Joe, a network engineer, is attempting to install wireless in a large work area. He installs the access point in the middle of the work space. When testing, he notices a -60dB reading on one side of the room and a -92dB reading on the other side. Which of the following is MOST likely the issue?
A. External interference
B. Distance limitations
C. Channel overlap
D. Incorrect antenna type
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I think the answer could be correct as D, if the AP is placed in the center of the room.
They might be needing an Omnidirectional antenna so it can evenly distribute the signal.
https://en.wikipedia.org/wiki/Omnidirectional_antenna#:~:text=In%20radio%20communication%2C%20an%20omnidirectional,to%20zero%20on%20the%20axis.
In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis
The correct answer could be either A or C
A source of Wi-Fi signal problems is interference. Wireless devices feature the ability to transmit and receive on several separate channels, but in many cases, they shift from the factory set to a single default channel. This can mean that several wireless sources in a small area, such as an apartment building, are all competing for signal in the same frequency band. If you encounter unexpectedly weak Wi-Fi signals and detect other networks operating in your immediate area, try switching to different channels to find a less crowded part of the spectrum.