A wireless engineer from your company performed a site survey in an office building where a wireless
network extension was needed. He reports that while performing a Layer 1 sweep near a meeting room full
of people, he detected the RF environment displayed in the exhibit. He is unsure how to interpret what he
recorded to determine its impact on a future Wi-Fi network.

What is true about this RF environment and its potential impact on the WLAN?

A.
The signal affects the entire spectrum and will render the wireless network unusable. It must be located
and removed.

B.
The signal has a low duty cycle and should not be of major impact on the wireless network.

C.
The signal is alternating between peaks (high interference level) and valleys (low interference level).
The network channel design must be built to avoid the affected peak frequencies.

D.
The signal is typical of a high radio card background noise. It shows that the card used for the Layer 1
sweep should be replaced and the Layer 1 sweep re-done.

E.
The Real Time FFT shows a high amplitude, narrowband jammer pulsing across the entire 2.4 GHz
band. This will cause significant, intermittent interference to the WLAN.