Overview

A typical computer network uses twisted pair and fiber optic cabling

A more cost effective networking media

Benefits of Wireless networks

• cost effective media

• less setup as there are no physical cables for eac endpoint

• scalability

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Physical Layer Technologies

DSSS (802.11 b)

FHSS

OFDM (802.11 a/g/n)

infrared

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Wireless standard names

Wifi 1 - 802.11b

Wifi 2 - 802.11a

Wifi 3 - 802.11g

Wifi 4 - 802.11n

Wifi 5 - 802.11ac

Wifi 6 - 802.11ax

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Wireless Network Management Protocols

Authentication

Association

Data Delivery

Privacy

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SSID

Stands for Service Set ID

basically the name of the wireless network

(SSIDs are used to identify what wireless data traffic is allowed to connect to the network)

The Access Point uses the SSID to determine if the client is to become a member of the wireless network