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HP Exam HPE6-A85 Topic 1 Question 3 Discussion

Actual exam question for HP's HPE6-A85 exam

Question #: 3
Topic #: 1

[All HPE6-A85 Questions]

When measuring signal strength, dBm is commonly used and 0 dBm corresponds to 1 mW power.

What does -20 dBm correspond to?

A.-1 mW

B.01 mw

C10 mW

D1mW

Show Suggested Answer

Suggested Answer: B

dBm is a unit of power that measures the ratio of a given power level to 1 mW. The formula to convert dBm to mW is: P(mW) = 1mW * 10^(P(dBm)/10). Therefore, -20 dBm corresponds to 0.01 mW, as follows: P(mW) = 1mW * 10^(-20/10) = 0.01 mW Reference: https://www.rapidtables.com/convert/power/dBm_to_mW.html

by Catalina at Oct 06, 2023, 08:35 PM

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