a mechanism that allows an electronic device
to exchange data wirelessly over a computer
"Wi-Fi" is a trademark of the Wi-Fi Alliance and
the brand name for products using the IEEE
802.11 family of standards.
A device enabled with Wi-Fi can connect to a
network resource such as the Internet via
a wireless network access point.
COMPONENTS OF WI-FI
It is a two-way radio communication.
It consists of : computer's wireless adapter,
a wireless router and
BUILDIING A WI-FI
A Wi-Fi hotspot is created by installing an
access point to any internet connection.
An access point acts as a base station.
When Wi-Fi enabled device encounters a
hotspot the device can then connect to
that network wirelessly.
THE WI-FI TECHNOLOGY
Wi-Fi networks use radio technologies to
transmit & receive data at high speed.
IEEE set of standards are :
AP based topology
Point-to-multipoint bridge topology
TO FIX A PROBLEM WITH YOUR WI-FI
Step 1 – Reset the Router
Step 2 – Check the Password
Step 3 – Try a Direct
Connection to the
Step 4 – Check Your Wireless
Step 5 – Check Your Wireless
WEP (Wired Equivalency Privacy) standard was
intended to make wireless network as secure
as wired networks.
The common key lengths are currently 128 and
WPA (Wi-Fi Protected Access) is an early
version of the 802.11i security standard that
was developed by the Wi-Fi Alliance to replace
Degradation in performance
High power consumption
Large corporations & campuses
Wireless ISP (WISP)