A transmitter is configured to use a power level of 17 mW. One day it is reconfigured to transmit at a new power level of 34 mW. How much has the power level increased, in dB?

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A transmitter is configured to use a power level of 17 mW. One day it is reconfigured to transmit at a new power level of 34 mW. How much has the power level increased, in dB?

0 dB
2 dB
3 dB
17 dB
None of these answers are correct; you need a calculator to figure this out.

Explanation: At first glance, 17 mW and 34 mW might seem like odd numbers to work with. Notice that if you double 17, you get 34. The second handy dB fact says that doubling a power level will increase the dB value by 3.

Exam with this question: CCNPv8 ENCOR Chapter 17: Do I Know This Already? Quiz Answers