What Is the Difference Between WiFi and Wireless Internet?

Wireless Internet is just one of the services that WiFi optionally supports.The WiFi signal cannot travel long distances without loss of integrity, and it is therefore used for Local Area Networks. In the home, a wireless LAN might include a personal desktop system and laptop,

A WiFi network is very easy to set up. The main computer acts as a server with a wireless network interface card 

What Is a WLAN Modem?

A wireless local area network modem is a radio frequency device that allows local computers to communicate with each other wirelessly.

A traditional WLAN modem sits on a desktop to serve networking connectivity to the home, commercial building, or general locale.

A WLAN modem comes with a built-in router to direct traffic on the local network.In order to communicate with a WLAN modem, computers require a wireless network card. The network card does not include a router, as it is only designed to connect a single computer to the network..

Campus-wide Wi-Fi:

Many traditional college campuses in the United States provide at least partial wireless Wi-Fi Internet coverage. Carnegie Mellon University built the first campus-wide wireless Internet network, called Wireless Andrew, at its Pittsburgh campus in 1993 before Wi-Fi branding originated.

The Far Eastern University in Manila is the first university in the Philippines to implement a campus-wide Wi-Fi coverage for its students, faculty, and staff.

City-wide Wi-Fi:

In the early 2000s, many cities around the world announced plans to construct city-wide Wi-Fi networks. There are many successful examples; in 2004, Mysore became India's first Wi-Fi-enabled city and second in the world after Jerusalem.

In May 2010, London, UK, Mayor Boris Johnson pledged to have London-wide Wi-Fi by 2012.Several boroughs including Westminster and Islington already have extensive outdoor Wi-Fi coverage.

Wi-Fi devices:

A device that can use Wi-Fi  can connect to a network resource such as the Internet via a wireless network access point. 

  An optional feature added in 2007, called Wi-Fi Protected Setup (WPS), had a serious flaw that allowed an attacker to recover the router's password.The Wi-Fi Alliance has since updated its test plan and certification program to ensure all newly certified devices resist attacks. The use of WPS greatly reduces the time required to gain access by the use of so called "brute force" attacks.

Wi-Fi:

 The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN) products that are based on the Institute of Electrical and Electronics Engineers''. However, since most modern WLANs are based on these standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". Only Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing successfully may use the "Wi-Fi CERTIFIED" trademark.

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