While seeking the source of interference on channel 11 in your 802.11n WLAN running within 2.4 GHz, you notice a signal in the spectrum analyzer real time FFT
display. The signal is characterized with the
greatest strength utilizing only 1-2 megahertz of bandwidth and it does not use significantly more bandwidth until it has weakened by roughly 20 dB. At approximately
-70 dB, it spreads across as much as 35 megahertz of bandwidth.
What kind of signal is described?
A.
A high-power, narrowband signal
B.
A 2.4 GHz WLAN transmission using transmit beam forming
C.
An HT-OFDM access point
D.
A frequency hopping wireless device in discovery mode
E.
A deauthentication flood from a WIPS blocking an AP
F.
A high-power ultra wideband (UWB) Bluetooth transmission