Networks

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Point-to-point (mesh)

Ring

Ring (cont'd)

Ring (cont'd)

Bus

Competing needs and solutions

Token ring

Ethernet

Asynchronous Transfer Mode (ATM)

Real world

Real world (cont'd)

Real world (cont'd)

Real world (cont'd)

Real world (cont'd)

Wireless

Wireless (cont'd)

18 of 32

Invisible computing

GPS

Medical applications

RFID

RFID (cont'd)

Medical applications

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Medical applications (cont'd)

Protocols

WAP - Wireless Application Protocol, for `third-generation' mobile telephony. Designed to hand off connections seamlessly as user moves.
Bluetooth. Inexpensive, relatively slow at < 1 Mbit/s, range 10 m. Based on IEEE 802.11 standard, uses unlicensed 2.4-GHz band. Emphasis on ‘dynamically handling mobile units of various kinds'’.
Wi-Fi. Up to 11 Mbits/s. Based on IEEE 802.11b standard, uses unlicensed 2.4-GHz band. Some say it's a good thing that if people put their base stations in their windows, then anyone nearby could use them to access the Internet; this might also become a security problem.

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Last modified: Tue, 2007 Mar 20 17:56:43

Slide show generated from networks.html by Weasel 2007 Mar 20