Metal objects have a greater attenuation effect on wireless signals, so APs or antennas should not be placed behind metal ceilings, etc.

Question

Options

• ATrue
• BFalse

• A
  85% (23)
• B
  15% (4)

Explanation

Option A is correct because metal is highly conductive and reflects or absorbs radio frequency (RF) energy rather than allowing it to pass through, making it one of the most disruptive materials for wireless signal propagation. Placing an access point or antenna behind a metal ceiling or wall severely reduces signal strength on the other side, limiting coverage and throughput for users. Option B is incorrect because there is no scenario where metal fails to attenuate wireless signals - this is a fundamental property of how RF energy interacts with conductive materials.

Memory tip: Think of metal as a "mirror" for RF signals. Just as a mirror blocks your line of sight through it, a metal surface blocks or bounces wireless signals rather than letting them pass, so anything placed behind it is effectively shielded from the signal.

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