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in computing, two or more computers connected for the purpose of routing, managing, and storing rapidly changing data. A local area networklocal area network
(LAN), a computer network dedicated to sharing data among several single-user workstations or personal computers, each of which is called a node. A LAN can have from two to several hundred such nodes, each separated by distances of several feet to as much as a
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 (LAN), which is restricted by distances of up to one mile, and a metropolitan area network (MAN), which is restricted to distances of up to 60 miles, connect personal computers and workstations (each called a node) over dedicated, private communications links. A wide area network (WAN) connects large numbers of nodes over long-distance communications links, such as common carrier telephone lines, over distances ranging from that between major metropolitan centers to that between continents. An internet is a connection between networks. The InternetInternet, the,
international computer network linking together thousands of individual networks at military and government agencies, educational institutions, nonprofit organizations, industrial and financial corporations of all sizes, and commercial enterprises (called gateways
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 is a WAN that connects thousands of disparate networks in the U.S., Canada, Europe, Asia, and elsewhere, providing global communication between nodes on government, educational, and industrial networks. Networks allow for resource sharing (e.g., multiple computers sharing one printer), data sharing, and communication or data exchange (e.g., electronic mailelectronic mail
or e-mail,
the electronic transmission of messages, letters, and documents. In its broadest sense electronic mail includes point-to-point services such as telegraph and facsimile (fax) systems.
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See W. Stallings, ed., Advances in Local and Metropolitan Area Networks (1994); F. Halsall, Data Communications, Computer Networks, and Open Systems (4th ed. 1996); R. Cahn, Wide Area Network Design: Concepts and Tools for Optimization (1998); T. Parnell and C. Null, Network Administrator's Reference (1999).

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A group of computer systems situated at different locations and interconnected in such a way that they can exchange information by following agreed procedures. The information is transmitted as an encoded signal at high speed over communication lines. See also computing.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006


Any set of interconnected elements that form an overall organization; also a diagram representing a series of interconnected events, as in the representation of the critical tasks in a building project.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved


A number of radio or television broadcast stations connected by coaxial cable, radio, or wire lines, so all stations can broadcast the same program simultaneously.
A collection of electric elements, such as resistors, coils, capacitors, and sources of energy, connected together to form several interrelated circuits. Also known as electric network.
The name given to a graph in applications in management and the engineering sciences; to each segment linking points in the graph, there is usually associated a direction and a capacity on the flow of some quantity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


1. An aggregate of interconnected electric conductors consisting of high-voltage feeders, step-down transformers, protective devices, mains, and services.
2. In CPM terminology, the same as arrow diagram.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.


1. Electronics a system of interconnected components or circuits
2. Computing a system of interconnected computer systems, terminals, and other equipment allowing information to be exchanged
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


Hardware and software data communication systems.

The OSI seven layer model attempts to provide a way of partitioning any computer network into independent modules from the lowest (physical) layer to the highest (application) layer. Many different specifications exist at each of these layers.

Networks are often also classified according to their geographical extent: local area network (LAN), metropolitan area network (MAN), wide area network (WAN) and also according to the protocols used.

See BITNET, Ethernet, Internet, Novell, PSTN, network, the.

[Tanenbaum, A., "Computer Networks; 2nd ed.", Prentice Hall, Englewood Cliffs, NJ, 1989.]
This article is provided by FOLDOC - Free Online Dictionary of Computing (


(1) Any arrangement of elements that are interconnected. See neural network and network database.

(2) A system that transmits data between users, which includes the client devices (computers, tablets and phones) and the network equipment (servers, switches, routers and cables). In wireless systems, antennas replace the cables.

LANs and WANs
Local area networks (LANs) are internal to a home, building or complex, and are almost exclusively Ethernet for cabled devices and Wi-Fi for wireless. Wide area networks (WANs) span large distances, such as a state or nation. See LAN, WAN, Ethernet, Wi-Fi, client, server, switch, router, enterprise networking and communications.
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References in periodicals archive ?
A problem with that network, outside of security, was that if a problem occurred anywhere along that string of cable, the entire network on that cable stopped functioning.
Another extrusion installation of distributed controls has pressure sensors networked through discrete controllers with Profibus protocols.
In Chicago, Los Angeles, Orlando, Memphis, Atlanta and other regions, the expanding network is leading to greater urban sprawl.
Indeed, dual-mode phones can access off-campus WiFi networks and cellular systems, and they aren't dependent on an institution's private network for voice and data services.
Once your VPN is set up, not only will staff members be able to telecommute, but any data stored on the network will be immediately available to all the remote users and any data the remote users produce will be immediately available on the network.
At that point, the student hacker can "listen in" to any data transmissions over the Wi-Fi network. If a teacher logs on to the school's servers wirelessly, the student may be able to pick up the teacher's username and password.
Vendor Agnostic -- Analysts and network experts alike recommend that security be deployed in a layered, best-of-breed approach.
We're going to let people see the network, and if they disagree with the position we take, they themselves will decide to turn us off.
ARKANSAS RADIO NETWORK * 700 Wellington Hills Rd, Little Rock, AR 72211; 501/401-0200, 800/264-7500 Year established: 1967 Number of ag employees: 3 40 stations in AR all carrying farm programming.
CinTel Corp., while based in the U.S., has its main business operations in Korea that provides enterprise technology solutions to deliver faster internal and external network service.
Network theory was probably first introduced in the field of electrical and electronic engineering (Murdock, 1927).
This gives a person a sense of whether their network may be relatively small or redundant, and provides baseline on which to build.

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