A. Network

- A network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.

The Network allows computers to connect and communicate with different computers via any medium. LAN, MAN, and WAN are the three types of the network designed to operate over the area they cover.
The full forms of types of network are mentioned below:

  1.          LAN – Local Area Network
  2.          MAN – Metropolitan Area Network
  3.          WAN – Wide Area Network

Local Area Network (LAN): A local area network (LAN) could be a cluster of computers and associated devices that share a standard communications line or wireless link to a server. Typically, a local area network encompasses computers and peripherals connected to a server among a definite geographic a region like a 

workplace or a billboard institution. Computers and different mobile devices use a local area network affiliation to share resources like a printer or network storage.

acronym for wide area network is a broad area network of interconnected devices which are not limited to a room, building or campus; in fact, it extends to a large geographical area such as across cities, countries, or continents. The networks are established using leased telecommunication circuits and a router is typically used to connect a LAN to a WAN network. The best example of a WAN is the Internet which connects many smaller LANs and MANs through ISPs.

Short for Metropolitan Area Network, a data network designed for a town or city. In terms of geographic breadth, MANs are larger than local-area networks (LANs), but smaller than wide-area networks (WANs). MANs are usually characterized by very high-speed connections using fiber optical cable or other digital media.


- LAN is considered as a stand-alone network that connects computers and workstations across standard ethernet ables some wireless networks are often established using WIFI while ethernet is the commonly used LAN that controls the data transmitted through a LAN.

- WAN connects multiple LAN's to establish a network  that allows users in one location to communicate with users in another location it is limited to an enterprise or an organization.

- MAN interconnects several LAN's into a single large network by bridging them with backbone lines.

Key Differences Between LAN, MAN and WAN
1.     The geographical area covered by LAN is small, whereas, MAN covers relatively large and WAN covers the greatest of all.
2.     LAN is confined to schools, hospitals or buildings, whereas, MAN connects small towns or Cities and on the other hand, WAN covers Country or a group of Countries.
3.     Devices used for transmission of data are-
LAN: WiFi, Ethernet Cables.
MAN: Modem and Wire/Cable
WAN: Optic wires, Microwaves, Satellites.
4.     LAN’s transmit data at a faster rate than MAN and WAN.
5.     Maintenance of LAN is easier than that of MAN and WAN.
6.     The bandwidth available for transmission is higher in LAN than MAN and WAN.
7.     Data transmission errors and noise are least in LAN, moderate in MAN and high in WAN.


-LAN, MAN, and WAN. These are the major types of network designed to establish a network within the area they cover. There are similarities and differences between them. One of the major differences is, of course, the geographical area. Local area network is usually a building or a campus with a very limited distance coverage of up to a few hundred meters, metropolitan area network is relatively a new class of network which extends beyond the area of a LAN but smaller than that of a WAN. Wide area network covers a huge geographical area in the range of up to 100,000 kilometers.

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