEER-TO-PEER
- When there are more than two computers, the hub provides the connectivity.
- A peer-to-peer network could just be two computers linked together that can share resources, eg, a printer.
- Many homes use peer-to-peer.
- ADVANTAGES OF NETWORKS
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