| WiFi is the other name for wireless internet or | | | | made without central device called router or |
| wireless network, this name is mostly used by | | | | access point. Most network administrators prefer |
| none technical users who just knows how to | | | | ad hoc over infrastructure mode. Ad hoc how |
| access internet wirelessly, they know pretty | | | | ever have issues also. Wifi devices connected |
| much nothing beyond that. WiFi is basically short | | | | using Ad hoc mode offers less security against |
| form for wireless fidelity. However many advance | | | | unauthorized users. Ad hoc mode configured |
| users are not well aware of this terminology | | | | devices cannot disable SSID broadcast in contrast |
| either, it is ,more known with a name of Wifi. WiFi | | | | to infrastructure mode, this brings hackers into |
| term is written in many ways which are, Wifi, | | | | play, and using ad hoc mode it is not very difficult |
| WiFi, WIFI, Wi-Fi fiwi etc. | | | | to prevail into the wireless network. There are |
| Wi-Fi was introduced by Wi-Fi alliance in 1985 it | | | | two major differences between these two |
| was the time when it was not used as | | | | modes that is the rate at which they transfer |
| commercially but were just set to certain | | | | data. Wife network standard 802.11g requires Ad |
| organizations for testing purposes. Wi-Fi Alliance is | | | | hoc mode of communication to support 11Mbps |
| pioneer in developing WiFi technology and all the | | | | bandwidth in contrast to it 54Mbps data transfer |
| hardware associated with Wifi is mostly certified | | | | is supported using infrastructure mode. Hence Ad |
| by Wifi Alliance compliance. Wifi later developed | | | | hoc mode is considered much slower than |
| properly and than eventually lunched for public use | | | | Infrastructure mode. |
| in USA in 90's, gradually wifi become standards | | | | Wireless based networks are increasing every |
| for most of the computer communications in | | | | where; every organization is installing it if it was |
| countless organizations around the world. | | | | not using it before. Some cities have actually |
| Wifi uses all the networks referring to any type | | | | provided the entire city a wifi and turn the city |
| of 802.11 network standards which is set by IEEE. | | | | into hotspot, big example in front of us is Chicago. |
| IEEE is short form of Institute of electric and | | | | Chicago have installed huge transmitter in shape |
| electronic engineering. There are lots of | | | | of big size dish of Wifi which broadcast Wireless |
| enhancements made in standards of 802.11 and | | | | LAN radio signals through out the city. It provides |
| 802.11a, 802.11b and other dual networks. The | | | | high speed internet connectivity very cheaply. |
| latest standard of 802.11 family is 802.11y. Other | | | | Laptops, desktop computers, PDAs and other |
| known standards are 802.16, these are the | | | | Wireless LAN card installed devices can access |
| standards for upcoming technology known to be | | | | the network and get high speed connectivity on |
| WiMax. There is one more known set of | | | | move. WiFi users increasing day by day therefore |
| standards for Ethernet it is known to be IEEE | | | | its hardware manufacturers are manufacturing |
| 802.3. | | | | the products on huge scale. These products are |
| Growth of Wifi networks is still on going world | | | | easily available in market with reasonable cost. |
| wide this huge growth raises security issues. Wifi | | | | Laptops, PDAs, mother boards of latest desktop |
| is the most widely used network world wide and | | | | computer are mostly come with build in wireless |
| many organizations transfer their sensitive data | | | | LAN cards. If it is not installed already in your |
| using Wireless networks. Increased use of | | | | laptop one can buy PCMCI slot wifi card to install |
| Wireless network increases potentially risks of the | | | | for accessing wireless network. Wifi PCI cards are |
| security of the users or organization. Wireless | | | | also widely available in market. Now USB wifi are |
| network carries data of every type, that can be | | | | also available for short range but still works good. |
| normal data in bits of information or it can | | | | Intelligent routers are available in market which |
| encrypted or even highly sensitive. WiFi security | | | | works to connect different devices to wireless |
| mechanism insures the certain level of data | | | | network. These routers can be configured with or |
| integrity and confidentiality just as wired network | | | | without PC. All is required to plug internet cable in |
| provides. However if proper security measures | | | | Ethernet or USB port to router's appropriate port. |
| are not adopted properly intruders can attack the | | | | When internet is available to routers it can be |
| network and can cause major damage to not | | | | configured using its control panel using IP |
| only network but privacy of users also. | | | | 192.168.1.1. That's where we can enable SSID |
| There was a time when cables were used to | | | | broadcasting or disable it and perform other |
| network many computers together. Hardware like | | | | functions. PCs can also be attached to routers for |
| routers, hubs, switches etc were required for | | | | more advance management which routers can |
| communication between computers, but Wifi | | | | not performs. PCs are mostly required to be used |
| brought high tech change in communication of | | | | where network is huge and keeping and |
| computers by providing wireless connectivity | | | | maintaining its integrity and stability is very |
| features. It just keeps things very simple without | | | | important. |
| much hassle and networks can be made far more | | | | In this modern era every one wants every thing |
| easily. No wires are required. Wireless network | | | | wireless, Wifi belongs to wireless technology |
| keeps environment very neat and clean. There | | | | family. There are so many other wireless |
| are many other features of Wireless LANs for | | | | technologies which have evolved around the time |
| example high speed connectivity. Wifi provides | | | | and Wifi is now taken for granted and world is |
| high speed connectivity and faster communication | | | | now talking about much advanced and enhanced |
| where cables are not feasible to install for | | | | wireless network known to be WiMax. WiMax |
| example in remote areas. The list of the Wifi | | | | beats Wifi technology on many bases which |
| features is long some other major features | | | | includes Speed at which data rate is transferred, |
| included Site survey, enterprise grade equipment, | | | | range with which connection is made and so much |
| Scalable systems, VPN Compatibility, flexible | | | | more. Now we have to see in how much time |
| authentication methods, Guest satisfaction, End | | | | WiMax will take over WiFi, and which technology |
| user mobility and easy access through Hotspots. | | | | will eventually take over WiMax. One thing is for |
| WiFi supports two different types of modes; they | | | | sure latest technologies in wireless technology will |
| are known to be infrastructure and the other one | | | | keep coming and will keep getting over looked by |
| is ad hoc. In Ad hoc Wireless connections can be | | | | new ones. |