Wi-fi is a wireless networking technology that uses radio signals to transmit and receive data over short distances without wires. It uses the 802.11 standard developed by IEEE and allows devices to connect to a local area network (LAN) without cables. Key advantages include lower costs than wired networks and the ability to setup networks in places where cables cannot reach. However, wi-fi performance can degrade due to interference from other devices and it has limited range compared to wired connections. Security is also a concern, though encryption methods provide some protection.

1. Topic of wi-fi

2. Wi-fi

3. What is wi-fi?
 Wi-Fi, which stands for wireless fidelity, in a play
on the older term Hi-Fi, is a wireless networking
technology used across the globe.
 Wi-Fi refers to any system that uses the 802.11
standard, which was developed by the Institute
of Electrical and Electronics Engineers (IEEE)
and released in 1997.
 The term Wi-Fi, which is alternatively spelled
WiFi, Wi-fi, Wifi, or wifi, was pushed by the Wi-Fi
Alliance, a trade group that pioneered
commercialization of the technology.

4. Definition of wi-fi
 Definitionof Wifi: a local area network that
uses high frequency radio signals to
transmit and receive data over distances
of a few hundred feet; uses ethernet
protocol

5. Advantages of wi-fi
 Itallows local area networks (LANs) to be
setup with cabling. The can reduce
associated costs of network connection
and expansions.
 Places where cables cannot be run, such
as outdoor areas and historical buildings
can use wireless LANs.
 WiFi products are extensively available in
the market.

6. • There are different brands of access points and user's
network interfaces are able to inter-operate at a very basic
service level.
•Prices are considerably lower as competition amongst
vendors' increases.
•WiFi networks can support roaming. This allows mobile
users with laptop computer to be able to move from one
access point to another.

7. Dis-advantage of wi-fi
 WiFi uses the unlicensed 2.4GHz spectrum, which often crowded
with other devices such as Bluetooth, microwave ovens, cordless
phones, or video sender devices, and among many others. This
may cause degradation in performance.
 WiFi networks have limited range. A typical WiFi home router might
have a range of 45m (150ft) indoors and 90m (300ft) outdoors.
Ranges may also vary as WiFi is no exception to the physics of
radio wave propagation with frequency band.
 The most common wireless encryption standard, wired equivalent
privacy or WEP has been shown to be breakable even when it has
been correctly configured.
 Access points could be used to steal personal and confidential
information transmitted from WiFi consumers.

8. How to use wi-fi
 Step 1
 It is necessary to understand Wi-Fi Certified Devices or Equipment. The Wi-
Fi Alliance-produced devices assure that users and customers can easily
access Wi-Fi networks. Look for the Wi-Fi logo to determine Wi-Fi certified
products.
 Step 2
 Make sure that an Internet connection is available. Check Internet access,
settings, and the connection to the modem.
 Step 3
 Connect the router to the modem. The diverse brands and models of routers
available have different methods of connecting to the modem. Although
hooking up the router to the modem is easy, try to follow the instructions on
the User’s manual. Make sure all connectors are in place and follow trouble-
shooting directions for optimum performance.

9.  Step 4
 Configure the router to protect the wireless network. Refer to your
User’s manual and configure your wireless network setting by
installing a password. The network may also be protected by turning
off the router’s SSID or server set identifier that tells any device with
Wi-Fi access the existence of the network.
 Step 5
 Connect the Wi-Fi device. Most new Wi-Fi devices are compatible
with each other and have a feature that makes the initial Wi-Fi
access easy. If the Wi-Fi device does not have an easy access
feature, refer to the User’s Manual and follow directions to access
the wireless network through the device.

11. Thank you
 By vidhi panchal
 Sy bba (itm)
 Roll no : 56