A computer network is 2 or more computers linked together for sharing of resources.
We use computer networks to:
- Share data e.g. reports
- Communication e.g. e-mail and IM's
- Share equipment
- Access internet connection
- Store and access work anywhere
We face the following problems whilst using networks:
- Insecurity: hackers
- Main server fails - entire network affected
- No privacy - espionage
- Ease of virus spread
- Expensive to set up
Common terms:
- Client-computer - computers used by users to access data from server.
- Server-computer - main computer that stores all data.
- Workstation-computer - End terminal without a processor.
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