In WLAN, the AP has been working in a half-duplex state.
Answer(s): A
In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15 to 5.825 GHz, and the data transmission rate reaches 11 Mbps.
Answer(s): B
Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-band mode of operation (supporting two operating bands of 2.4 GHz and 5 GHz).
802.11b supports () channels in the United States, where one channel does not overlap?
What is the maximum rate supported by the original 802.11 protocol?
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