Explain Classification of computer network.

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 Classification of computer networks based on geography:

LAN - Local Area Network

MAN - Metropolitan Area Network

WAN - Wide Area Network

CAN - Campus Area Network

PAN - Personal Area Network

PAN:

1. A PAN is personal area network is used for communication among computer devices close to one’s person.

2. Wireless networking or Bluetooth technologies are the some examples of PAN. The communication network established for the purpose of connecting computer devices of personal use is known as the PAN.

CAN:

1. CAN is a Campus Area Network is used to connect buildings across campuses of colleges or Universities.

2. A CAN is actually a type of LAN.

3. It is larger than a LAN but smaller than MAN. CAN is a network that connects two or more LANs but that is limited to a specific and contiguous geographical area such as a college campus, industrial complex or military base.

LAN:

1. LAN is local area network. LAN is privately-owned networks covering a small geographic area(less than 1 km), like a home, office, building or group of buildings.

2. LAN transmits data with a speed of several megabits per second.

MAN:

1. A Metropolitan Area Network (MAN) is a large computer network that spans a metropolitan area or campus.

2. A MAN typically covers an area up to 10 kms (city). The best example of MAN is the cable Television network, available in many cities.

3. For an organization, the common use of a MAN is to extend their LAN connectivity between buildings/offices that are within the same city or urban area

4. The organazation can pass their Ethernet frames to the service provider MAN; the service provider will carry their frames across the MAN; and then deliver the frames to the destination site.

5. From the customer's point of view, the MAN looks like one big (long) Ethernet linkbetween their offices.

6. The different sites could belong to the same IP subnet, and from the customer's viewpoint, no routing is required between their sites.

WAN:

1. WAN is wide area network.

2. WAN is a long-distance communication network that covers a wide geographic area,such as state or country.

3. The most common example is internet.

4. A WAN provides long-distance transmission of data, voice, image and video information over larger geographical areas that may comprise a country or even whole world.

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