Topic of wi-fi Topic of wi-fi

Wi-fiWi-fi

What is wi-fi?What is wi-fi?

Wi-Fi, which stands for Wi-Fi, which stands for wireless fidelitywireless fidelity, in a play , in a play on the older term on the older term Hi-FiHi-Fi, is a wireless networking , is a wireless networking technology used across the globe. technology used across the globe.

Wi-Fi refers to any system that uses the 802.11 Wi-Fi refers to any system that uses the 802.11 standard, which was developed by the Institute standard, which was developed by the Institute of Electrical and Electronics Engineers (IEEE) of Electrical and Electronics Engineers (IEEE) and released in 1997. and released in 1997.

The term The term Wi-FiWi-Fi, which is alternatively spelled , which is alternatively spelled WiFi, Wi-fi, Wifi, or wifi, was pushed by the Wi-Fi WiFi, Wi-fi, Wifi, or wifi, was pushed by the Wi-Fi Alliance, a trade group that pioneered Alliance, a trade group that pioneered commercialization of the technology.commercialization of the technology.

Definition of wi-fiDefinition of wi-fi

Definition of Definition of Wifi:Wifi: a local area network that a local area network that uses high frequency radio signals to uses high frequency radio signals to transmit and receive data over distances transmit and receive data over distances of a few hundred feet; uses ethernet of a few hundred feet; uses ethernet protocol protocol

Advantages of wi-fiAdvantages of wi-fi

It allows local area networks (LANs) to be It allows local area networks (LANs) to be setup with cabling. The can reduce setup with cabling. The can reduce associated costs of network connection associated costs of network connection and expansions.and expansions.

Places where cables cannot be run, such Places where cables cannot be run, such as outdoor areas and historical buildings as outdoor areas and historical buildings can use wireless LANs.can use wireless LANs.

WiFi products are extensively available in WiFi products are extensively available in the market. the market.

• 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.

Dis-advantage of wi-fiDis-advantage of wi-fi

WiFi uses the unlicensed 2.4GHz spectrum, which often crowded WiFi uses the unlicensed 2.4GHz spectrum, which often crowded with other devices such as Bluetooth, microwave ovens, cordless with other devices such as Bluetooth, microwave ovens, cordless phones, or video sender devices, and among many others. This phones, or video sender devices, and among many others. This may cause degradation in performance.may cause degradation in performance.

WiFi networks have limited range. A typical WiFi home router might WiFi networks have limited range. A typical WiFi home router might have a range of 45m (150ft) indoors and 90m (300ft) outdoors. have a range of 45m (150ft) indoors and 90m (300ft) outdoors. Ranges may also vary as WiFi is no exception to the physics of Ranges may also vary as WiFi is no exception to the physics of radio wave propagation with frequency band.radio wave propagation with frequency band.

The most common wireless encryption standard, wired equivalent The most common wireless encryption standard, wired equivalent privacy or WEP has been shown to be breakable even when it has privacy or WEP has been shown to be breakable even when it has been correctly configured.been correctly configured.

Access points could be used to steal personal and confidential Access points could be used to steal personal and confidential information transmitted from WiFi consumers.information transmitted from WiFi consumers.

How to use wi-fiHow to use wi-fi Step 1Step 1 It is necessary to understand Wi-Fi Certified Devices or Equipment. The Wi-It is necessary to understand Wi-Fi Certified Devices or Equipment. The Wi-

Fi Alliance-produced devices assure that users and customers can easily 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 access Wi-Fi networks. Look for the Wi-Fi logo to determine Wi-Fi certified products.products.

Step 2Step 2 Make sure that an Internet connection is available. Check Internet access, Make sure that an Internet connection is available. Check Internet access,

settings, and the connection to the modem.settings, and the connection to the modem.

Step 3Step 3 Connect the router to the modem. The diverse brands and models of routers Connect the router to the modem. The diverse brands and models of routers

available have different methods of connecting to the modem. Although 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 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-the User’s manual. Make sure all connectors are in place and follow trouble-shooting directions for optimum performance.shooting directions for optimum performance.

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.

Thank youThank you

By vidhi panchal By vidhi panchal Sy bba (itm)Sy bba (itm)Roll no : 56Roll no : 56