CWNA: Certified Wireless Network Administrator v107 — Question 29

You are reporting on the RF environment in your facility. The manager asks you do describe the noise floor noted on the report. Which of the following is the best explanation?

Answer options

• A. The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.
• B. The noise caused by elevators, microwave ovens, and video transmitters.
• C. The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the Intentional signal of your WLAN must exist.
• D. The extra energy radiated by access points and client devices beyond that intended for the signal.

Correct answer: B

Explanation

The correct answer is B, as it accurately describes sources of noise that can interfere with RF signals. Options A, C, and D refer to different aspects of RF energy and interference but do not define the noise floor correctly. The noise floor specifically relates to the baseline noise levels caused by various electronic devices.