Computer_Networking_Fundamentals

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					Title:
Computer Networking Fundamentals


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451


Summary:
A computer network is a collection of two or more computers with communication between them through a
medium. The communication medium can be through radio waves, wires, infrared, optical fibers etc.


Computer network is an integral part of our daily lives, with the most important reason being that of
communication. The use of computer networking is to share resources like fax machines, printers, modems,
files etc., and its other uses are database server, computer server, e...



Keywords:
computer networking,wireless networking,home networking,networking hardware,networking products



Article Body:
A computer network is a collection of two or more computers with communication between them through a
medium. The communication medium can be through radio waves, wires, infrared, optical fibers etc.


Computer network is an integral part of our daily lives, with the most important reason being that of
communication. The use of computer networking is to share resources like fax machines, printers, modems,
files etc., and its other uses are database server, computer server, email, chat, internet etc. The computer to
which the resources are attached is called the server and the other computers that access the resource are
called clients. In peer-to-peer computer networks there are no servers.


The sharing of fax machines, printers, and modems amongst many computers and users reduce the
operational cost. A database on a computer network is a very important application as it stores and runs
many important data and jobs. Emails and chats can be used for instantaneous communication and sending
of files on a computer network.


The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area
Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN). The topology
(topology is the way the computer networks and network resources are connected) of the networking can be
classified as Bus Network, Ring Network and Star Network.


The networking hardware basically consists of wiring, network cards and a hub. Computer network cards
are required so that one computer can understand what the other computer is “talking”. Network cards have
a unique MAC address to identify computers on a computer network. Hubs connect all the computers in the
network. Hubs can also be used to connect to other hubs to increase the size of the computer network. Two
computers can be connected using Ethernet cards or phone lines or power lines for communication, with
hardware kits available at roughly a cost of $100.


As the number of computers in an office or a home increases, so do the number of cables, so wireless
networking is a viable solution. In wireless networking radio transreceivers or infrared signals are used to
communicate between computers and devices. Examples of wireless networking include Wi-fi and
Bluetooth technology, though there may be security issues involved in wireless networking. However there
definitely is a stronger preference towards wireless networking nowadays among consumers.


Computer networks have added a new dimension to the 21st century. Today the cyber world is much faster
and wider than the real world. This has all been made possible due to computer networks. Computer
networks have revolutionized business, communication, travel, research, defense, society and almost all
human endeavors. The evolution of computer networks has helped the technological revolution take a big
leap forward.




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