Sandy, a technician, is asked to install a wireless network for two neighboring buildings. Which of the
following wireless signals will MOST easily penetrate obstructions, such as walls and doors?
A.
802.11a
B.
802.11g
C.
802.11n 5GHz
D.
802.11n 5GHz wide band
The N band can function in the 5GHZ so quite confused why is b the right answer
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5GHz doesn’t penetrate walls/obstructions as easily as 2.4GHz. 802.11n can operate at 2.4 as well, but n using 2.4 isn’t an option here.
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When it comes to radio waves, think of it as the energy going back and forth (cycling/Hz) steals the energy from it pushing forward. If you have a 1mW fixed output, that 1mW can’t push as hard through obstructions if it’s using more of its energy cycling back and forth. 160 meter ham radio signal (1.8-2 Hertz) can go around the globe on just a few watts.
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