A WI-FI ROUTER

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INTRODUCTION:

INTRODUCTION Wireless technology is an alternative to wired technology,which is commonly used for connecting devices in wireless modes. Wi-fi Network connect computers to each other,to the internet and to the wired network. WI-FI(Wireless Fidelity) is a generic term that refers to the IEEE 802.11 communications standard for Wireless Local Area Networkig

The WI-FI TECHNOLOGY:

The WI-FI TECHNOLOGY WI-FI Networks uses Radio Technologies to transmit &receive data at a high speed : IEEE 802.11b IEEE 802.11a IEEE 802.11g

OPERATING MODES:

OPERATING MODES

IEEE 802.11b:

IEEE 802.11b Appear in the late 1999 Operates at 2.4 GHz radio spectrum 11 Mbps (therotical speed)-within 30 m Range 4.6Mbps (actual speed) 100-150 feet range Most Popular,Least Expensive Interference from mobile phones and bluetooth devices which can reduce the transmission speed

WI-FI OPERATION:

WI-FI OPERATION

How a WI-FI network works ?:

How a WI-FI network works ? Basic concept it is same as walkie talkies. A WI-FI hot spot is created by installing an access point to an internet connection. An access point acts as a base station. When a 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 in the range of 100 – 150 feet indoors and 300 feet outdoors. Many access points can be connected to each other via ethernet cables to create a single large network.

WI-FI CONFIGURATIONS:

WI-FI CONFIGURATIONS

A CELLULAR WI-FI:

A CELLULAR WI-FI

A COMMON EXAMPLE OF WI-FI:

A COMMON EXAMPLE OF WI-FI

WI-FI APPLICATIONS:

WI-FI APPLICATIONS Home. Small Business. Large Corporations & Campuses Health Care. Wireless ISP. Travellers

A WI-FI COMMUNICATION:

A WI-FI COMMUNICATION

TOPOLOGIES:

TOPOLOGIES

AP-BASED TOPOLOGY:

AP-BASED TOPOLOGY The client communication through access point. It connects the PC’s by an AP. It consist of a2 or Base Stations. It includes 10 - 15% overlap to allow roaming

PEER TO PEER TOPOLOGY:

PEER TO PEER TOPOLOGY - Access point is not required. Client devices within cell can communicate directly with each other. It is useful for setting up of a wireless set quickly and easily.

POINT- TO- MULTIPOINT BRIDGE TOPOLOGY:

POINT- TO- MULTIPOINT BRIDGE TOPOLOGY Used to connect a LAN in one building to a LAN’s in other buildings even if the buildings are miles apart. Range varies based on the type of wireless bridge and antenna used as well as the environmental conditions.

WIRELESS FIDELITY:

WIRELESS FIDELITY MOBILE Widely available in public venues. Relatively inexpensive. Easy to set up a network. User friendly software. Security features. Global set of standards.

WIRELESS DO’S & DON’Ts:

WIRELESS DO’S & DON’Ts DO Use a virtual private network (VPN) connection whenever possible Look for websites that offer secure connections. Look for wireless networks that use WI-FI protected access. DON’T Connect to just any public WI-FI network you find. Connect to “ad-hoc”or “peer-to-peer wireless networks. Send any private information over a public network unless using a secure site

SCOPE OF WI-FI:

SCOPE OF WI-FI In few more years all electronic devices are going to have a built in WI-FI… So once again we welcome to World of Wireless. Many colleges and bussiness have suitable building layouts that can be wireless to built a unwired network. WI-FI is a very cost effective alternative in these environments.

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