A local area network (LAN) is a group of computers and associated devices that share a common
communications line or wireless link. Typically, connected devices share the resources of a single
processor or server within a small geographic area (for example, within an office building).
Usually, the server has applications and data storage that are shared in common by multiple
computer users. A local area network may serve as few as two or three users (for example, in a home
network) or as many as thousands of users (for example, in an FDDI network).
Major local area network technologies are:
A metropolitan area network (MAN) is a computer network in which two or more computers or communicating devices or networks which are geographically separated but in same metropolitan city and are connecte
d to each other are said to be connected on MAN. Metropolitan
limits are determined by local municipal corporations; the larger the
city, the bigger the MAN, the smaller a metro city, smaller the MAN.
A wide area network (WAN) is a network that covers a broad area (i.e., any telecommunications network that links across metropolitan, regional, or national boundaries) using leased telecommunication lines
.
Business and government entities utilize WANs to relay data among
employees, clients, buyers, and suppliers from various geographical
locations. In essence, this mode of telecommunication allows a business
to effectively carry out its daily function regardless of location. The
Internet can be considered a WAN as well, and is used by businesses,
governments, organizations, and individuals for almost any purpose
imaginable
Major local area network technologies are:
- Ethernet
- Token Ring
- FDDI
A metropolitan area network (MAN) is a computer network in which two or more computers or communicating devices or networks which are geographically separated but in same metropolitan city and are connecte
d to each other are said to be connected on MAN. Metropolitan
limits are determined by local municipal corporations; the larger the
city, the bigger the MAN, the smaller a metro city, smaller the MAN. | “ | A MAN is optimized for a larger geographical area than a LAN, ranging from several blocks of buildings to entire cities. MANs can also depend on communications channels of moderate-to-high data rates. A MAN might be owned and operated by a single organization, but it usually will be used by many individuals and organizations. MANs might also be owned and operated as public utilities. They will often provide means for inter networking of local networks. |
.
Business and government entities utilize WANs to relay data among
employees, clients, buyers, and suppliers from various geographical
locations. In essence, this mode of telecommunication allows a business
to effectively carry out its daily function regardless of location. The
Internet can be considered a WAN as well, and is used by businesses,
governments, organizations, and individuals for almost any purpose
imaginable
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