This document provides an overview of Wi-Fi including its definition, origins in 1991, how it works by transmitting radio signals, key elements like access points and Wi-Fi cards, advantages like wireless connectivity without wires, limitations such as limited range and security risks, different network topologies, statistics on Wi-Fi usage, and recent news about expanding free public Wi-Fi access. It also includes an introduction, table of contents, and sections covering various aspects of Wi-Fi with details in bullet points.

1. Welcome to
Our
Presentation

2. Name ID Intake Section
Ishtiak Reza 12132101443 30 10
Sharmin Rahman Santa 12131101104 29 03
Presetting by:

3. Topic:

4. 1. What is Wi-Fi?
2. When Wi-Fi Originated?
3. How Wi-Fi Works?
4. Elements of Wi-Fi Network.
5. Advantages of Wi-Fi.
6. Limitations of Wi-Fi.
7. Wi-Fi Network Topologies.
8. Some Wi-Fi Facts.
9. Wi-Fi Statistics
10. Latest Wi-Fi News.
11. Thank You Everyone.
Table of content:

5. What is Wi-Fi?
• Wi-Fi means wireless Fidelity is a
wireless technology that uses radio
frequency to transmit data through
the air.

6. When Wi-Fi Originated?
• Back in 1991 Wi-Fi was invented by
NCR corporation in Netherlands.
• The first wireless products were brought
on the market under the name Wave
LAN with speeds of 1/2 Mbps.
• Vic Hayes who is the inventor of Wi-Fi
has been named father of Wi-Fi.

7. How Wi-Fi Works?
• 1. The wireless adapter of the device (PC,
Laptop,cell,and other devices supporting the
feature) translate digital data to radio signals
• 2 .signals are then transmitted over the
antenna.
• 3. A device called ROUTER receives the
signals and records them.

8. Elements Of Wi-Fi Network
• Access Point (AP)- The AP is a wireless
LAN transceiver or “base station” that can
connect one or many wireless devices in
the same time to the internet.
• Wi-Fi Cards(Adapters)- They accept the
wireless signal and relay information.

9. Advantage of Wi-Fi
• No Wires-A truly wireless networking.
• No waiting-Fast, easy deployments.
• No Worries- A wireless networking
system that is secure, easy to manage
and built to grow with you.
• Easy of installation.

10. Limitations of Wi-Fi.
• Limited rang
• Data security risks: A huge
challenge for Wi-Fi network.
• High power consumption: Making
battery life and heat a concern.

11. Wi-Fi Network Topologies
• Access point-based topologies.
• Peer-to-peer topology.
• Point-to-multipoint bridge topology.

12. Some Wi-Fi Facts.
• 86% of tablets require a Wi-Fi connection to
access the internet.
• 75% of Smartphone owners use Wi-Fi on
their devices.
• 90% of all iPods are used as Wi-Fi devices,
compared of 64% for 4G enabled and 55% of
3G enabled IPods.

13. Wi-Fi Statistics

14. Latest Wi-Fi News
• Free Wi-Fi facility in moving train.
• Bangalore first Indian City to get free
Wi-Fi hotspots.
• Google offers free Wi-Fi at O-zone
not spots in India