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Loss and gain of a signal. A signal starts at point A. As it travels to point B, it loses 8 dB. At point B,

Loss and gain of a signal. A signal starts at point A. As it travels to point B, it loses 8 dB. At point B, the signal is boosted by 10 dB.As the signal travels to point C, it loses 7 dB. At point C, the signal is boosted by 10 dB. As the signal travels to point D, it loses 8 dB.

- What is the dB unit?

- What is the dB strength of the signal at point D?

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