2. OUTLINES
What is Wi-Fi ?
Hotspots
How a Wi-Fi Network Works
Advantages and Limitations of Wi-Fi
3. What is Wi-Fi?
WiFi ,short for Wireless Fidelity, is the term used to
describe high speed wireless connection over short
distances between mobile computing devices such as
laptops and the internet.
Allows you to access the Internet while on the move ; you
can remain online while moving from one area to another,
without a disconnection or loss in coverage.
4. How a Wi-Fi Network Works?
• Basic concept is same as Walkie talkies.
• A Wi-Fi hotspot is created by installing an access point to an
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.
• A single access point can support up to 30 users and can
function within a range of 100 – 150 feet indoors and up to 300
feet outdoors.
• Many access points can be connected to each other via Ethernet
cables to create a single large network.
5. HOTSPOT
What is Hotspot ?
A Hotspot is any location where Wi-Fi network access is
made publicly available.
Hotspots are equipped with a Broadband Internet
connection, and one or more Access Points that allow
users to access the Internet wirelessly.
Hotspots can be setup in any public location that can
support an Internet connection. All the locations discussed
below are examples of Hotspots.
6. Wi-Fi Hotspot Locations
Airports
Hotels & Resorts
Restaurants
Coffee Shops
Bookstores
Shopping Malls
There are several online services allow you find hotspot
locations.
8. Advantages of Wi-Fi
• Mobility
• Ease of Installation
• Flexibility
• Cost
• Reliability
• Security
• Use unlicensed part of the radio spectrum
• Roaming
• Speed
9. Limitations of Wi-Fi
Speed – Slower than cable
Range – Affected by various medium
Travels best through open space
Reduced by walls, glass, water, etc
High power consumption
Data security risks
