Tuesday 31 July 2012

Local Area Network | LAN in networking | Types of Network - LAN

A local Area Network (LAN) is a group of computers and associated devices that share a common communications line or wireless link.


A LAN usually connects servers, workstations, printers, and mass storagedevices, enabling users toshare the resources.

Most local area network share built with relativelyinexpensive hardware suchas Ethernet cables, network adapters, and hub.




LAN characteristics are determined by:

Topologies
 MAC (Medium Access Control)
 Transmission media
 Size of coverage

LAN Interconnection

Traditional LAN interconnection devices



Repeater – it operates at OSI layer 1 and transmits data bits over a physical medium. 
Bridge – it operates at OSI layer 2 and is commonly used to connect similar LAN segments.
Switch – it operates at OSI layer 2 or layer 3 and is used to interconnect multiple similar or dissimilar LANs.
Router – it operates at OSI layer 3. A router is used to interconnect  individual networks whose sizes vary from very small to very large. Routers may be categorized into backbone router (or core router), border router and access router depending on their role in the network.



6 comments:

Learned a lot about networking from this blog. Thanks for sharing.
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