Wi-Fi refers to the family of IEEE 802.11 standards., A Service Set Identifier is the network name of wireless routers., 802.11 networks use CSMA/CA to avoid packet collisions, Frequency is the audio range in which technology broadcasts., Channels are subdivisions within a frequency, Computers modulate digital information into signals that can be transmitted over the air., Frequency Hopping Spread Spectrum hops a transmission over a range of predetermined frequencies., Direct Sequence Spread Spectrum spreads a transmission over a larger frequency band., Orthogonal Frequency Division Multiplexing breaks data into sub-signals., 802.11a and 802.11b devices aren't available today., 802.11n defines speeds up to 600 Mbps and is downward compatible with previous standards., Dynamic Frequency Selection automatically shifts the frequency to avoid interference., 802.11ac operates at 5GHz and claims to provide wireless speeds of 16Gbps or higher., Channel bonding joins two channels to double the physical data rate., Beamforming allows for range increases by aiming the wireless signal at the client., 802.11ax in the newest generation of wireless that utilizes 2.4GHz and 5GHz., OFDMA is a modulation technique that can handle communications with several clients at once., Basic Service Set coloring reduces the problems of co-channel interference., Wireless Access Points connect devices in wireless networks., Bluetooth currently offers high speed and low energy transfer rates., Slot Availability Masking detects and prevents interference for Bluetooth devices., Long-range fixed wireless uses pairs of directional antennas., Everyone is free to use unlicensed frequencies., The government grants the use of licensed frequencies., Wireless power transfer transmits energy without cord conductors., RFID has three components - tag, reader and antenna., Near Field Communication is very short-range wireless connectivity technology., Infrared waves require line-of-sight to function.,

Understanding Wireless Networking Technologies (220-1101, Unit 7.1)

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