Local Area Network – Computer Networking


Local Area Networks also called LAN has been a major player in the industrialization computers. In the past 20 or so years at home industry has been invaded by new computer technology. It has made such an impact on how we do business, it has become necessary with the ever increasing need for reform. Local giving the employer to share information between computers with a simple relatively inexpensive system network cards and software. It also allows the user or users share hardware such as printers and scanners. Speed ​​access between computers is lighting fast because the data is short in reach. In most cases, the LAN occupies only one or a group of buildings located next to each other. For larger areas it needs are some other types of networks such as the Internet.

lans system can identify and connect in many different ways. This is why standardization for each one can have common ground to start from. “The networks described here are distinguished from other types of data networks in that they are optimized for the medium size of the territory as a single office building, warehouse, or campus. The IEEE 802 LAN is a common medium of peer-to-peer communications network that broadcasts information for all stations to obtain. Consequently, it is not inherently provide privacy. The LAN allows stations to communicate directly with a common medium of a point-to-point basis without intermediate switching node is needed. There is always a need for access sublayer to arbitrate the access to the shared medium. The network is generally owned, used and managed by a single organization. This is in contrast to Wide Area Networks (WANs) which interconnects communication facilities in different parts of the country or are used as a public utility. These LAN are also different networks, such as Backplane buses, which are optimized for the interconnection of devices on the desk or components within a single piece of equipment. “(IEEE 802 Standard 1990) It is a standard definition for the networks of the Institute of Electrical and Electronics Engineer Committee 802. They are named used to set standards in workmanship and activities for technicians to install and perform maintenance on Lans system. And through all the technical words, what they are trying to say is LAN is a small area network that disseminates information among computers in a small environment unlike WANs that distribute information across international territories. “It is usually the case that the LAN is owned by the same organization as the attached devices. For WANs, this is less often the case, or at least a significant part of the net assets are not owned. This has two implications. First, be sure the selection of the LAN, where he could be a significant investment (compared to dial-up or leased lines charges for wide-area network) for both purchase and maintenance. Second, the network management responsibility for local network falls only on the user. ” (Local and metropolitan area networks 1997).

The question now is you have a standard and you are connected now how you manage the system to run flawless? “Networks use protocols or regulations, exchange of information, however, a single shared connection. These protocols prevent collisions of data due to the simultaneous transmission between two or more computers. Computers on most networks using protocols known as Ethernet or Token Ring. An Ethernet-connected computer checks if the common connection is used. If not, the computer sends data. Because the computer can detect idle connection and send data at the same time, send computers continue to monitor collectively their relationship and stop sending in case of collision. Token Ring protocol withstand a Message called icons today. A computer that receives symbol is given permission to send a packet of information or, if your computer does not have packages to send, it went icon next computer. “(Local Area Network Microsoft 2000) I know it is complicated to understand, but the actual user software handles most all the management for you.

There are seven things that networks can do that you can not easily do with non-networked stand-alone system. First share files “A LAN allows multiple users to share one copy of a file stored on a central file server computer.” (Introduction to Networking 1992) Transferring files “A LAN allows you to copy files from machine to machine without having to exchange floppy disks.” (Understanding Data Communications 1993) access data and files “A LAN allows anyone to run accounting software, for example, or other application software from any workstation “(Introduction to Networking 1992) share applications” A LAN allows two people to use the same copy of Microsoft Word word processing program simultaneously “(Introduction to Network 1992) Simultaneous key application . Printer sharing and e-mail in the system.

Finally LAN has become essential in the modern working environment. The ever increasing need for progress has become a very profitable industry in its self and it will continue to grow for a long time to come. For now we barely skimming the possibilities and uses for this new network technology.


Leave a Reply

Your email address will not be published. Required fields are marked *