Networks. What is a computer network?. A network is two or more computers that are linked together so that they are able to share resources. Shared resources include. Hardware – printers, scanners, storage, etc. Software – need only be installed on one computer. Data (e.g. database files).
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A network is two or more computers that are linked together so that they are able to share resources.
Local area networks:
Confined to a small area.
Usually located in a single building.
Use cable, wireless, infrared and microwave links that are usually owned by the organization.
Cheap to build.
Cheap to run.
Wide area networks:
Cover a wide geographical area (i.e., between cities, countries and even continents).
In lots of different buildings and cities, countries, etc.
Use more expensive telecommunication links that are supplied by telecom companies.
Expensive to build.
Expensive to run.
A network interface card:
Network software consists of:
by which the data is
transferred in a
network can be: