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Exam 200-355 topic 2 question 6 discussion

Actual exam question from Cisco's 200-355
Question #: 6
Topic #: 2
[All 200-355 Questions]

Which two statements are characteristics of RF mathematics? (Choose two.)

  • A. For every gain of 3 db, multiply the transmit power mW by 2
  • B. For every gain of 10 dB, multiply the transmit power mW by 100
  • C. For every loss of 30 dB, multiply the transmit power mW by 1000
  • D. For every loss of 30 dB, decrease the transmit power mW by 1000
  • E. For every gain of 3 dB, divide the transmit power mW by 2
Show Suggested Answer Hide Answer
Suggested Answer: AE 🗳️
Reference:
https://www.tanaza.com/blog/understand-the-power-gain-with-the-rule-of-10s-and-3s/
by EvilS4int at Aug. 27, 2019, 3:19 p.m.

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Tameal
5 years, 3 months ago
A and D for sure!
upvoted 1 times
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Hurkagyurka
5 years, 3 months ago
This is stange: https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/23231-powervalues-23231.html An Increase of: 3 dB Double transmit power 10 dB 10 times the transmit power 30 dB 1000 times the transmit power A Decrease of: 3 dB Half transmit power 10 dB Divides transmit power by 10 30 dB 1000 times the transmit power A is ok, but all other is wrong. why e?
upvoted 1 times
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Coolbreeze
5 years, 7 months ago
A and D are correct. https://www.youtube.com/watch?v=VqoUS-ecw4Y
upvoted 2 times
karora
5 years, 6 months ago
No, D is not correct. You need to divide the power by 1000mw not decrease.
upvoted 1 times
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EvilS4int
5 years, 8 months ago
This is strange?
upvoted 1 times
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