COMPUTER NETWORKS CLASSIFICATION

COMPUTER NETWORKS CLASSIFICATION

Network could be classified into following three categories:

  •  Local Area Network. (LAN)
  •  Metropolitan Area Network (MAN)
  •  Wide Area Network (WAN) 

LOCAL AREA NETWORK

Network used to interconnect computers in a single room, rooms
within a building or buildings one site are normally called Local Area
Networks (LANs). LANs normally transmit data in a digital form with
typical transmission speeds of up to several megabytes per second.
These speeds can be achieved using parallel transmission where a
cable with multiple core is used, or serial transmission, making use
of high frequency carriers, using coaxial cables, fibre optical or even
a simple pair of wires because distances are short. Modems are not
normally required although some mechanism for converting from
parallel to serial transmission and back again may be needed. In
Fig.1.1, there is an example of local Area Network as may be used
on a single site within an organization. The terminals and
workstations in Fig 1.1 are able to connect to either of two host computers.
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