Page 178 - CISSO_Prep_ Guide

networks. These are the most popular wireless standards in use.
Several more are in development.
• 802.11a - this standard operates in the 5 GHz band at
speeds up to 54 mb/s.
• 802.11b - this standard operates in the 2.4 GHz band at
speeds up to 11 mb/s
• 802.11g - this standard operates in the 2.4 GHz band at
speeds up to 54 mb/s
• 802.11n - this standard introduced the concept of
Multiple Input/ Multiple Output (MIMO) in the 2.4 GHz
band with speeds up to 600 mb/s
• 802.11ac - this standard operates in both the 2.4 GHz
band at speeds up to 450 mb/s and the 5 GHz band at
speeds up to 1300mb/s

802.15 - Bluetooth - short-range (10 meters/30 feet)
communications between paired devices.

802.16 - WiMax - wireless metropolitan area networks that
permit wireless access between cells within a metropolitan area.

RFID - radio frequency identifier is a short-range wireless
communications technology that can be used to track items
implanted with RFID chips, often used in inventory
management and passports.

Optical wireless - technology based on optical communications
using a laser between two locations with a clear line of sight.
Very good speeds without the requirement for licensing fees that
are required with a microwave.