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Monday, November 15, 2010

Fundamental ideas behind the Computer Networks

The sharing of fax machines, printers, modems and among many computers and users reduce operating costs. A database on a computer network is a very important application as it stores and manages many important data and jobs. Emails and chats can be used for instantaneous communication and sending files to a computer network - read white papers to learn more about how this applies to 2010.
 

Computer networks are classified according to size, such as local area networks (LAN), Wide Area Networks (WAN), metropolitan area networks (MAN) and personal area networks (PAN). The topology (topology is the way computer networks and network resources are connected) of networking can be classified as a bus network, ring network and Star Network.
 

The networking hardware basically consists of wiring, network cards and a hub. computer network cards are needed for a computer can understand what the other computer is "talking". NICs have a unique MAC address to identify computers on a network. Hubs connect all computers on the network. Hubs can also be used to communicate with other hubs to increase the size of the computer network. Two computers can be connected using Ethernet cards or telephone 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 does the number of cables, wireless network is a viable solution. In wireless networks transreceivers radio signals or infrared are used to communicate between computers and peripherals. Examples of wireless networking include Wi-Fi and Bluetooth, but there may be security issues involved in wireless networks. However there is certainly a stronger preference towards wireless networking nowadays among consumers. And yet, the network adapters have a unique MAC address to identify computers on a network. Hubs connect all computers on the network. Hubs can also be used to communicate with other hubs to increase the size of the computer network.
 

Computer networks have added a new dimension in the 21st century. Today, the cyber-world is much faster and wider than the real world. All this was made possible through computer networks. Computer networks have revolutionized business, communication, travel, research, defense, society and almost all human activities. The evolution of computer networks has contributed to the technological revolution take a big leap forward. Just to touch briefly on the classification of computer networks: local area networks (LAN), Wide Area Networks (WAN), metropolitan area networks (MAN) and personal area networks (PAN).

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