Randy Kendzior, Dell, Inc. September 24, 2004 Wireless Technology Discussion Massachusetts Digital Government Summit

Client Technologists Dell Confidential 2 of 23 Wireless Networks – A Simple Overview WPAN WLAN WWAN Personal space Home, Campus, Hotspots Metros, Countries, Global

Client Technologists Dell Confidential 3 of 23 Current WLAN Technology Comparisons b802.11a802.11b/g802.11a/b/g Maximum Data Rate11 Mbps54 Mbps Frequency Band2.4 GHz5 GHz2.4 GHz5/2.4 GHz Channels312312/3 Typical RangeUp to 300’Up to 180’Up to 300’Up to 180/300’ b CompatibleYesNoYes b – Broadly deployed, lowest cost solution moving to cell phones and handhelds b/g - New mainstream WLAN solution, best for majority of mobile workers a - Provides added capacity in crowded enterprise environments a/b/g – Future-proof for maximum capacity and compatibility

Client Technologists Dell Confidential 4 of Past Security Radio WLAN standards will emphasize throughput, QoS, security & management… WLAN Technology Roadmap QoS Other Wi-Fi b Wi-Fi b g a n WME (eDCF) WME (eDCF) e WEP WPA (TKIP) WPA (TKIP) i (AES) i (AES) 802.1x Cisco CCXv1 Cisco CCXv1 CCXv2 CCXv3 Migration to dual-band Faster data rates with.11n Migration to dual-band Faster data rates with.11n VoIP & streaming support Strong AES encryption Port-based authentication Strong AES encryption Port-based authentication Cisco interoperability Measurements & regulatory Cisco interoperability Measurements & regulatory d h k

Client Technologists Dell Confidential 5 of 23 WLAN Market Overview Wireless technologies, characterized according to range and mobility, will evolve to higher data rates WLAN market growth will be driven by improved costs, capabilities & usages WLAN standards will address throughput, QoS, security and management Security remains a key perceived barrier to enterprise WLAN adoption WLAN security solutions exist today and will be enhanced in the future WLAN Market Overview

Client Technologists Dell Confidential 6 of 23 Wireless technologies, categorized by mobility and range, will continue to evolve to higher data rates... Wireless Technology Roadmap WLAN Wi-Fi b Wi-Fi b g a n 11 Mbps 100+ Mbps 54 Mbps Increasing Range and Mobility  WWAN GSM GPRS GSM GPRS 115 kbps WCDMA (UMTS) WCDMA (UMTS) EDGE HSPDA 384 kbps 2 Mbps CDMA xRTT CDMA xRTT 1xEV-DV 1xEV-DO 144 kbps2.4 Mbps 3.1 Mbps Past WPAN Bluetooth 1.1 Bluetooth 1.1 Bluetooth 1.2 Bluetooth 1.2 Bluetooth EDR Bluetooth EDR Zigbee Zigbee UWB a UWB a Zigbee ’ Zigbee ’ 3 Mbps 250 Kbps 1 Mbps 100 Mbps+ NG UWB 480 Mbps Bluetooth 2.x Bluetooth 2.x 1 Mbps BWA WiMAX a WiMAX a e MobileFi MobileFi Mbps

Client Technologists Dell Confidential 7 of 23 Wireless Application Landscape Short Range Long Range Low Data RateHigh Data RateVery high Data Rate PAN LAN WAN Text, Graphics, Internet, Compressed Audio Data, Streaming Video, Internet, Hi-Fi Audio Multi-channel Video & HDTV Wireless technologies, categorized by mobility and range, will continue to evolve to higher data rates... UWB MMDS/LMDS b/g g/a GSM/CDMA GPRS/3G Bluetooth 1.1 Zigbee Bluetooth 2 (MR) n e MAN a

Client Technologists Dell Confidential 8 of 23 My_Network My_Data Wireless will be pervasive, enabling seamless network and device connectivity… Wireless Everywhere and Anywhere WPAN WWAN BWA WLAN GPS RFID  Airport  Customer  Office  Home

Client Technologists Dell Confidential 9 of 23 UWB Usage Scenarios Digital Home Broadband UWB LAN/WLAN Network UWB UWB usage models evolving for Cable replacement in the Digital Home

Client Technologists Dell Confidential 10 of 23 RADIUS UWB a Acronym Anxiety WiMAX Bluetooth WEP n g i AES TKIP Wi-Fi QoS Zigbee CCX EAP b UWB GPRS CDMA e h PEAP

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