The IEEE 802.11a/n/ac physical layer technologies utilize the 5 GHz frequency band. What is true of the channels in this frequency spectrum?
14 channels are available worldwide.
11 channels are available worldwide.
Regulatory domains worldwide require DFS and TPC in all these channels.
DFS may be required in some regulatory domains on some channels.
802.11 channels are separated by 5 Mhz
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