Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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A circuit has 2 cables with 4 dB loss each and an amplifier with a gain of 12 dB. It has one antenna with a gain of 10dBi and the attenuator has a loss of 5 dB. What is the effective gain or loss in the circuit?
  1. 35 dB gain
  2. 9 dB gain
  3. 9 dB loss
  4. 35 dB loss
Explanation
Answer - B - The circuit has an effective gain of 9 dB.

Key Takeaway: The effective gain or loss in a circuit is additive in nature. The total loss at the cable is (-8 dB). Adding all gains and losses in the circuit ((-8 dB) + 12 dB + 10dBi + (-5 dB)) yields an effective gain of 9 dB.
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