COMPUTER NETWORKS

Computer Networks



Computer Networks

Introduction

One of the most promising technologies and discussed in this decade is to be able to communicate computers using technology wirelessly. Connecting computers using radio waves or infrared light is currently being extensively investigated. The Networking Wireless facilitates operation in places where the computer cannot stay in one place, such as stores or offices that are located on several floors. Not expected to reach wireless networks replace wired networks. They offer higher transmission speeds than those achieved with wireless technology. While wireless networks offer speeds of current 2 Mbps, wired networks offer speeds of 10 Mbps and is expected to reach speeds of up to 100 Mbps Cable Systems Fiber Optic achieve even higher speeds, and thinking futuristically are expected to Wireless networks reach speeds over 10 Mbps, however can be mixed wired and wireless networks, and thus generate a “Red Hybrid "and solve the last mile to the station. You can consider the system wiring is the main part and to provide additional mobility wireless equipment and the operator can move easily within a warehouse or office (Nicopolitidis, 2003).

This study will show the various advantages of wireless networks along with a step by step wireless network guide (Ad Hoc wireless network) in order to connect two computers with each other, which can be applied to connect more than two computers as well.

Discussion

There are two broad categories of wireless networks:

Long Distance: These are used to convey information in spaces that can vary from one city or even several surrounding countries (better known as Metropolitan Area Networks MAN); their transmission rates are relatively low, from 4.8 to 19.2 Kbps.

Short Distance: These are mainly used in corporate networks whose offices are located in one or more buildings that are not far removed from each other, with speeds of the order of 280 Kbps to 2 Mbps (Lewis & Davis, 2004).

The main advantages of wireless versus wired networks are:

Mobility: Freedom of movement is one of the most obvious benefits of wireless networks. A computer or other device (such as a PDA or a webcam) can be placed anywhere within the coverage area of the network without having to depend on whether or not it is possible to get a cable to this site. You no longer need be tied to a cable to surf the Internet, print a document or access to resources.

Shared from anywhere in it, making presentations in the meeting room, access files, etc.., Without running cables through the middle of the room or depend on whether the network cable is long enough or not.

Displacement: With a laptop or PDA can not only access the Internet or any other local network resources from anywhere in the office or home, but we can move without losing communication. This not only gives some comfort, but easier to work on particular tasks, for example, of those employees whose work takes them to move around the building.

Flexibility: Wireless networks not only allow us to stay connected as ...