To transmit very rapidly in RADIO,you need ________.
A) single-frequency transmission
B) single-mode transmission
C) multimode transmission
D) wide bandwidth
E) narrow bandwidth
Correct Answer:
Verified
Q23: In 802.11,channel bandwidth usually is _.
A)20 GHz
B)40
Q24: If a radio transmission is easily blocked
Q25: 802.11a supports _ nonoverlapping channels.
A)1
B)3
C)7
D)More than 10
Q28: Which unlicensed band provides greater propagation distance
Q29: The 2.4 GHz band supports _ nonoverlapping
Q30: Channels with wide bandwidths are called _
Q31: The frequency range from 500 megahertz to
Q32: Spread spectrum transmission is used in WLANs
Q40: WLANs normally use _.
A)licensed bands
B)unlicensed bands
Q46: What happens if two nearby access points
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