The term Wireless Networking refers to technology that enables two or more computers to communicate using standard network protocols, but without network cabling. Such wireless connections are often used in offices, where users with notebooks need to be able to move between different rooms and need to continue to be connected to the network without having the need to re-connect to a networkcable.
There are two kinds of Wireless Networks: An ad-hoc, or peer-to-peer wireless network consists of a number of computers each equipped with a wireless networking interface card. Each computer can communicate directly with all of the other wireless enabled computers. They can share files and printers this way. And wireless network which use an Access Point, or base station. An Access Point is essentially a hub that allows multiple systems with WLAN network cards to connect to the network,There may be some confusion over the difference between Access Points and WLAN Routers. The main thing to remember is that Access Points allow wireless clients access to a single network, while WLAN Routers allow clients to browse a number of different networks. The Router always takes the IP address into account to make decisions on how to forward (i.e., route) the packet, whereas, access points generally ignore the IP address and forward all packets.
- Linksys Access Point screenshot -
Wireless Network Cards come in a couple of flavors, including a PCI Card for workstations and PC Cards for laptops and other mobile devices. You'll need to be aware of the 3 wireless standards that are available: -Wireless G: Operates at 2.4GHz, which is the same frequency as microwave ovens and some cordless phones. Any time you have two electronic devices running at the same frequency, you get interference - this includes your next door neighbor's router. Most people determining for this standard. Also known as "802.11g". -Wireless B: Operates at the same frequency as Wireless G cards, 2.4GHz. The only difference is that B is slower than G, although B will not slow your broadband Internet. Since G is available at nearly the same cost, this standard is slowly disappearing. G and B cards are compatible, you can mix and match on the same wireless network. Also known as "802.11b. -Wireless A: Operates at a higher frequency of 5GHz. It has less range than G/B, but is far less susceptible to interference. Be aware that A is not compatible with G or B, but if you have issues (like an apartment with wireless next door), Wireless A is the way to go. Also known as "802.11a". you may be wondering what is 802.11? 802.11 is a standard for wireless transmissions set by the Institute of Electrical and Electronic Engineers (IEEE).
