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802.11a OFDM
a) Orthogonal frequency-division multiplexing utilizing a 5-GHz band
b) Same as FDM except all sub bands are used by only one source at a given time
c) Security increased by assigning sub bands randomly
d) Data rates of 18 Mbps and 54 Mbps
e) Often used in power-line networking
#question..
Fragmentation - Wireless environment is very noisy - Corrupt frames must be retransmitted - Large frames must be divided into smaller ones to increase efficiency
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what the domain name of 128.252.160.2000
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