Wireless Networks

Components of a Wireless Network

A network free of wires utilizes several different components in order to operate. Since the connection between computers does not employ wires, radio frequencies function as the method for transmitting data. In order for a computer to relay information via radio waves, a wireless modem must be connected to the computing device, and a receiver that connects the airflowing data must be connected to an existent, traditional, local-area network (LAN). The wireless modem is often a credit card–sized electronic apparatus that fits into a slot within a laptop or desktop computer, permitting the computer to send and receive data. To provide the remote computer with Internet access, there must also be a device that connects the computer to a physically located LAN of wires. This connection is achieved through what is called an access point.

As described by Nancy Ferris, a writer for Government Executive, the components of a wireless network are very distinctive, yet critical to its successful operation. Ferris explains that radio frequency permits a linkage between the access point and the wireless modem within a certain distance. Since signal strength is critical to the connection between the network and the node (the remotely located wireless computer), the distance between the two becomes a critical factor. Depending on the vendor and equipment being used, computers can often communicate at distances of 125 feet and beyond. However, the distance at which a computer will be able to communicate is largely determined by the architecture of the building that contains it, as well as by the strength of the modem and access point.

The area in which the data is diffused is also a significant component; obstructions lessen the efficiency and effectiveness of a wireless network. If the interior walls of a building are constructed of dense materials like cement, data will not flow between the modem and the access point. Data-transmission rates of the modem and access point must also be sufficiently powerful. However, the design of wireless networks can remedy non-conducive environments. For instance, access points can be placed almost anywhere, and computers can still communicate with wired LANs in areas where an access point is installed; the more access points to a LAN, the more locations become operable for information passage.

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