WiFi is the other name for wireless internet or wireless network, this name is used by non technical person, who just know how to access internet wirelessly. Even many advanced users are not aware of this technology, they known with a name of WiFi.
WiFi was introduces by WiFi alliance in 1985. Wi-Fi Alliance is pioneer in developing WiFi technology and all the hardware associated with WiFi is mostly certified by Wifi Alliance compliance. Wifi later developed properly and than eventually lunched for public use in USA in 90’s, gradually wifi become standards for most of the computer communications in countless organizations around the world.
WiFi uses all the networks referring to any type of 802.11 network standards which is set by IEEE. IEEE is short form of Institute of electric and electronic engineering. There are lots of enhancements made in standards of 802.11 and 802.11a, 802.11b and other dual networks. The latest standard of 802.11 family is 802.11y. Other known standards are 802.16, these are the standards for upcoming technology known to be WiMax. There is one more known set of standards for Ethernet it is known to be IEEE 802.3.
WiFi is still more popular because of huge growth raises security issues. WiFi is the most widely used network for transferring sensitive data using Wireless networks. Increased use of Wireless network increases potentially risks of the security of the users or organizations. Wireless network can transfer any type of data like, normal data or it can encrypted or even highly sensitive data. WiFi security mechanism insures the certain level of data integrity and confidentiality just as wired network provides. If proper security measures are not adopted, intruder can attack the network and they can cause major damage.
Hardware like routers, hubs, switches etc were required for communication between computers, but when the WiFi comes popular, there is change in communication of computers by providing wireless connectivity features. In WiFi no wires are required. Wireless network keeps environment very neat and clean. WiFi provides high speed connectivity and faster communication. The list of the Wifi features is long some other major features included Site survey, enterprise grade equipment, Scalable systems, VPN Compatibility, flexible authentication methods, Guest satisfaction, End user mobility and easy access through Hotspots.
WiFi supports two different types of mode; first one is infrastructure and second one is Adhoc. In Adhoc wireless connections can be made without central device called router or router or access point. Many of network administrators prefer Adhoc mode over infrastructure mode. WiFi devices connected using Adhoc mode offers less security against unauthorized users. Ad hoc mode configured devices cannot disable SSID broadcast in contrast to infrastructure mode, this brings hackers can easily break all security. There are two major differences between these two modes that is the rate at which they transfer data. Wife network standard 802.11g requires Ad hoc mode of communication to support 11Mbps bandwidth in contrast to it 54Mbps data transfer is supported using infrastructure mode. So, Adhoc is much slower than the other mode.
Now a days wireless based networks are increasing every where; even some cities have actually using WiFi. WiFi provides high speed internet connectivity. Laptops, desktop computers, PDAs and other Wireless LAN card installed devices can access the network and get high speed connectivity on move. WiFi are easily available in the market with reasonable cost. If Wifi is not installed in your laptop, in that case you can buy PCMCI slot WiFi card to install for accessing wireless network. Now USB wifi are also available for short range but still works good.
In this modern era every one wants every thing wireless, There are many more wireless technology and world is now talking about much advanced and enhanced wireless network know to be WiMax. WiMax beats Wifi technology on many bases which includes Speed at which data rate is transferred, range with which connection is made and so much more. Now we have to see in how much time WiMax will take over WiFi, and which technology will eventually take over WiMax. One thing is for sure latest technologies in wireless technology will keep coming and will keep getting over looked by new ones.