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Exam 200-355 topic 1 question 221 discussion

Actual exam question from Cisco's 200-355
Question #: 221
Topic #: 1
[All 200-355 Questions]

What is the equivalent of 26 dBm in milliwatts?

  • A. 4 mW
  • B. 40 mW
  • C. 100 mW
  • D. 400 mW
  • E. 1000 mW
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Suggested Answer: D 🗳️
dBm = log10 (mW)*10
mW =10^(dBm/10)
Samples:
40 dBm=10.00 watts
36 dBm=4.00 watts
30 dBm=1.00 watts
27 dBm=500 milliwatts
26 dBm=400 milliwatts
http://www.h-peters.com/dbmtomw.html
by xtrattitude4u at Aug. 2, 2019, 11:48 p.m.

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xtrattitude4u
5 years, 10 months ago
1mw = 1dbm Work from there. +3dbm = X2mw +10dbm = X10mw
upvoted 3 times
enpuna
5 years, 10 months ago
Correct!
upvoted 1 times
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