A local area network is a system of inter located personal computers, sharing resources like disks, printers, etc. Local area network links a number of computer together to allow many people to use the same computer programs and share information. Each user accesses the network from an individual personal computer workstation. LAN is a multiuser system based i.e. distributed processing power.

Features of Local Area Network:

1. A common communication medium over which all user devices can share information programs, and equipment with regard to physical location of the user or the resources
2. The system normally is able to support transmission between work stations at the maximum speed at which work station can communicate.
3. The geographic range is generally 10 miles or 16 kilometers
4. A low error rate -a build in method of deleting and compensation for system error.
5. User administered private ownership, no interference of state telecom departments.

Resource Sharing:

1. Prevents overspending on printers and other peripherals.
2. Permits sharing expensive hardware. Facilitates sharing complex programs and the information processing.

Productivity:

1. Enables wider distribution of information and the technologies needed to deal with it.
2. Improves information retrieval, processing, storage, dissemination through a distributed database.
3. Minimize the redundancy of data and tasks.

Communication:

1. Facilitates communication with in the organization by exchanging data and sharing information, provides in house computer to computer at high speed without complex masses of cable.
2. Supply a method of accessing remote resources.

Management:

1. Increases performance through distribution of tasks and equipment.
2. Improves the availability of computer resources i.e. if one system is busy, other system user an be used.
3. System reliability-if one system fails other system can quickly take up the load.

The Advantages of LAN:

1. Provides cost effective multi equipment.
2. It can be tailored to suit any type of application.
3. Any number of users can be accommodated.
4. It is flexible
5. Allows sharing of mass central storage and printers
6. It allows files/record locking
7. Provides security against illegal access to data
8. It provides data integrity.

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