COMPUTER NETWORK
A computer network, often simply referred to as a network, is a collection of computers and devices interconnected by communications channels that facilitate communications and allows sharing of resources and information among interconnected devices. Computer networking or Data communications (Datacom) is the engineering discipline concerned with the computer networks. Computer networking is sometimes considered a sub-discipline of electrical engineering , telecommunications, computer science, information technology and computer engineering since it relies heavily upon the theoretical and practical application of these scientific and engineering disciplines.
The three types of networks are: the internet, the intranet, and the extranet. Examples of different network methods are:
* Local area network (LAN), which is usually a small network constrained to a small geographic area. An example of a LAN would be a computer network within a building.
* Metropolitan area network (MAN), which is used for medium size area. examples for a city or a state.
* Wide area network (WAN) that is usually a larger network that covers a large geographic area.
* Wireless WANs and LANs (WLAN & WWAN) are the wireless equivalent of the LAN and WAN.
Networks may be classified according to a wide variety of characteristics such as topology, connection method and scale.
The Term Paper on Internet History Web Network Computers
INTRODUCTION The Internet is perhaps today's most influential technological advance. Significant events in history contributing to the development of the Internet can be traced back to as early as 1844. Here is a timeline of some significant events in history contributing to the development of the Internet: 1844 Telegraph 1858 First Atlantic Cable from North America to Europe 1867 Typewriter 1876 ...
Computer networks can be used for a variety of purposes:
Facilitating communications
Using a network, people can communicate efficiently and easily via email, instant messaging, chat rooms, telephone, video telephone calls, and video conferencing.
Sharing hardware
In a networked environment, each computer on a network may access and use hardware resources on the network, such as printing a document on a shared network printer.
Sharing files, data, and information
In a network environment, authorized user may access data and information stored on other computers on the network. The capability of providing access to data and information on shared storage devices is an important feature of many networks.
Sharing software
Users connected to a network may run application programs on remote computers.
Before the advent of computer networks that were based upon some type of telecommunications system, communication between calculation machines and early computers was performed by human users by carrying instructions between them. Many of the social behaviors seen in today’s Internet were demonstrably present in the nineteenth century and arguably in even earlier networks using visual signals. In September 1940 George Stibitz used a teletype machine to send instructions for a problem set from his Model at Dartmouth College to his Complex Number Calculator in New York and received results back by the same means. Early networks of communicating computers included the military radar system Semi-Automatic Ground Environment (SAGE), started in the late 1950s. In 1964, researchers at Dartmouth developed the Dartmouth Time Sharing System for distributed users of large computer systems. The same year, at Massachusetts Institute of Technology, a research group supported by General Electric and Bell Labs used a computer to route and manage telephone connections. Throughout the 1960s Leonard Kleinrock, Paul Baran and Donald Davies independently conceptualized and developed network systems which used packets that could be used in a network between computer systems.
The Essay on Wireless Networking Computer System User
WIRELESS COMPUTER NETWORKING Jennifer Velasco ERA Abstract Computer technology and use is more in demand today then ever. In an attempt to accommodate computer users, the amount of computer peripherals and accessories is on the rise. This paper will discuss a particular hardware that is on the market today, which is computer wireless networking. Moreover, it will go in depth as to what exactly ...
Today, computer networks are the core of modern communication. All modern aspects of the Public Switched Telephone Network (PSTN) are computer-controlled, and telephony increasingly runs over the Internet Protocol, although not necessarily the public Internet. The scope of communication has increased significantly in the past decade, and this boom in communications would not have been possible without the progressively advancing computer network. Computer networks, and the technologies needed to connect and communicate through and between them, continue to drive computer hardware, software, and peripherals industries. This expansion is mirrored by growth in the numbers and types of users of networks from the researcher to the home user.
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