wireless lan ppt for week 2

8/2/2019 Wireless LAN PPT for Week 2

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Wireless LAN

By: Jennifer Lawson

Class: Networking 175Date: 01/21/2012


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What is a Wireless LAN

A Wireless local area network (WLAN)

Doesn't rely on wired Ethernet connections

Data transfer speeds ranging from 1 to54Mbps

Signal can broadcast to cover an area ranging

in size from small office to large campuses. WLAN access points provide access within a

radius of 65 to 300 feet


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What is a Wireless LAN contd

Home or business WLAN employs one or two

access points to broadcast signal around a

100- to 200- foot radius

Most Wi-Fi of home and office WLANs now

adhere to the new 802.11n standards

Many now adhere to the Wi-Fi Protected

Access 2 (WPA2) standard.


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WLAN Pros

802.11a

Faster data transfer rates up

to 54Mbps

Supports moresimultaneous connections

Less susceptible to

interference

812.11b

Better at penetrating

physical barriers

Longest range (70-150 feet) Hardware is usually less

expensive


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WLAN Pros contd

802.11g

Faster data transfer rates

(up to 54 Mbps)

Better Range than 802.11b(65-120 feet)

802.11n

The 802.11n standard was

recently ratified by the

Institute of Electrical andElectronics Engineers (IEEE)

It is expected to allow data

transfer rates up to 600

Mbps and may offer largerranges


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WLANs Cons

802.11a

Short range (60-100 feet)

Less able to penetrate

physical barriers

812.11b

Slower data transfer rates

(up to 11Mbps)

Doesnt support as manysimultaneous connections

More susceptible to

interference


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WLANs Cons contd

802.11g

More susceptible to

interference

802.11n

No listed cons


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Equipment needed for Wireless LAN

Any computer connecting to a wireless LAN

require a wireless network adapter

This is a hardware component common to

most modern laptops.

Can be installed in a desktop computer or

laptop, either internally or externally via a USB

connection


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Equipment needed for Wireless LAN

pg.2

A wireless switch is used for communication betweenmultiple computers on a wireless LAN

Commonly used to connect any wireless network of 3or more computers or wireless electronics

A wireless router/switch is commonly called a wirelessrouter, is used for a wireless LAN that connectscomputers to a shared Internet connection.

The antenna tunes into a wireless router some what

like a radio station which all the computers on thenetwork connect to so they can see each other.

Provides a kind of shared gateway to the Internet.


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Equipment needed for a Wireless LAN

pg.3

A repeater, a common piece of wireless

network equipment.

This is a wireless signal amplifier that extends

the distance of a wireless LAN

Makes it much easier to expand a network for

a larger area later on


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Equipment needed for a Wireless LAN

pg.4

Ad-Hoc network is a way to set up a smallwireless LAN between only 2 computers usingonly the wireless network adapters.

Convenient way to network 2 computers. A wireless modem can be used in place of a

router by tuning into the adapters by

physically attaching to the network butreceives wireless connections from anadapter.


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Sources:

http://www.ehow.com/facts_5951015_wirele

ss-lan-adapters_.html

http://kb.iu.edu/data/aick.html

http://www.ehow.com/facts_5904229_equip

ment-needed-wireless-lan_.html
http://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://kb.iu.edu/data/aick.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://www.ehow.com/facts_5904229_equipment-needed-wireless-lan_.htmlhttp://kb.iu.edu/data/aick.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.htmlhttp://www.ehow.com/facts_5951015_wireless-lan-adapters_.html

wireless lan ppt for week 2

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