With regard to radio frequency tuning, which of the following adjustments are mainly used to ensure that the AP works in the best state? (Multiple choice)

Question

Options

• AAP channel adjustment
• BAP SNR adjustment
• CAP power adjustment
• DDynamic EDCA parameter adjustment

• A
  82% (32)
• B
  13% (5)
• D
  5% (2)

Explanation

Channel (A) and transmit power (C) are the two direct, physical RF-layer controls that determine where an AP operates in the spectrum and how far its signal reaches - these are the core levers of RF tuning used in systems like Huawei's WLAN RRM or Cisco's RRM to eliminate interference, balance load, and optimize coverage.

Why the distractors are wrong:

• B (SNR adjustment): SNR is a measurement (signal vs. noise ratio), not a tunable parameter. You cannot directly "adjust" SNR - it is an outcome that improves as a result of adjusting channel and power, not a control knob itself.
• D (Dynamic EDCA parameters): EDCA is a QoS mechanism operating at the MAC layer that prioritizes traffic categories (voice, video, etc.). It optimizes how traffic shares the medium, not the RF characteristics of the channel - it belongs to QoS tuning, not RF tuning.

Memory tip: Think of RF tuning as having two physical dials on a radio - which frequency to use (channel) and how loud to broadcast (power). SNR is the meter showing how well those dials are set, and EDCA is a traffic cop managing who goes first - neither is a dial you turn during RF tuning.

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