Wednesday, November 12, 2008

WiFi Supports Two Different Types Of Modes

Business, Communication.

A word about wifi or wi - fi technology - wifi is the other name for wireless internet or wireless network, this name is mostly used by none technical users who just knows how to access internet wirelessly, they know pretty much nothing beyond that. However many advance users are not well aware of this terminology either, more known with, it is a name of Wifi.


WiFi is basically short form for wireless fidelity. - wifi term is written in many ways which are, wifi, wifi, wifi, wi - fi fiwi etc. Wi - Fi Alliance is pioneer in developing WiFi technology and all the hardware associated with Wifi is mostly certified by Wifi Alliance compliance. Wi - Fi was introduced by Wi - Fi alliance in 1985 it was the time when it was not used as commercially but were just set to certain organizations for testing purposes. 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. IEEE is short form of Institute of electric and electronic engineering.


Wifi uses all the networks referring to any type of 8011 network standards which is set by IEEE. - there are lots of enhancements made in standards of 8011 and 8011a, 8011b and other dual networks. Other known standards are 8016, these are the standards for upcoming technology known to be WiMax. The latest standard of 8011 family is 8011y. There is one more known set of standards for Ethernet it is known to be IEEE 80 Growth of Wifi networks is still on going world wide this huge growth raises security issues. Increased use of Wireless network increases potentially risks of the security of the users or organization. Wifi is the most widely used network world wide and many organizations transfer their sensitive data using Wireless networks.


Wireless network carries data of every type, that can be normal data in bits of information or it can encrypted or even highly sensitive. - however if proper security measures are not adopted properly intruders can attack the network and can cause major damage to not only network but privacy of users also. WiFi security mechanism insures the certain level of data integrity and confidentiality just as wired network provides. There was a time when cables were used to network many computers together. It just keeps things very simple without much hassle and networks can be made far more easily. Hardware like routers, switches etc were, hubs required for communication between computers, but Wifi brought high tech change in communication of computers by providing wireless connectivity features. No wires are required.


There are many other features of Wireless LANs for example high speed connectivity. - wireless network keeps environment very neat and clean. Wifi provides high speed connectivity and faster communication where cables are not feasible to install for example in remote areas. WiFi supports two different types of modes. The list of the Wifi features is long some other major features included Site survey, Scalable systems, enterprise grade equipment, VPN Compatibility, Guest satisfaction, flexible authentication methods, End user mobility and easy access through Hotspots. They are known to be infrastructure and the other one is ad hoc.


Most network administrators prefer ad hoc over infrastructure mode. - in ad hoc wireless connections can be made without central device called router or access point. Ad hoc how ever have issues also. Ad hoc mode configured devices cannot disable SSID broadcast in contrast to infrastructure mode, this brings hackers into play, and using ad hoc mode it is not very difficult to prevail into the wireless network. Wifi devices connected using Ad hoc mode offers less security against unauthorized users. There are two major differences between these two modes that is the rate at which they transfer data.


Hence Ad hoc mode is considered much slower than Infrastructure mode. - wife network standard 8011g requires ad hoc mode of communication to support 11mbps bandwidth in contrast to it 54mbps data transfer is supported using infrastructure mode. Wireless based networks are increasing every where. Some cities have actually provided the entire city a wifi and turn the city into hotspot, big example in front of us is Chicago. Every organization is installing it if it was not using it before. Chicago have installed huge transmitter in shape of big size dish of Wifi which broadcast Wireless LAN radio signals through out the city. Laptops, PDAs and other, desktop computers Wireless LAN card installed devices can access the network and get high speed connectivity on move.


It provides high speed internet connectivity very cheaply. - wifi users increasing day by day therefore its hardware manufacturers are manufacturing the products on huge scale. Laptops, mother boards of, PDAs latest desktop computer are mostly come with build in wireless LAN cards. These products are easily available in market with reasonable cost. If it is not installed already in your laptop one 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. Wifi PCI cards are also widely available in market.


Intelligent routers are available in market which works to connect different devices to wireless network. - all is required to plug internet cable in ethernet or usb port to router' s appropriate port. These routers can be configured with or without PC. When internet is available to routers it can be configured using its control panel using IP 1916That' s where we can enable SSID broadcasting or disable it and perform other functions. PCs are mostly required to be used where network is huge and keeping and maintaining its integrity and stability is very important. PCs can also be attached to routers for more advance management which routers can not performs. In this modern era every one wants every thing wireless, Wifi belongs to wireless technology family.


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. - there are so many other wireless technologies which have evolved around the time and wifi is now taken for granted and world is now talking about much advanced and enhanced wireless network known to be wimax. 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.


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